Science, New Series, Vol. 107, No. 2766, Jan. 2, 1948


Previous Issue: New Series, Vol. 106, No. 2765, Dec. 26, 1947
Next Issue: New Series, Vol. 107, No. 2767, Jan. 9, 1948


Volume Information (20 pp.)
Front Matter (2 pp.)
Edmund Ware Sinnott: President of AAAS, 1948, p. 1
Lewis Hanford Tiffany

Science and the National Welfare, pp. 2-7
E. U. Condon

News and Notes, pp. 8-14


Technical Papers
Pathogenicity and Isosterism, pp. 15-16
William Seifriz
Control of Hemorrhagic Syndrome and Reduction in X-Irradiation Mortality with a Flavanone, pp. 16-17
Paul E. Rekers; John B. Field
A Rapid Chemical Test for Some Plant Virus Diseases, pp. 17-19
R. C. Lindner
Inhibition of Gastric Ulceration in the Rat by o-Hydroxybenzoic (Salicylic) Acid, pp. 19-20
Frances Pauls; Arne N. Wick; Eaton M. MacKay
Constitution of Gymnosperm Lignin, pp. 20-22
D. M. Ritter; D. E. Pennington; E. D. Olleman; K. A. Wright; T. F. Evans


In the Laboratory
A Method for Making Lantern Slides, p. 23
Hans Neuberger
Glass Trough for Filter Paper Partition Chromatography, pp. 23-24
William H. Longenecker
A Simple Micromethod for Rapid Extraction of Lipids, pp. 24-25
Sidney C. Hsiao
Use of the Freezing-Drying Technique for Study of Vasomotor Activity, p. 25
Calvin A. Richins


Book Reviews
----------------, p. 26
Studies in Hydrodynamics and Structure of Stars and Planets
Jeremi Wasiutynski
Review author[s]: Zdeněk Sekera


Scientific Book Register, p. 26

Previous Issue: New Series, Vol. 106, No. 2765, Dec. 26, 1947
Next Issue: New Series, Vol. 107, No. 2767, Jan. 9, 1948



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Science, New Series, Vol. 107, No. 2767, Jan. 9, 1948


Previous Issue: New Series, Vol. 107, No. 2766, Jan. 2, 1948
Next Issue: New Series, Vol. 107, No. 2768, Jan. 16, 1948


Front Matter (2 pp.)
On the Nomenclature of the Anti-Rh Typing Serums: Report of the Advisory Review Board, pp. 27-31
William B. Castle; Maxwell M. Wintrobe; Laurence H. Snyder

Science Education in Korea, pp. 31-32
Glenn A. Noble


Obituary
Frank Rattray Lillie: 1870-1947, pp. 33-35
Carl R. Moore


News and Notes, pp. 36-38


Technical Papers
Levo-Arterenol, pp. 39-40
M. L. Tainter; B. F. Tullar; F. P. Luduena
Nitrogen Mustards in Fowl Leucosis, pp. 40-42
E. P. Johnson
In vitro Studies of Caries of the Enamel in the Syrian Hamster, pp. 42-44
Valerie Hurst; Harry E. Frisbie; James Nuckolls; Max S. Marshall
A Paradoxical Zone Phenomenon in the Bactericidal Action of Penicillin in vitro, pp. 44-45
Harry Eagle


In the Laboratory
Time-Saving Apparatus for Respiratory Exchange Measurements, pp. 46-47
H. H. Kibler
Comparison of the Determination of the Disintegration Rate of Radiophosphorus by Absolute Beta Counting and Calorimetric Measurement, p. 47
L. R. Zumwalt; C. V. Cannon; G. H. Jenks; W. C. Peacock; L. M. Gunning
The Infrared Emission Spectra of CO2 and H2O Molecules, p. 48
E. K. Plyler


Book Reviews
----------------, p. 49
General Chemistry: An Introduction to Descriptive Chemistry and Modern Chemical Theory
Linus Pauling
Review author[s]: J. S. Coles
----------------, pp. 49-50
Gas Turbines and Jet Propulsion for Aircraft
G. Geoffrey Smith
Review author[s]: Robert S. Ross
----------------, p. 50
Introduction to Electron Optics: The Production, Propagation, and Focusing of Electron Beams
V. E. Cosslett
Review author[s]: Jack Kline


Scientific Book Register, p. 50

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Next Issue: New Series, Vol. 107, No. 2768, Jan. 16, 1948



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Science, New Series, Vol. 107, No. 2768, Jan. 16, 1948


Previous Issue: New Series, Vol. 107, No. 2767, Jan. 9, 1948
Next Issue: New Series, Vol. 107, No. 2769, Jan. 23, 1948


Front Matter (2 pp.)
Drilling on Bikini Atoll, Marshall Islands, pp. 51-55
H. S. Ladd; J. I. Tracey; G. G. Lill


Association Affairs
Officers for 1948, p. 55
Section on Geology and Geography (E), pp. 55-56
George W. White
Section on Medical Sciences, Subsection on Pharmacy (Np), pp. 56-57


News and Notes, pp. 58-62


Technical Papers
Effect of Crude Polyporin on Seed Germination and Root Growth: A Preliminary Study, p. 63
S. R. Bose; A. B. Bose; K. L. Dey
Preflooding Treatments with DDT for Mosquito Control, pp. 63-64
C. C. Deonier; John A. Fluno; E. Nottingham
The Presence of an Alcoholic, Ketonic Derivative of Estrone in Human and Rabbit Blood, pp. 64-66
N. T. Werthessen; C. F. Baker; B. Borci
Increase of Herbicidal Action of Concentrate 40 and Oil Emulsion by 2,4-D, p. 66
José C. Mangual
Importance of the Methoxy Group in Antifibrillatory Compounds, pp. 66-68
Joseph R. DiPalma; Joseph J. Lambert
Inactivation of Nutrients by Heating with Glucose, pp. 68-69
A. R. Patton; E. G. Hill
Effect of Suspended Silt and Other Substances on Rate of Feeding of Oysters, pp. 69-70
Victor L. Loosanoff; Frances D. Tommers


In the Laboratory
On the Use of the Campbell-Pressman Lyophilizing Apparatus for Urinary Extractives, p. 71
Herbert S. Strickler; C. Boyd Shaffer
In vivo Geiger-Müller Gamma-Ray Counter for Radioisotope Distribution Studies, pp. 71-73
Nello Pace; Robert Loevinger; Enrique Strajman


Book Reviews
----------------, p. 73
College Physics: Mechanics, Heat and Sound
Francis Weston Sears; Mark W. Zemansky
Review author[s]: William A. Nierenberg
----------------, p. 74
Organic Analytical Reagents
Frank J. Welcher
Review author[s]: John H. Yoe
----------------, p. 74
A Concise Comparative Anatomy
William Henry Atwood
Review author[s]: Thomas R. Forbes
----------------, p. 74
Die genauen Methoden der astronomisch-geographischen Ortsbestimmung
Th. Niethammer
Review author[s]: Charles H. Smiley
----------------, pp. 74-75
Radar System Engineering
Louis N. Ridenour
Review author[s]: W. D. Hershberger
----------------, pp. 75-76
Foundations of Algebraic Geometry
André Weil
Review author[s]: W. V. D. Hodge
----------------, p. 76
Probit Analysis: A Statistical Treatment of the Sigmoid Response Curve
D. J. Finney
Review author[s]: F. M. Wadley


Scientific Book Register, p. 76

Previous Issue: New Series, Vol. 107, No. 2767, Jan. 9, 1948
Next Issue: New Series, Vol. 107, No. 2769, Jan. 23, 1948



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Science, New Series, Vol. 107, No. 2769, Jan. 23, 1948


Previous Issue: New Series, Vol. 107, No. 2768, Jan. 16, 1948
Next Issue: New Series, Vol. 107, No. 2770, Jan. 30, 1948


Front Matter (2 pp.)
The Role of Science in Our Unique Society, pp. 77-83
James B. Conant


Association Affairs
Section on Education (Q), p. 84
D. A. Worcester
Symposium on Photosynthesis (Section C), pp. 84-85
Farrington Daniels


News and Notes, pp. 85-89


Technical Papers
Lipodieresis in Liver Tissue of Depancreatized Dogs, pp. 90-91
Cesare Lombroso; Stefano Bocchiotti
Aspects of the Biologic Decay Periods of Sodium in Normal and Diseased Man, pp. 91-92
George Burch; Sam Threefoot; Paul Reaser
Isolation from Wild Bird Mites (Liponyssus sylviarum) of a Virus or Mixture of Viruses from Which St. Louis and Western Equine Encephalitis Viruses Have Been Obtained, pp. 92-93
W. McD. Hammon; W. C. Reeves; R. Cunha; C. Espana; G. Sather
Periconia circinata, the Cause of Milo Disease, pp. 93-94
R. W. Leukel; A. G. Johnson
Nature and Spatial Relationship of the Prosthetic Chemical Groups Required for Maximal Muscarinic Action, pp. 94-96
Carl C. Pfeiffer


In the Laboratory
The Specific Heat of Human Blood, pp. 97-98
Milton Mendlowitz
Qualitative Reaction for 2,4-Dichlorophenoxyacetic Acid, pp. 98-99
Virgil H. Freed
Proposed Method for Measuring the Movement of Soluble Fertilizer Salts in the Soil, pp. 99-100
Jackson B. Hester

Previous Issue: New Series, Vol. 107, No. 2768, Jan. 16, 1948
Next Issue: New Series, Vol. 107, No. 2770, Jan. 30, 1948



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Science, New Series, Vol. 107, No. 2770, Jan. 30, 1948


Previous Issue: New Series, Vol. 107, No. 2769, Jan. 23, 1948
Next Issue: New Series, Vol. 107, No. 2771, Feb. 6, 1948


Front Matter (2 pp.)
Symbiosis, Antibiosis, and Cancer, pp. 101-104
E. V. Cowdry


Obituary
Selig Hecht: 1892-1947, pp. 105-107
Brian O'Brien; Harry Grundfest; Emil Smith


News and Notes, pp. 107-112


Comments and Communications
pH-Fluorescence of Pyrolyzed Amino Acids, p. 113
A. R. Patton; E. M. Foreman
Benzene Hexachloride and Poultry Meat, p. 113
Paul D. Harwood
Chloromycetin and Streptothricin, p. 113
H. E. Carter; David Gottlieb; H. W. Anderson


Technical Papers
Regression of Lymphosarcoma Produced by Intraperitoneal Administration of 95% Ethyl Alcohol, pp. 114-115
Allan D. Bass; Marion L. H. Freeman
Some Biological Effects Due to Nuclear Fission, pp. 115-118
C. A. Tobias; P. P. Weymouth; L. R. Wasserman; G. E. Stapleton
Protection against Bacterial Endotoxins by Penicillin and Its Impurities, pp. 118-119
C. Phillip Miller; Walter D. Hawk; Alden K. Boor
The Folic Acid Activity and Antagonism of Two Structurally Related Derivatives of Benzimidazole, pp. 119-120
Pradisth C. Edwards; Dorothy Starling; Albert M. Mattocks; Howard E. Skipper


In the Laboratory
A Simplified Basal Electrode for Routine EEG Use, p. 121
Charles W. Umlauf
Oscillographic Scatterplots Illustrating Various Degrees of Correlation, pp. 121-124
J. C. R. Licklider; E. Dzendolet


Book Reviews
----------------, pp. 124-125
Die deutschen wissenschaftlichen Bibliotheken nach dem Krieg
Georg Leyh
Review author[s]: Lawrence S. Thompson
----------------, pp. 125-126
The Second Forty Years
Edward J. Stieglitz
Review author[s]: A. I. Lansing
----------------, p. 126
Physiology of Man in the Desert
E. F. Adolph
Review author[s]: H. C. Bazett
----------------, p. 126
History of Medicine: A Correlative Text Arranged According to Subjects
Cecilia C. Mettler
Review author[s]: Chauncey D. Leake

Previous Issue: New Series, Vol. 107, No. 2769, Jan. 23, 1948
Next Issue: New Series, Vol. 107, No. 2771, Feb. 6, 1948



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Science, New Series, Vol. 107, No. 2771, Feb. 6, 1948


Previous Issue: New Series, Vol. 107, No. 2770, Jan. 30, 1948
Next Issue: New Series, Vol. 107, No. 2772, Feb. 13, 1948


Front Matter (2 pp.)
Distribution of American Research Funds, pp. 127-130
Clarence A. Mills


Obituary
Rudolf W. Glaser: 1888-1947, pp. 131-132
Wm. Trager


Association Affairs
AAAS Journals, p. 132
Section on Anthropology (H), p. 132
Marian W. Smith
Symposium on Industrial Processes (Section C), p. 133
Charles D. Hurd
Symposium on Antibiotics (Section Nm), pp. 133-134
Malcolm H. Soule


News and Notes, pp. 134-139


Comments and Communications
A Living Metasequoia in China, p. 140
E. D. Merrill
AAAS Meetings and Lantern Slides, pp. 140-141
Harry J. Fuller
Projection of Artificial Meteor Trails on the Moon, pp. 141-142
James C. Bartlett
Value of Cytochrome C in Anoxia of Newborn Guinea Pigs, p. 142
Bernard Benjamin; Morris Steiner; Doris H. Milman


Technical Papers
Streptomycin-Sensitive, -Dependent, and -Resistant Bacteria, pp. 143-144
Tom Fite Paine; Maxwell Finland
The Static Electrification of Dust Clouds, pp. 144-146
John G. Miller; Heinz Heinemann; W. S. W. McCarter
The Effect of α -Tocopheryl Phosphate on Diphosphopyridine Nucleotidase, pp. 146-147
Wm. M. Govier; Naomi S. Jetter
The Sex of the Host as a Factor in Plasmodium gallinaceum Infections in Young Chicks, pp. 147-148
B. E. Bennison; G. Robert Coatney
The Effect of Relative Concentration on Complement Fixation by Identical Amounts of Antigen and Antibody, pp. 148-150
Irving Gordon; Gladys M. Gnesh
Effect of Low Temperatures on the Germination of Inbred Lines of Sweet Corn, p. 150
Gordon Haskell


In the Laboratory
The Solubility of Progesterone in Saline, p. 151
Thomas R. Forbes; Charles W. Hooker
A Simplified Procedure for Breaking Diapause in Grasshopper Eggs, p. 152
Eleanor H. Slifer
A Rapid Method for Celloidin Impregnation of Undecalcified Bone, p. 152
John J. Bertrand


Book Reviews
----------------, p. 153
The Psychology of Ego-Involvements: Social Attitudes & Identifications
Muzafer Sherif; Hadley Cantril
Review author[s]: C. W. Huntley
----------------, p. 153
Colloid Science, a Symposium
E. K. Rideal
Review author[s]: Karl Sollner
----------------, pp. 153-154
Multiple Factor Analysis: A Development and Expansion of ``The Vectors of Mind.''
L. L. Thurstone
Review author[s]: Charles M. Harsh


Scientific Book Register, p. 154

Previous Issue: New Series, Vol. 107, No. 2770, Jan. 30, 1948
Next Issue: New Series, Vol. 107, No. 2772, Feb. 13, 1948



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Science, New Series, Vol. 107, No. 2772, Feb. 13, 1948


Previous Issue: New Series, Vol. 107, No. 2771, Feb. 6, 1948
Next Issue: New Series, Vol. 107, No. 2773, Feb. 20, 1948


Front Matter (2 pp.)
Three Quarter-Centuries of Cytology, pp. 155-159
Franz Schrader


Association Affairs
Centennial Meeting Plans, p. 160
Section on Astronomy (D), pp. 160-161
C. C. Wylie


News and Notes, pp. 162-165


Comments and Communications
On Paraffin Embedding, p. 166
A. Weir Bell
Proposed Changes in Article 25 (the Law of Priority) of the International Rules of Zoological Nomenclature, pp. 166-167
Edward A. Chapin; J. Brookes Knight; Robert R. Miller
The Situation in Argentine Universities, pp. 167-168
Harry Grundfest


Technical Papers
A New Penicillin for Prolonged Blood Levels, pp. 169-170
Nicholas P. Sullivan; Alfred T. Symmes; Henry C. Miller; H. W. Rhodehamel
Delayed Maturity of Bean Plants Sprayed with Solutions of 2,4-Dichlorophenoxyacetic Acid of Nonherbicidal Concentrations, pp. 170-171
E. R. Stromme; C. L. Hamner
Survival Time of Various Warm-Blooded Animals in Extreme Cold, pp. 171-172
S. M. Horvath; G. E. Folk; F. N. Craig; W. Fleischmann
The Respiration of Streptomyces griseus, pp. 172-173
David Gottlieb; H. W. Anderson
Sucrose in the Stalks of Maize Inbreds, p. 174
W. Ralph Singleton


In the Laboratory
A Simple Automatic Pipette Washer, p. 175
Wm. Trager
Pollak's Trichrome Stain for Demonstrating Distemper Inclusion Bodies in Tissue Sections, p. 175
John R. Gorham
A New Method for Rearing Drosophila, pp. 176-177
A. C. Hodson; H. C. Chiang


Book Reviews
----------------, p. 178
Theory and Applications of Electricity and Magnetism
Charles A. Culver
Review author[s]: Z. I. Slawsky
----------------, p. 178
Organic Analytical Reagents
Frank J. Welcher
Review author[s]: John H. Yoe

Previous Issue: New Series, Vol. 107, No. 2771, Feb. 6, 1948
Next Issue: New Series, Vol. 107, No. 2773, Feb. 20, 1948



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Science, New Series, Vol. 107, No. 2773, Feb. 20, 1948


Previous Issue: New Series, Vol. 107, No. 2772, Feb. 13, 1948
Next Issue: New Series, Vol. 107, No. 2774, Feb. 27, 1948


Front Matter (2 pp.)
The Administration of Federal Research, pp. 179-183
W. V. Lambert

News and Notes, pp. 184-190


Comments and Communications
Mustard--Its Preparation and Use, p. 191
R. Macy
Method for Changing Units, p. 191
Burton H. Sanders
The ''Polished Rocks'' of Cornudas Mountain, New Mexico, pp. 191-192
Chapman Grant
Books for Korea, p. 192
Glenn A. Noble


Technical Papers
Factors Influencing the Mutation Rate in Neurospora, pp. 193-194
Helma Miller; William D. McElroy
The Chemical Nature and Origin of Phaseolus Virus 2 Crystalline Inclusions, p. 194
Saul Rich
Effect of Cholinesterase-Containing Globulin Fraction of Human Plasma in Macrocytic Anemia, pp. 195-196
Robert D. Barnard; John W. Mentha
Sulfaquinoxaline in the Control of Eimeria tenella and Eimeria necatrix in Chickens on a Commercial Broiler Farm, p. 196
L. C. Grumbles; J. P. Delaplane; T. C. Higgins
Weed Control in the Tropics, pp. 196-197
A. S. Crafts
The Male Frog, Rana pipiens, as a New Test Animal for Early Pregnancy, p. 198
P. B. Wiltberger; D. F. Miller
Chromosome Breakage in Plants Induced by Radioactive Phosphorus (P32), pp. 198-199
T. J. Arnason; Elaine Cumming; J. W. T. Spinks
The Electric Charge of Red Blood Cells in Malaria, pp. 199-200
W. B. Redmond


In the Laboratory
The Ecchymosis Test for Capillary Hemorrhagic Diathesis, pp. 201-202
Alfred Lewin Copley
Method for Making Cartesian Divers, pp. 202-203
C. Lloyd Claff
Laboratory Preparation and Decontamination of Mustard, p. 204
A. M. Reeves; S. Love
The Excystment of Colpoda duodenaria, pp. 204-205
A. G. R. Strickland; A. J. Haagen-Smit


Book Reviews
----------------, p. 205
General Psychology
John E. Bentley
Review author[s]: Max Meenes
----------------, pp. 205-206
Radar Aids to Navigation
John S. Hall
Review author[s]: John Q. Stewart


Scientific Book Register, p. 206

Previous Issue: New Series, Vol. 107, No. 2772, Feb. 13, 1948
Next Issue: New Series, Vol. 107, No. 2774, Feb. 27, 1948



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Science, New Series, Vol. 107, No. 2774, Feb. 27, 1948


Previous Issue: New Series, Vol. 107, No. 2773, Feb. 20, 1948
Next Issue: New Series, Vol. 107, No. 2775, Mar. 5, 1948


Front Matter (2 pp.)
A Fossil-collecting Campaign in New Mexico, pp. 207-212
George Gaylord Simpson


Association Affairs
Itinerary, First Annual International Photography-in-Science Salon, p. 212
Section on Psychology (I), pp. 212-213
Section on Mathematics (A), p. 213


News and Notes, pp. 214-220


Technical Papers
Absence of Sickling Phenomenon of the Red Blood Corpuscle among Brazilian Indians, pp. 221-222
E. M. da Silva
Nutritional Requirements of the Rat for Reproduction and Lactation, pp. 222-223
Albert J. Sica; Leopold R. Cerecedo
The Spinal Anaesthetic Effects of Ephedrine Sulfate: A Preliminary Report, p. 223
J. Eugene Ruben; Patricia-Mary Kamsler; W. Lyall Howell
Fluorescein as an Indicator of Antihistaminic Activity: Inhibition of Histamine-induced Fluorescence in the Skin of Human Subjects, pp. 224-225
Samuel C. Bukantz; Gustave J. Dammin
Effect of Hormone on Root Formation in Artocarpus communis, p. 225
Thomas J. Muzik
The Inhibition of Virus Increase by Malachite Green, p. 226
William N. Takahashi
Stability of Solutions of Pure Ascorbic Acid and of Dehydroascorbic Acid, pp. 226-227
Louise P. Guild; Ernest E. Lockhart; Robert S. Harris


In the Laboratory
An Extension of the Isotope Dilution Method, p. 228
Konrad Bloch; H. S. Anker
Assay of Bacitracin in Body Fluids, pp. 228-229
Glenn C. Bond; Mary Ann Nook
An Apparatus to Facilitate Intravenous Injections in the Mouse, pp. 229-230
James J. Nickson; Sam S. Barkulis
A Simple Self-leveling Drinking Well for Laboratory Animals, pp. 230-231
David Lehr


Book Reviews
----------------, pp. 231-232
Reading and Visual Fatigue
Leonard Carmichael; Walter F. Dearborn
Review author[s]: Harold E. Burtt


Scientific Book Register, p. 232

Previous Issue: New Series, Vol. 107, No. 2773, Feb. 20, 1948
Next Issue: New Series, Vol. 107, No. 2775, Mar. 5, 1948



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Science, New Series, Vol. 107, No. 2775, Mar. 5, 1948


Previous Issue: New Series, Vol. 107, No. 2774, Feb. 27, 1948
Next Issue: New Series, Vol. 107, No. 2776, Mar. 12, 1948


Front Matter (2 pp.)
Nomenclature of Streptomycin Preparations, pp. 233-234
Selman A. Waksman

Inter-Society Committee for a National Science Foundation: Report of the Meeting of December 28, 1947, pp. 235-236
Dael Wolfle


Association Affairs
Section on Botanical Sciences (G), p. 237
The Chicago Meeting, December 26-31, 1947, pp. 237-239


News and Notes, pp. 240-245


Technical Papers
Toxicity of γ-Benzene Hexachloride in Clothing, pp. 246-247
R. G. Horton; L. Karel; L. E. Chadwick
Inactivation of 2,4-D on Sweet-Potato Slips with Activated Carbon, pp. 247-248
H. Fred Arle; O. A. Leonard; V. C. Harris
Studies on Radiosensitivity of Cells, pp. 248-250
L. O. Jacobson; E. K. Marks; E. O. Gaston; E. L. Simmons; M. H. Block
Alterations in the Development of Plasmodium gallinaceum Following Passage through Tissue Culture, p. 250
Robert M. Lewert
Dehydroascorbic Acid in Frozen and Cooked Frozen Vegetables, pp. 251-252
C. L. Bedford; Margaret A. McGregor
On the Infrared Spectra of Nucleic Acids and Certain of Their Components, p. 252
Elkan R. Blout; Melvin Fields


In the Laboratory
Radiocarbon and Filter-Paper Partition Chromatography, pp. 253-254
Robert M. Fink; Kay Fink
Quantitative Determination of Carbohydrates with Dreywood's Anthrone Reagent, pp. 254-255
Daniel Luzon Morris
Improved Assembly of the Hartung-Clark Double Cannula for the Isolated Frog Heart, pp. 255-256
Go Lu

Previous Issue: New Series, Vol. 107, No. 2774, Feb. 27, 1948
Next Issue: New Series, Vol. 107, No. 2776, Mar. 12, 1948



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Science, New Series, Vol. 107, No. 2776, Mar. 12, 1948


Previous Issue: New Series, Vol. 107, No. 2775, Mar. 5, 1948
Next Issue: New Series, Vol. 107, No. 2777, Mar. 19, 1948


Front Matter (2 pp.)
A Federal Program in Applied Mathematics, pp. 257-262
J. H. Curtiss


Obituary
Alfred North Whitehead: 1861-1947, pp. 262-263
F. S. C. Northrop


News and Notes, pp. 264-268


Comments and Communications
A Museum of the Social Sciences, p. 269
Marcus S. Goldstein
A Synthesis of Coniferyl Alcohol, p. 269
C. F. H. Allen; John R. Byers
Production of Mesons by the 184-Inch Berkeley Cyclotron, pp. 270-271
Eugene Gardner; C. M. G. Lattes


Technical Papers
The Immediate Pressor Effect of Desoxycorticosterone Acetate, pp. 272-273
Melvin L. Goldman; Henry A. Schroeder
The Nasal Cavity of the Rat in Pharmacological and Other Experimentation, pp. 273-274
George Kelemen
Sorption of Fumigant Vapors by Soil, pp. 274-275
Irvin Fuhr; Aurora V. Bransford; Seymour D. Silver
Staining of the Stem Tissue of Plants by Triphenyltetrazolium Chloride, p. 275
Thomas D. Waugh
Development of a Strain of Houseflies Resistant to DDT, p. 276
Arthur W. Lindquist; H. G. Wilson
Susceptibility of DDT-Resistant Houseflies to Other Insecticidal Sprays, pp. 276-277
H. G. Wilson; J. B. Gahan


In the Laboratory
A Simplified Diffusion-Dehydration Technique in the Microtomy of Tissues, pp. 278-279
Albert P. Lorz
Effect of Acetone and Alcohol Fixation and Paraffin Embedding on Activity of Acid and Alkaline Phosphatases in Rat Tissues, pp. 279-281
Robert O. Stafford; William B. Atkinson
A Simple Stereoscope for Viewing Double-Lens Camera Stereographs without Transposition, p. 281
Allen H. Schooley


Book Reviews
----------------, p. 282
Fisiologia del trabajo humano
Amadeo Herlitzka
Review author[s]: Josef Brozek
----------------, p. 282
Coating and Ink Resins: A Technological Study
William Krumbhaar
Review author[s]: Donald J. Byers

Previous Issue: New Series, Vol. 107, No. 2775, Mar. 5, 1948
Next Issue: New Series, Vol. 107, No. 2777, Mar. 19, 1948



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Science, New Series, Vol. 107, No. 2777, Mar. 19, 1948


Previous Issue: New Series, Vol. 107, No. 2776, Mar. 12, 1948
Next Issue: New Series, Vol. 107, No. 2778, Mar. 26, 1948


Front Matter (2 pp.)
Arctic Research Laboratory, Office of Naval Research, Point Barrow, Alaska, p. 283
M. C. Shelesnyak

Arctic Research at Point Barrow, Alaska, pp. 284-286
Laurence Irving

News and Notes, pp. 286-291


Comments and Communications
On the Use of Cellulose in Diets, p. 292
Frank Davis; George M. Briggs
On Literature Citation, pp. 292-293
A. C. Zachlin
Concerning the Genera of Amebas, pp. 293-294
Robert L. King; Theodore L. Jahn
Effect of Formaldehyde on Picea and Tsuga Herbarium Specimens, p. 294
Albert G. Johnson


Technical Papers
Determination of the Fate of Phosphorus in the Laying Hen by means of Radiophosphorus (P32), pp. 295-296
J. B. O'Neil; J. R. Jowsey; C. C. Lee; M. A. Reade; J. W. T. Spinks
Some Observations on the Larval Growth Rate and Viability of Two Tumor Strains of Drosophila melanogaster, pp. 296-297
Ernest W. Hartung
High Insulin Tolerance in an Inbred Strain of Mice, pp. 297-299
H. B. Chase; M. S. Gunther; J. Miller; Davida Wolffson
Introduction of Radioactive Sulfur (S35) into the Penicillin Molecule by Biosynthesis, pp. 299-300
S. F. Howell; J. D. Thayer; L. W. Labaw
Interference with Estrogen-Induced Tissue Growth in the Chick Genital Tract by a Folic Acid Antagonist, p. 300
Roy Hertz


In the Laboratory
A Method for Silvering a Dewar Flask for Optical Experiments, p. 301
John S. Haynes; Jesse F. Scott
Low-Temperature Spectroscopy of Biological Compounds, p. 302
Jesse F. Scott; Robert L. Sinsheimer; John R. Loofbourow


Book Reviews
----------------, p. 303
Approaches to Tumor Chemotherapy
F. R. M.
Review author[s]: Gray H. Twombly
----------------, pp. 303-304
Erdkunde: Archiv für wissenschaftliche Geographie
Herbert Lehmann
Review author[s]: Malcolm J. Proudfoot


Scientific Book Register, p. 304

Previous Issue: New Series, Vol. 107, No. 2776, Mar. 12, 1948
Next Issue: New Series, Vol. 107, No. 2778, Mar. 26, 1948



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Previous Issue: New Series, Vol. 107, No. 2777, Mar. 19, 1948
Next Issue: New Series, Vol. 107, No. 2779, Apr. 2, 1948


Front Matter (2 pp.)
Medical Science and the Longer Life, pp. 305-307
Esmond R. Long

Gordon Research Conferences, AAAS, 1948: Colby Junior College, New London, New Hampshire, June 21-September 3, pp. 308-312
W. George Parks


Association Affairs
Southwestern Division, AAAS, p. 312


News and Notes, pp. 313-318


Technical Papers
Granulosa Cell Tumors in Female Rats and Rabbits, pp. 319-320
B. M. Peckham; R. R. Greene; M. E. Jeffries
History of Crystal Growth Revealed by Fractography, pp. 320-321
C. A. Zapffe; F. K. Landgraf; C. O. Worden
Cytochemical Demonstration of ''Acid'' Phosphatase in Bone Marrow Smears, pp. 322-323
M. Rabinovitch; L. C. U. Junqueira; F. T. Mendes


In the Laboratory
A Simple Tangent Meter, pp. 323-324
Vernon L. Frampton
Slide Rule Calculations of Radioactive Decay, p. 324
Harold P. Knauss
Faster Sharpening of Microtome Knives by the Use of Alumina-Dreft Suspension, p. 324
Henry Sugiura


Book Reviews
----------------, pp. 325-326
Fundamentals of Statistics
Truman Lee Kelley
Review author[s]: Frank M. Weida
----------------, p. 326
Classification of Fishes, Both Recent and Fossil
Leo S. Berg
Review author[s]: Robert R. Miller


Scientific Book Register, p. 326

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Next Issue: New Series, Vol. 107, No. 2779, Apr. 2, 1948



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Previous Issue: New Series, Vol. 107, No. 2778, Mar. 26, 1948
Next Issue: New Series, Vol. 107, No. 2780, Apr. 9, 1948


Front Matter (2 pp.)
Low Temperature and Some of Its Effects upon the Behavior of Matter, pp. 327-333
S. C. Collins

Loyalty Clearance Procedures in Research Laboratories, pp. 333-337
Committee on Secrecy and Clearance


Obituary
Clark Wissler: 1870-1947, pp. 338-339
David G. Mandelbaum


News and Notes, pp. 339-343


Comments and Communications
Fluorescence of Solid Streptomycin Salts, p. 344
H. A. Frediani
Should There Be a Living Metasequoia?, pp. 344-345
James M. Schopf
Brown, Mature-Fruit Color in Pepper (Capsicum frutescens), pp. 345-346
Paul G. Smith
Crystalline Synthetic Vitamin A and Neovitamin A, p. 346
J. D. Cawley; C. D. Robeson; L. Weisler; E. M. Shantz; N. D. Embree; J. G. Baxter


Technical Papers
Effect of Cooking on the DDT Content of Beef, p. 347
R. H. Carter; P. E. Hubanks; H. D. Mann; Lucy M. Alexander; Grace E. Schopmeyer
Experiments on Bird Navigation, pp. 347-349
Donald R. Griffin; Raymond J. Hock
A Mechanism of Concussion: A Theory, pp. 349-353
James W. Ward; L. H. Montgomery; Sam L. Clark


In the Laboratory
Methods for Labeling Thyroxine with Radioactive Iodine, pp. 353-354
Earl Frieden; Mortimer B. Lipsett; Richard J. Winzler
A Convenient Plant Pollinating Kit, p. 354
C. A. Schroeder

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Next Issue: New Series, Vol. 107, No. 2780, Apr. 9, 1948



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Previous Issue: New Series, Vol. 107, No. 2779, Apr. 2, 1948
Next Issue: New Series, Vol. 107, No. 2781, Apr. 16, 1948


Front Matter (2 pp.)
Trends in Supply and Demand of Scientific Personnel, pp. 355-360
Ewan Clague

Programs for Fuller Utilization of Present Resources of Scientific Personnel, pp. 360-363
A. H. Hausrath

News and Notes, pp. 364-368


Comments and Communications
Hydrolysis of Steroid Esters on Activated Alumina, p. 369
Waldemar Dasler
Crayfish in Southern Nevada, p. 369
Horton H. Hobbs; Donald J. Zinn
The Effect of Rutin on Anaphylactic and Histamine Shock, pp. 369-370
Robert H. Wilson; Floyd DeEds
The Geological Society of America: A Proposed Section on Geomorphology and Glacial Geology, p. 370
Howard A. Meyerhoff
FIAT Review of German Science, p. 370
Otto Meyerhof


Technical Papers
Physical State of Lipids and Foreign Substances Producing Atherosclerosis, pp. 371-373
John R. Moreton
The Production of Mushroom Mycelium (Agaricus campestris) in Submerged Culture, p. 373
Harry Humfeld
Heterologous Tumor Transplantation by Intravenous Inoculation of the Chick Embryo, p. 374
Henry F. Lee; Doris H. Bender; Charles E. Friedgood
Diffuse and Nodular Hyperplasia of the Thyroid Gland in Thiouracil-Treated Rats, pp. 374-375
William C. Kuzell; Helen B. Tripi; Grace M. Gardner; Gert L. Laqueur


In the Laboratory
The Use of Glycine in the Disruption of Bacterial Cells, pp. 376-377
Esther S. Maculla; Philip B. Cowles
A Pipette for the Rapid Transfer of Measured Quantities of Solution, p. 377
C. M. Woodruff
A Method for the Aeration of Liquid Cultures of Microorganisms, pp. 377-378
Glenwood B. Achorn; John L. Schwab

Previous Issue: New Series, Vol. 107, No. 2779, Apr. 2, 1948
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Previous Issue: New Series, Vol. 107, No. 2780, Apr. 9, 1948
Next Issue: New Series, Vol. 107, No. 2782, Apr. 23, 1948


Front Matter (2 pp.)
Some Recommendations of the President's Commission on Higher Education, pp. 379-383
Alfred B. Bonds

Adjustments in University Plans and Programs to Meet Long-Range Needs, pp. 384-386
Arthur S. Adams

News and Notes, pp. 386-390


Comments and Communications
Distribution of Funds for Medical Research, p. 391
Thomas B. Turner
Growth of Stumps, pp. 391-392
Isador Aaron
Courses on the Biochemistry of Cancer, p. 392


Technical Papers
The Laboratory Growing of Quartz, pp. 393-394
Danforth R. Hale
Effect of Diethylstilbestrol on the Thyroid Glands of Chicks Receiving Thiouracil, pp. 394-395
Jean E. Selle; Raymond M. Selle
Crystalline Vitamin B12, pp. 396-397
Edward L. Rickes; Norman G. Brink; Frank R. Koniuszy; Thomas R. Wood; Karl Folkers
Activity of Vitamin B12 for the Growth of Lactobacillus lactis, pp. 397-398
Mary S. Shorb
Activity of Vitamin B12 in Addisonian Pernicious Anemia, p. 398
Randolph West


In the Laboratory
Stabilization of Prothrombin Activity by Freezing: Application to the Standardization of Prothrombin Determinations, pp. 399-400
Alexander Randall; J. Perlingiero Randall
An Improved Method of Precipitating and Drying Vinyl Copolymers, pp. 400-401
Harold Werbin
Automatic Masking of Lantern Slides, p. 401
D. Eugene Copeland
A Simple Graphical Solution for Potency Calculations of Multidose Assays, pp. 401-402
Robert A. Harte
A Method for Obtaining Massive Growth of Bacteria in Fluid Media, p. 402
J. Howard Brown; Ronald M. Wood


Book Reviews
----------------, p. 403
Physical Fitness Appraisal and Guidance
Thomas Kirk Cureton
Review author[s]: David B. Dill
----------------, p. 403
Hearing Aids: An Experimental Study of Design Objectives
Hallowell Davis
Review author[s]: Mark B. Gardner
----------------, pp. 403-404
The Engrammes of Psychiatry
J. M. Nielson; George N. Thompson
Review author[s]: William T. Lhamon


Scientific Book Register, p. 404

Previous Issue: New Series, Vol. 107, No. 2780, Apr. 9, 1948
Next Issue: New Series, Vol. 107, No. 2782, Apr. 23, 1948



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Previous Issue: New Series, Vol. 107, No. 2781, Apr. 16, 1948
Next Issue: New Series, Vol. 107, No. 2783, Apr. 30, 1948


Front Matter (2 pp.)
Recent Theories about the Origin of the Solar System, pp. 405-411
D. ter Haar

The Neurological and Behavioristic Psychological Basis of the Ordering of Society by means of Ideas, pp. 411-417
F. S. C. Northrop

News and Notes, pp. 417-420


Comments and Communications
Effect of Anoxia and Cytochrome C on Readily Hydrolyzable Phosphate of Rat Tissues, p. 421
Wade N. Miller; Pearl Anderson; Albert Dorfman
Sympathin E and Nor-Adrenaline, p. 422
U. S. v. Euler


Technical Papers
Essentiality of Calcium in the Nutrition of Fungi, p. 423
Robert A. Steinberg
Prevention of Trichobezoar in the Cotton Rat, Sigmodon hispidus hispidus, pp. 424-425
S. R. Howell; C. A. Schlack; C. M. McCay; B. L. Taylor
An Experimental Syndrome of Fatty Liver, Uric Acid Kidney Stones, and Acute Pancreatic Necrosis Produced in Dogs by Exclusive Feeding of Bacon, pp. 425-426
J. Groen
Photochemical Oxidation of Nicotine in the Presence of Methylene Blue, pp. 426-427
Leopold Weil
Transformation Products of Nicotine in Fermented Tobacco, pp. 427-428
Walter G. Frankenburg


In the Laboratory
Intravenous Methylene Blue for Studying Fiber Degeneration in the Central Nervous System, p. 429
William H. Feindel; Anthony C. Allison
A New Series of Reagents for the Colorimetric Determination of Steroids, pp. 429-431
Leland C. Clark; Haskell Thompson
A Radio Frequency Coupled Tissue Stimulator, p. 432
Otto H. Schmitt

Previous Issue: New Series, Vol. 107, No. 2781, Apr. 16, 1948
Next Issue: New Series, Vol. 107, No. 2783, Apr. 30, 1948



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Previous Issue: New Series, Vol. 107, No. 2782, Apr. 23, 1948
Next Issue: New Series, Vol. 107, No. 2784, May 7, 1948


Front Matter (2 pp.)
Nuclear Magnetism in Relation to Problems of the Liquid and Solid States, pp. 433-440
E. M. Purcell

News and Notes, pp. 441-444


Comments and Communications
Taxonomic Characteristics for Amoebae, p. 445
Charles G. Wilber
The Native Proteins as Polycondensations of Amino Acids, pp. 445-446
Dorothy Wrinch


Technical Papers
Total White Cell Counts of Peripheral and Heart Blood of the Rat, p. 447
F. H. Quimby; P. A. Saxon; L. G. Goff
Ultraviolet Light-Absorption of Alkali-Treated Solutions of Carbohydrates, pp. 447-449
Duncan Macmillan; Eugene H. Melvin
Hemolysis of Human Red Cells by Saponin Following Viral Action, pp. 450-451
B. A. Briody


In the Laboratory
Photograms of Small Bones and Skulls, p. 451
Ernest C. Driver
Apparatus for Partition Chromatography on Paper, pp. 451-452
F. C. Steward; W. Stepka; John F. Thompson
A Turbidimeter for the Measurement of the Solubility of Slightly Soluble Liquids, p. 453
James F. Coyle; George Goldfinger


Scientific Book Register, p. 454

Previous Issue: New Series, Vol. 107, No. 2782, Apr. 23, 1948
Next Issue: New Series, Vol. 107, No. 2784, May 7, 1948



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Science, New Series, Vol. 107, No. 2784, May 7, 1948


Previous Issue: New Series, Vol. 107, No. 2783, Apr. 30, 1948
Next Issue: New Series, Vol. 107, No. 2785, May 14, 1948


Front Matter (2 pp.)
Centennial Celebration, AAAS--A Preview, pp. 455-456
Edmund W. Sinnott

The National Academy of Sciences: Abstracts of Papers Presented at 1948 Meeting, pp. 457-466
News and Notes, pp. 467-473


Technical Papers
A Coagulation Defect Produced by Nitrogen Mustard, p. 474
T. R. Smith; L. O. Jacobson; C. L. Spurr; J. G. Allen; M. H. Block
Recovery of Pneumoencephalitis (Newcastle) Virus from the Air of Poultry Houses Containing Infected Birds, pp. 474-475
P. D. DeLay; K. B. DeOme; R. A. Bankowski
High-Level Gravels of Western Grand Canyon, pp. 475-476
Donaldson Koons
The Path of Carbon in Photosynthesis, pp. 476-480
M. Calvin; A. A. Benson


In the Laboratory
Sodium Chlorite as an Aid in Paleobotanical and Anatomical Study of Plant Tissues, pp. 480-481
E. S. Barghoorn
Paper Chromatography Using Capillary Ascent, pp. 481-483
Roger J. Williams; Helen Kirby


Scientific Book Register, p. 484

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Next Issue: New Series, Vol. 107, No. 2785, May 14, 1948



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Previous Issue: New Series, Vol. 107, No. 2784, May 7, 1948
Next Issue: New Series, Vol. 107, No. 2786, May 21, 1948


Front Matter (2 pp.)
Some Vital Books in Science: 1848-1947, pp. 485-491
J. Christian Bay

The Development of Scientific Publications and Their Importance in the Promotion of International Scientific Relations, pp. 491-497
Frans Verdoorn

The National Diet Library of Japan, pp. 497-501
Verner W. Clapp

News and Notes, pp. 502-504


Comments and Communications
Phosphate Coating of Aluminum and Polymorphism of Chromium Phosphate, p. 505
G. L. Clark; A. P. Tai
National Science Foundation--A Peril to American Universities, pp. 505-506
John L. Rich
A Promising Type of Male Sterility for Use in Hybrid Tomato Seed Production, p. 506
W. E. Roever
A Comparative Study of Zygote Germination in the Saprolegniaceae, p. 506
A. W. Ziegler


Book Reviews
Visual Aids in Geology, p. 507
Review author[s]: Howard A. Meyerhoff
Visual Aids in Biology, pp. 507-508
General Biology
J. W. Mavor
Laboratory Exercises in General Biology
J. W. Mavor
Slidefilm Series to Accompany General Biology
Review author[s]: I. B. Hansen
----------------, p. 508
Scientists Starred 1903-1943 in ''American Men of Science'': A Study of Collegiate and Doctoral Training, Birthplace, Distribution, Backgrounds, and Developmental Influences
Stephen Sargent Visher
Review author[s]: Raymond Walters
----------------, pp. 508-509
The Scientists Speak
Warren Weaver
Review author[s]: R. W. Gerard
----------------, p. 509
Life: Its Nature and Origin
Jerome Alexander
Review author[s]: M. F. Ashley Montagu
----------------, pp. 509-510
Experimental Designs in Social Research
F. Stuart Chapin
Review author[s]: Russell L. Ackoff
----------------, p. 510
Our Plundered Planet
Fairfield Osborn
Review author[s]: William Vogt
----------------, pp. 510-511
Introduction to Mathematical Statistics
Paul G. Hoel
Review author[s]: Churchill Eisenhart
----------------, p. 511
Theories of Servomechanisms
Hubert M. James; Nathaniel B. Nichols; Ralph S. Phillips
Review author[s]: E. M. Sabbagh
----------------, pp. 511-512
Methods of Algebraic Geometry
W. V. D. Hodge; D. Pedoe
Review author[s]: Arthur B. Coble
----------------, p. 512
Integration in Finite Terms: Liouville's Theory of Elementary Methods
Joseph Fels Ritt
Review author[s]: Arthur Rosenthal
----------------, p. 512
Paramagnetic Relaxtion
C. J. Gorter
Review author[s]: E. M. Purcell
----------------, pp. 512-513
New Developments in Ferromagnetic Materials, with Introductory Chapters on the Statics and the Dynamics of Ferromagnetism
J. L. Snoek
Review author[s]: Frederick Seitz
----------------, p. 513
Nuclear Physics in Photographs: Tracks of Charged Particles in Photographic Emulsions
C. F. Powell; G. P. S. Occhialini
Review author[s]: E. Segrè
----------------, pp. 513-514
Techniques in Experimental Electronics
C. H. Bachman
Review author[s]: Otto H. Schmitt
----------------, p. 514
Radar Beacons
Arthur Roberts
Review author[s]: G. C. Danielson
----------------, p. 514
Vacuum Tubes
Karl R. Spangenberg
Review author[s]: J. Barton Hoag
----------------, p. 515
Crystal Rectifiers
Henry C. Torrey; Charles A. Whitmer
Review author[s]: R. B. Wright
----------------, pp. 515-516
Powder Metallurgy: Its Physics and Production
Paul Schwarzkopf
Review author[s]: A. J. Langhammer
----------------, p. 516
Seventy-Five Years of Progress in the Mineral Industry
A. B. Parsons
Review author[s]: Russell S. Poor
----------------, pp. 516-517
Angewandte Hydraulik
Robert Dubs
Review author[s]: B. A. Bakhmeteff
----------------, p. 517
Heat
Archie G. Worthing; David Halliday
Review author[s]: W. E. Forsythe
----------------, pp. 517-518
Chemical Process Principles. Pt. II: Thermodynamics; Pt. III: Kinetics and Catalysis
Olaf A. Hougen; Kenneth M. Watson
Review author[s]: Samuel Glasstone
----------------, pp. 518-519
High polymers. Vol. VI: Mechanical Behavior of High Polymers
Turner Alfrey
Review author[s]: A. W. Nolle
----------------, p. 519
Frontiers in Chemistry. Vol. V: Chemical Architecture
R. E. Burk; Oliver Grummitt
Review author[s]: Frederick D. Rossini
----------------, pp. 519-520
Topics in Physical Chemistry: A Supplementary Text for Students of Medicine
W. Mansfield Clark
Review author[s]: L. Michaelis
----------------, p. 520
Selected Values of Properties of Hydrocarbons
Frederick D. Rossini
Review author[s]: V. I. Komarewsky
----------------, pp. 520-521
The Systematic Identification of Organic Compounds: A Laboratory Manual
Ralph L. Shriner; Reynold C. Fuson
Review author[s]: Ed. F. Degering
----------------, p. 521
Encyclopedia of Chemical Technology. Vol I: A to Anthrimides
Raymond E. Kirk; Donald F. Othmer
Review author[s]: H. F. Johnstone
----------------, pp. 521-522
The Sulfonamides and Allied Compounds
Elmore H. Northey
Review author[s]: Maurice L. Moore
----------------, p. 522
The RH Factor in the Clinic and the Laboratory
Joseph M. Hill; William Dameshek
Review author[s]: Laurence H. Snyder
----------------, p. 523
Tuberculosis: A Discussion of Phthisiogenesis, Immunology, Pathologic Physiology, Diagnosis, and Treatment
Francis Marion Pottenger
Review author[s]: Armand Frappier
----------------, p. 523
Animal Genetics and Medicine
Hans Gruneberg
Review author[s]: George W. Woolley
----------------, pp. 523-524
Hispathologic Technic
R. D. Lillie
Review author[s]: Kenneth M. Richter
----------------, p. 524
Annual Review of Microbiology
C. E. Clifton
Review author[s]: Banner Bill Morgan
----------------, pp. 524-525
Kampen mot Ogräset
Hugo Osvald
Review author[s]: Lawrence J. King
----------------, p. 525
The Essentials of Plant Biology
Frank D. Kern
Review author[s]: W. F. Loehwing
----------------, p. 526
The Genetics of Garden Plants
M. B. Crane; W. J. C. Lawrence
Review author[s]: A. B. Stout
----------------, p. 526
Experimental Embryology in the Netherlands, 1940-1945
M. W. Woerdeman; Chr. P. Raven
Review author[s]: Albert Tyler
----------------, pp. 526-527
The Epithelia of Woman's Reproductive Organs: A Correlative Study of Cyclic Changes
George N. Papanicolaou; Herman F. Traut; Andrew A. Marchetti
Review author[s]: Robert T. Frank
----------------, p. 527
The Brain of the Tiger Salamander (Ambystoma Tigrinum)
C. Judson Herrick
Review author[s]: Walter A. Stultz
----------------, pp. 527-528
The Neocortex of Macaca Mulatta
Gerhardt von Bonin; Percival Bailey
Review author[s]: Jerzy E. Rose
----------------, p. 528
The Ways of Fishes
Leonard P. Schultz; Edith M. Stern
Review author[s]: J. T. Nichols
----------------, p. 528
Animals Alive
Austin H. Clark
Review author[s]: Harley J. Van Cleave

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Previous Issue: New Series, Vol. 107, No. 2785, May 14, 1948
Next Issue: New Series, Vol. 107, No. 2787, May 28, 1948


Front Matter (2 pp.)
The Developmental Physiology of Seed Plants, pp. 529-533
W. F. Loehwing


Obituary
Max Planck: 1858-1947, pp. 534-537
James Franck


News and Notes, pp. 537-542


Comments and Communications
The Informal Research Laboratory--A Proposal, p. 543
Chester Hyman
The Norton County, Kansas, Meteorite, p. 543
Lincoln LaPaz
A Proposed Petition to the International Commission on Zoological Nomenclature, pp. 543-544
Curtis W. Sabrosky; R. I. Sailer


Association Affairs
Pacific Division Meeting, p. 545
Resolution on Civil Liberties, p. 545
Request for Address Information, p. 545


Technical Papers
The Change in the Leucocytic Formula by the Leucocytosis-Promoting Factor of Exudates in Experimental Leucemia, pp. 546-547
Valy Menkin
Loss of Contractility of the Uterus and Partial Atrophy of the Uterus and Ovaries in Albino Rats Fed Choline-Deficient Diets, pp. 548-549
Marguerite Peet; Myra M. Sampson
Calcium Deficiency in Serpentine Soils as Revealed by Adsorbent Technique, p. 549
J. Vlamis; H. Jenny


In the Laboratory
Radioautograph Technique with C14, pp. 550-552
A. M. MacDonald; Jock Cobb; A. K. Solomon
A Method for Making Small Rubber Articles for Laboratory Use, p. 552
Albert E. Afford

Previous Issue: New Series, Vol. 107, No. 2785, May 14, 1948
Next Issue: New Series, Vol. 107, No. 2787, May 28, 1948



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Previous Issue: New Series, Vol. 107, No. 2786, May 21, 1948
Next Issue: New Series, Vol. 107, No. 2788, Jun. 4, 1948


Front Matter (2 pp.)
The Current Transition in the Conception of Science, pp. 553-558
D. Ewen Cameron


Obituary
Burton Edward Livingston: 1875-1948, pp. 558-560
Charles A. Shull


American Association for the Advancement of Science, pp. 561-562
Raymund L. Zwemer

News and Notes, pp. 562-565


Comments and Communications
International Depot of Microscopic Preparations of Cytology, p. 566
P. Vayssiere; P. Martens
On the Properties of Gelatin-Dye Phosphors and the Continuum Theory of Szent-Gyorgyi, pp. 566-567
Michael Kasha
Water at — 72°, p. 567
Gabriele Rabel
Surface Tension and Conductivity of Penicillin Salts, p. 567
W. D. Kumler; Edward L. Alpen


Technical Papers
Pulmonary Edema in Leucemic Mice Following Treatment with Urethane, pp. 568-569
William W. Winchester; George M. Higgins
Use of Radioactive Diiodofluorescein in the Diagnosis and Localization of Brain Tumors, pp. 569-571
George E. Moore
Similarity to Heparin of the Clotting Inhibitor in Acute Leucemia and the Significance of Hyperheparinemia in Estrapenic Cholinergic States, pp. 571-572
Robert D. Barnard
Use of a Plastic Material to Increase the Action of the Sodium Salt of 2,4-D, pp. 572-573
C. L. Hamner; Kiang Chi-Kien
Application of Chromatography to Segregation Studies of the Agent of Chicken Tumor I (Rous Sarcoma Virus), pp. 573-575
Vernon T. Riley


In the Laboratory
An Automatic Proportioning Apparatus for Experimental Study of the Effects of Chemical Solutions on Aquatic Animals, pp. 576-577
Albert Collier; Sammy M. Ray
The Induction of Cytogenetic Variations by Ultrasonic Waves, pp. 577-578
R. H. Wallace; R. J. Bushnell; Earl H. Newcomer
A Rapid Method of Single Cell Isolation, p. 578
Richard D. Northcraft


Book Reviews
----------------, p. 579
Surface Chemistry for Industrial Research
J. J. Bikerman
Review author[s]: E. Roger Washburn
----------------, pp. 579-580
Microwave Mixers
Robert V. Pound
Review author[s]: Gustave Shapiro


Scientific Book Register, p. 580

Previous Issue: New Series, Vol. 107, No. 2786, May 21, 1948
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Previous Issue: New Series, Vol. 107, No. 2787, May 28, 1948
Next Issue: New Series, Vol. 107, No. 2789, Jun. 11, 1948


Front Matter (2 pp.)
Goals and Trends of Research in Geology and Geography, pp. 581-584
John L. Rich

The American Philosophical Society: Abstracts of Papers Presented at 1948 Meeting, pp. 585-591
News and Notes, pp. 592-595


Comments and Communications
Toward a More Convenient Method for Expressing the Concentration of Biological Fluids, p. 596
Charles Bishop
Bird Navigation in Homing and in Migration, pp. 596-597
D. B. O. Savile
Physical Basis of Bird Navigation, pp. 597-598
G. H. Henderson
Microbiological Assay or Bacterimetry?, p. 598
G. Toennies


Technical Papers
The Amino Acid Requirements of Swine: I. Tryptophan, pp. 599-600
W. M. Beeson; E. T. Mertz; D. C. Shelton
Trypanosoma cruzi Endotoxin (KR) in the Treatment of Malignant Mouse Tumors, pp. 600-602
Theodore S. Hauschka; Margaret Blair Goodwin
Three New Polymorphs of Zinc Sulfide, p. 602
Clifford Frondel; Charles Palache


In the Laboratory
An Improved Radioactivity Measuring Cup, p. 603
Robert E. Smith; John F. Bronson
A Turbidimetric Method for Determining the Effect of 2,4-D upon the Growth of Yeast, p. 604
Fred R. West; James H. M. Henderson
A Simple Adaptation of the Mercury Calibration of Warburg Manometer Sets to Insure Interchangeability, pp. 604-605
Shannon C. Allen
A Simplified Apparatus for One-Dimensional Paper Partition Chromatography, p. 605
Walter A. Winsten


Book Reviews
----------------, p. 606
The Integrative Action of the Nervous System
Charles Sherrington
Review author[s]: David P. C. Lloyd
----------------, p. 606
Vacuum-Tube Circuits
Lawrence B. Arguimbau
Review author[s]: Wayne B. Nottingham

Previous Issue: New Series, Vol. 107, No. 2787, May 28, 1948
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Science, New Series, Vol. 107, No. 2789, Jun. 11, 1948


Previous Issue: New Series, Vol. 107, No. 2788, Jun. 4, 1948
Next Issue: New Series, Vol. 107, No. 2790, Jun. 18, 1948


Front Matter (2 pp.)
Social Science and the Established Order, pp. 607-611
Eli Ginzberg


Obituary
Simon Flexner and Medical Discovery, pp. 611-613
Peyton Rous


American Association for the Advancement of Science: The Centennial Celebration Washington, D. C. September 13-17, 1948, pp. 614-616
News and Notes, pp. 617-620


Comments and Communications
Radioactive Needles Containing Cobalt 60, p. 621
Wm. G. Myers
Influence of Butyl Alcohol on Shape of Snow Crystals Formed in the Laboratory, pp. 621-622
B. Vonnegut
The Berlin Botanic Garden, p. 622
E. B. Babcock
Measurement of Diffusion Coefficients in Liquids by Radioactive Tracers, p. 622
Andrew Gemant


Technical Papers
Amino Acid Impairment in Casein Heated with Glucose, pp. 623-624
A. R. Patton; E. G. Hill; E. M. Foreman
Newly Discovered Outcrops of the Cannonball Formation in North Dakota, pp. 624-625
Roland W. Brown; Richard W. Lemke
The Effects of X-Rays on the Mitotic Activity of Mouse Epidermis, pp. 625-626
Norman P. Knowlton; Louis H. Hempelmann; Joseph G. Hoffman
A Report on the Ridgway Color Standards, pp. 626-628
Wm. I. Illman; D. H. Hamly
Flowering of the Jersey Type Sweet Potato, p. 628
J. J. Mikell; Julian C. Miller; J. B. Edmond


In the Laboratory
Rearing Houseflies and Blowflies on Dog Biscuit, pp. 629-630
Hubert Frings
Use of Papergrams in the Study of the Urinary Excretion of Radioactive Sulfur Compounds, pp. 630-631
Rudolph M. Tomarelli; Klaus Florey
A Simple Attachment to Increase Depth of Focus of Microscope Objectives for Photomicrography, pp. 631-632
Roy J. Pence


Book Reviews
----------------, p. 633
Bergey's Manual of Determinative Bacteriology
Robert S. Breed; E. G. D. Murray; A. Parker Hitchens
Review author[s]: William S. Preston
----------------, pp. 633-634
Organizing Scientific Research for War: The Administrative History of the Office of Scientific Research and Development
Irvin Stewart
Review author[s]: Morris C. Leikind
----------------, p. 634
Introduction to Genetics and Cytogenetics
Herbert Parkes Riley
Review author[s]: W. Ralph Singleton


Scientific Book Register, p. 634

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Previous Issue: New Series, Vol. 107, No. 2789, Jun. 11, 1948
Next Issue: New Series, Vol. 107, No. 2791, Jun. 25, 1948


Front Matter (2 pp.)
The Fifth Anniversary of Paricutin, pp. 635-637
Frederick H. Pough

Experimental Research into Psychosomatic Phenomena in Medicine, pp. 637-639
Stewart Wolf


Obituary
George Grant MacCurdy: 1863-1947, pp. 639-640
Hugh Hencken


American Association for the Advancement of Science: The Centennial Celebration Washington, D. C. September 13-17, 1948, pp. 641-642
News and Notes, pp. 642-645


Comments and Communications
A Useful Prefix for the Extension of a Systematic Nomenclature for Intact Polycyclic to Related Open-Ring Systems, p. 646
Herbert Jaffe
National Science Foundation--A Peril or a Hope?, pp. 646-647
L. A. DuBridge


Technical Papers
Studies on Hypoproteinemia: III. Lymphoid Hyperplasia and Redistribution of Nitrogen Caused in Mice by Transplanted Tumors (Sarcoma 180 and Breast Adenocarcinoma EO 771), pp. 648-649
F. Homburger
Zeeman Effect and g-Values for Neutral Nitrogen and Oxygen, pp. 649-650
C. C. Kiess; George Shortley
Multicellular Hairs in Gossypium, pp. 650-651
A. S. Heiba
The Relation of Backscattering to Self-Absorption in Routine Beta-Ray Measurements, pp. 651-653
Peter E. Yankwich; John W. Weigl
L-Penicillamine as a Metabolic Antagonist, p. 653
John Eric Wilson; Vincent du Vigneaud


In the Laboratory
Preparation of Standard Films of DDT Crystals for Toxicity Studies, p. 654
Robert L. Patton; D. S. Sarkaria
Simple Preparation of Transparent Scales, pp. 654-655
Helmut M. Haendler
Continuous Recording of Body Temperatures of Mice, pp. 655-656
Sergius Vernet; Katherine F. Metcalf
A Method of Securing Living Mosquitoes to Mounts in Studies of Problems Concerning Flight, p. 656
Marshall Laird


Book Reviews
----------------, p. 657
An Introduction to the Theory of Seismology
K. E. Bullen
Review author[s]: L. Don Leet
----------------, p. 657
A Laboratory Manual of Comparative Vertebrate Embryology
Allyn J. Waterman
Review author[s]: Albert Reissner
----------------, pp. 657-658
Statistical Methods in Research and Production, with Special Reference to the Chemical Industry
Owen L. Davies
Review author[s]: John Mandel


Scientific Book Register, p. 658

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Previous Issue: New Series, Vol. 107, No. 2790, Jun. 18, 1948
Next Issue: New Series, Vol. 108, No. 2792, Jul. 2, 1948


Front Matter (2 pp.)
Science and Security, pp. 659-665
E. U. Condon

Recent Discoveries in the Egyptian Faiyum and Sinai, pp. 666-670
Wendell Phillips


Obituary
Fred Conrad Koch: 1876-1948, pp. 671-672
Martin E. Hanke


American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 673-675
News and Notes, pp. 675-678


Technical Papers
Confirmatory Analysis of the ''Lost'' Italian Varnish, p. 679
Joseph Michelman
An Experimental and Theoretical Approach to the Mechanism of Cocaine Action, pp. 679-681
A. M. Shanes
Loss of Radioactivity from Barium Carbonate Samples, pp. 681-683
Peter E. Yankwich


In the Laboratory
A Piston Recorder for Small Volume Changes, pp. 683-684
Foster N. Martin
Radiation from a Flask Containing Various Amounts of Radioactive Phosphorus, p. 684
Russell F. Cowing; Egilda DeA Micis

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Previous Issue: New Series, Vol. 107, No. 2791, Jun. 25, 1948
Next Issue: New Series, Vol. 108, No. 2793, Jul. 9, 1948


Volume Information (20 pp.)
Front Matter (2 pp.)
Bausch & Lomb Science Scholarship Winners (1 p.)
The History and Ethics of the Use of Human Subjects in Medical Experiments, pp. 1-5
A. C. Ivy

News and Notes, pp. 6-9


Comments and Communications
Angular Correlation of Scattered Annihilation Radiation, pp. 10-11
E. Bleuler; D. Ter Haar
Formation of Itacolumite, pp. 11-12
Alcon C. Copisarow
Effect of the Protein Content of the Diet on the Glomerular Filtration Rate of Young and Adult Rats, p. 12
S. E. Dicker


Technical Papers
Cytogenetic Effects in Corn Exposed to Atomic Bomb Ionizing Radiation at Bikini, pp. 13-15
L. F. Randolph; A. E. Longley; Ching Hsiung Li
Crystalline Human Myoglobin: Some Physicochemical Properties and Chemical Composition, pp. 15-16
Alessandro Rossi-Fanelli
Differential Effects of 2,4-D on Aerobic, Anaerobic, and Facultative Anaerobic Microorganisms, pp. 16-18
Winfield A. Worth; Anne M. McCabe
The Relative Sensitivities of Bacterial Viruses to Intense Sonic Vibration, p. 18
Thomas F. Anderson; Shiela Boggs; Betty C. Winters


In the Laboratory
Three-Dimensional Modeling of Cyclones in Elementary Meteorology, p. 19
Marshall Schalk
Isolation of Crystalline Desoxyribonuclease from Beef Pancreas, pp. 19-20
M. Kunitz
An Improved Method for Mounting Small Insects, pp. 20-21
G. B. Fairchild; Marshall Hertig


Book Reviews
----------------, pp. 21-22
Plants and Environment: A Textbook of Plant Autecology
R. F. Daubenmire
Review author[s]: Paul B. Sears
----------------, p. 22
The Corrosion Bandbook
Herbert H. Uhlig
Review author[s]: Norman Hackerman


Scientific Book Register, p. 22

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Next Issue: New Series, Vol. 108, No. 2793, Jul. 9, 1948



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Previous Issue: New Series, Vol. 108, No. 2792, Jul. 2, 1948
Next Issue: New Series, Vol. 108, No. 2794, Jul. 16, 1948


Front Matter (2 pp.)
Advisory Committee of the First International Poliomyelitis Conference (1 p.)
Bird Migration and the Concept of Continental Drift, pp. 23-30
Albert Wolfson

American Association for the Advancement of Science: The Centennial Celebration--Washington, D.C. September 13-17, 1948, pp. 31-32
News and Notes, pp. 32-36


Comments and Communications
A Revised Proposal for Errors and Emendations in the Rules of Zoological Nomenclature, pp. 37-38
Richard E. Blackwelder; J. Brookes Knight; Curtis W. Sabrosky
Why Some Crop Plants Yield More Than Others, pp. 38-39
O. W. Willcox


Technical Papers
Prolonged Hypnotic States with ''Local Signs'' Induced in Guinea Pigs, pp. 40-41
W. T. Liberson
Anoxic Survival and Diisopropyl Fluorophosphate (DFP), pp. 41-42
Alfred M. Freedman; Harold E. Himwich
The Importance of the Time Element in Feeding of Growing Rats: Experiments with Delayed Supplementation of Protein, pp. 42-43
E. Geiger
Formaldehyde as a Mutagen in Drosophila, p. 43
William D. Kaplan
Metabolism of Small Mammals, with Remarks on the Lower Limit of Mammalian Size, p. 44
Oliver P. Pearson


In the Laboratory
Constriction of the Mid-Thorax as a Means of Reflex Maintenance of Respiration during Barbiturate Narcosis, pp. 45-46
Augustus C. P. Bakos; William L. Howell
A Portable Light for a Dissecting Microscope, p. 46
George Wishart; Thomas H. Stovell

Previous Issue: New Series, Vol. 108, No. 2792, Jul. 2, 1948
Next Issue: New Series, Vol. 108, No. 2794, Jul. 16, 1948



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Previous Issue: New Series, Vol. 108, No. 2793, Jul. 9, 1948
Next Issue: New Series, Vol. 108, No. 2795, Jul. 23, 1948


Front Matter (2 pp.)
Administration Building, U. S. Naval Observatory (1 p.)
Scientist and Politician as Partners: The British Parliamentary and Scientific Committee, pp. 47-50
Hugh Linstead


Obituary
Rollin Thomas Chamberlin: 1881-1948, pp. 50-51
J Harlen Bretz


American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 52-53
News and Notes, pp. 54-56


Comments and Communications
Creation of Mesons by High-Energy Particles, pp. 57-58
D. Ter Haar
The Use of Chemicals to Prevent Molding of Herbarium Specimens, p. 58
Ira J. Condit
The Robert H. Goddard Rocket Project, pp. 58-60
Wallace W. Atwood


Technical Papers
An Unidentified, Filtrable Agent Isolated from the Feces of Children with Paralysis, pp. 61-62
Gilbert Dalldorf; Grace M. Sickles
Human Saliva as a Germination Inhibitor, pp. 62-63
Dvora Yardeni
The Visibility of Moving Objects, pp. 63-64
Elek Ludvigh


In the Laboratory
Methods of Automatic Watering of Plants, p. 65
John G. Seeley
Use of Thin Kidney Slices and Isolated Renal Tubules for Direct Study of Cellular Transport Kinetics, pp. 65-67
Roy P. Forster
Magnetic-Flea Agitating Device for Microtitration, p. 67
C. Lloyd Claff


Book Reviews
----------------, p. 68
Encyclopedia of Vocational Guidance
Oscar J. Kaplan
Review author[s]: Edward J. Stieglitz
----------------, p. 68
Modern Colloids: An Introduction to the Physical Chemistry of Large Molecules and Small Particles
Robert B. Dean
Review author[s]: Ernst A. Hauser


Scientific Book Register, p. 68

Previous Issue: New Series, Vol. 108, No. 2793, Jul. 9, 1948
Next Issue: New Series, Vol. 108, No. 2795, Jul. 23, 1948



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Previous Issue: New Series, Vol. 108, No. 2794, Jul. 16, 1948
Next Issue: New Series, Vol. 108, No. 2796, Jul. 30, 1948


Front Matter (2 pp.)
On the Deck of the Caryn (1 p.)
X-Ray, Electron, and Neutron Diffraction, pp. 69-75
C. G. Shull; E. O. Wollan

American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 76-78
News and Notes, pp. 78-81


Comments and Communications
The Formation of Malignant Tumors in Mice by Deuteron-Bombarded Methylcholanthrene, p. 82
Benjamin F. Barnes; Fred C. Freytag; Warren M. Garrison; Irene Rosenfeld
Deformylation of 3-Formoxy Steroids on Activated Alumina, p. 82
Robert H. Levin; A. Vern McIntosh; George B. Spero
On the Use of Roughage in Rat Diets, pp. 82-83
N. B. Guerrant
The Scientist and Social Issues, p. 83
P. J. Olson


Technical Papers
Insecticidal Activity of 2,2-bis-(2-Chlorothienyl)-1,1,1-Trichloroethane, pp. 84-85
Robert L. Metcalf
A Theory of Herbicidal Action, pp. 85-86
A. S. Crafts
Progesterone in Blood Plasma of the Ovulating Hen, pp. 86-87
Richard M. Fraps; Charles W. Hooker; Thomas R. Forbes
Phosphorylase in Guard Cells, pp. 87-88
H. C. Yin; Y. T. Tung
Inadequacy of Proteolytic Enzyme Inhibition as Explanation for Growth Depression by Lima Bean Protein Fractions, pp. 88-89
A. A. Klose; J. D. Greaves; H. L. Fevold


In the Laboratory
A Device for Obtaining a Continuous Record of Body Temperature from the External Auditory Canal, pp. 90-91
Roger J. Williams; Roy C. Thompson
Use of X-Ray and Electron Diffraction as Methods of Analysis in Biochemical Chromatography, pp. 91-92
C. L. Christ; C. J. Burton; M. C. Botty
The Fumarate Content of Certain Tissues of the Rat as Determined by Partition Chromatography, p. 92
Lawrence M. Marshall; James M. Orten; Arthur H. Smith
Apparatus for Semimicro Electrodialysis, p. 93
Karl F. Urbach; Jerry J. Svarz


Book Reviews
----------------, p. 94
The Science of Plastics: A Comprehensive Source Book Based on the Original Literature for 1942-1946
H. Mark; E. S. Proskauer
Review author[s]: George H. Brother


Scientific Book Register, p. 94

Previous Issue: New Series, Vol. 108, No. 2794, Jul. 16, 1948
Next Issue: New Series, Vol. 108, No. 2796, Jul. 30, 1948



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Previous Issue: New Series, Vol. 108, No. 2795, Jul. 23, 1948
Next Issue: New Series, Vol. 108, No. 2797, Aug. 6, 1948


Front Matter (2 pp.)
Administration Building, Carnegie Institution of Washington (1 p.)
The Chromosomes and Relationships of Metasequoia and Sequoia, pp. 95-98
G. L. Stebbins

American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, p. 99
News and Notes, pp. 100-106


Comments and Communications
The Structure of Antigen Films and Long-Range Forces, pp. 107-108
Fred Karush; Benjamin M. Siegel
Research and the Geographic Factor, pp. 108-109
Fred A. Mettler


Technical Papers
Photosynthetic Studies with Mutant Strains of Chlorella, pp. 110-111
Edwin A. Davis
Fractionation of Amino Acids from Hydrolysates in Nonaqueous Systems, pp. 111-112
E. V. McCollum; Agatha A. Rider
The Control of Grass Weeds in Sugar-Cane Fields in Puerto Rico, pp. 112-113
J. A. B. Nolla
Demonstration of Reducing Enzyme Systems in Neoplasms and Living Mammalian Tissues by Triphenyltetrazolium Chloride, pp. 113-115
Francis H. Straus; Nicholas D. Cheronis; Elizabeth Straus
Palynological Studies at Sodon Lake: I. Size-Frequency Study of Fossil Spruce Pollen, pp. 115-117
Stanley A. Cain
Inhibition of Glycolysis in Vitro by Impure Penicillin, pp. 117-118
Ernest Kun


In the Laboratory
Benzene-Ether Extracted Rabies Vaccine, pp. 118-119
John T. Wright; J. Frederick Bell; Karl Habel
A Constant-Temperature Micromanipulation Chamber, pp. 119-121
Kenneth M. Richter
The Use of Thionyl Chloride in the Preparation of Schiff's Reagent, pp. 121-122
James D. Barger; Edward D. DeLamater
Plant Virus for Electron Microscopy, p. 122
James Johnson

Previous Issue: New Series, Vol. 108, No. 2795, Jul. 23, 1948
Next Issue: New Series, Vol. 108, No. 2797, Aug. 6, 1948



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Previous Issue: New Series, Vol. 108, No. 2796, Jul. 30, 1948
Next Issue: New Series, Vol. 108, No. 2798, Aug. 13, 1948


Front Matter (2 pp.)
The Library of Congress (1 p.)
Ecological Applications of Lansing's Physiological Work on Longevity in Rotatoria, pp. 123-126
W. T. Edmondson


Obituary
Reid Hunt: 1870-1948, p. 127
G. Philip Grabfield


American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 128-130
News and Notes, pp. 130-133


Comments and Communications
Vitamin B12, a Cobalt Complex, p. 134
Edward L. Rickes; Norman G. Brink; Frank R. Koniuszy; Thomas R. Wood; Karl Folkers
A Laboratory Test for the Virus of Poliomyelitis, pp. 134-135
Pierre R. Lepine
Facts and Theories about Sympathins, p. 135
Z. M. Bacq
Facts and Theories about Sympathins, p. 135
Z. M. Bacq


Technical Papers
A Synthesis of Benzylpenillic Acid, pp. 136-137
Robert W. Holley; Frederick H. Carpenter; Arthur H. Livermore; Vincent Du Vigneaud
Atrophy of Ovaries Transplanted to the Spleen in Unilaterally Castrated Rats; Proliferative Changes Following Subsequent Removal of Intact Ovary, pp. 137-138
Gerson R. Biskind; Morton S. Biskind
Effect of Ryanodine on the Oxygen Consumption of Periplaneta americana, pp. 138-139
Charles C. Hassett
A New Method of Reporting Data on Reproduction and Lactation in the Mouse, pp. 139-140
Leonora Mirone; Frank P. Panzarella; Leopold R. Cerecedo


In the Laboratory
A Staining Procedure for the Study of Insect Musculature, pp. 141-142
Sol Kramer
A Practical Method for the Illumination of Biological Material with Ultraviolet Rays, pp. 142-143
Barney V. Pisha
A New Tool for Infrared Studies, p. 143
René Bailly


Book Reviews
----------------, p. 144
Preparation and Characteristics of Solid Luminescent Materials
Gorton R. Fonda; Frederick Seitz
Review author[s]: Hubert M. James


Scientific Book Register, p. 144

Previous Issue: New Series, Vol. 108, No. 2796, Jul. 30, 1948
Next Issue: New Series, Vol. 108, No. 2798, Aug. 13, 1948



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Science, New Series, Vol. 108, No. 2798, Aug. 13, 1948


Previous Issue: New Series, Vol. 108, No. 2797, Aug. 6, 1948
Next Issue: New Series, Vol. 108, No. 2799, Aug. 20, 1948


Front Matter (2 pp.)
The National Bureau of Standards (1 p.)
Science in the Universities, pp. 145-148
William H. Taliaferro

Royal Society Scientific Information Conference, pp. 148-151
Ralph R. Shaw

American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 152-153
News and Notes, pp. 153-155


Comments and Communications
Important Advances in Zoological Nomenclature Achieved at 13th International Congress of Zoology, pp. 156-157
Francis Hemming
Water at -72° C, pp. 157-158
John J. Heilemann; N. Ernest Dorsey; Henri Bader
Low-Temperature Spectroscopy of Biological Compounds, p. 158
Engelbert Broda
On the Purification of Rabies Vaccine, p. 158
D. L. Harris


Technical Papers
Color Adaptation to Stimuli of Different Spectral Composition but Equal Tristimulus Values, pp. 159-160
Jozef Cohen
Chloromycetin in the Treatment of Scrub Typhus, pp. 160-161
Joseph E. Smadel; Theodore E. Woodward; Herbert L. Ley; Cornelius B. Philip; Robert Traub; R. Lewthwaite; S. R. Savoor
Effect of Cations upon Recovery of the Guinea Pig Gut from Inhibition by Antihistaminics, pp. 162-163
M. Rocha e Silva; Wilson T. Beraldo
Stubble Mulch Studies: Effect of Sweetclover Extract on Corn Germination, p. 163
T. M. McCalla; F. L. Duley


In the Laboratory
Dialysis of Protein Solutions for Electrophoresis, pp. 164-166
Miriam Reiner; Richard L. Fenichel
A Simple Aid for the Cannulation of Small Blood Vessels, p. 166
Erwin Haas; Harry Goldblatt

Previous Issue: New Series, Vol. 108, No. 2797, Aug. 6, 1948
Next Issue: New Series, Vol. 108, No. 2799, Aug. 20, 1948



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Previous Issue: New Series, Vol. 108, No. 2798, Aug. 13, 1948
Next Issue: New Series, Vol. 108, No. 2800, Aug. 27, 1948


Front Matter (2 pp.)
The Naval Research Laboratory (1 p.)
Contemporary Neutron Physics, pp. 167-176
Arthur H. Snell

American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 177-178
News and Notes, pp. 179-182


Comments and Communications
Depth of Field in Microscope Objectives, p. 183
W. Marquette
Surface Electrodes for Recording Bioelectric Potentials, p. 183
John L. Kennedy; Roland C. Travis


Technical Papers
Some Mechanisms for the Fixation of Uranium in Certain Sediments, pp. 184-185
A. F. Frederickson
Penicillin Blood and Milk Concentrations in the Normal Cow Following Parenteral Administration, pp. 185-187
Mark Welsh; Peter H. Langer; Robert L. Burkhart; Charles R. Schroeder
Variations in Total Counts of P32 and I131 for Dishes of Different Atomic Number, p. 187
Russell F. Cowing; Egilda DeAmicis
Modification of Mitosis by Chemicals, p. 188
James R. Meyer
On the Nature of the Interaction between Actomyosin and ATP, pp. 188-190
William King Jordan; Gerald Oster


In the Laboratory
Modification of the Kardos Shadow Experiment for Demonstrations of Color Mixing, pp. 190-191
C. W. Crannell
Recent Procedures for the Study of Three-Dimensional Shapes of Resting Cells, and a New Method for the Shape Study of Cells in Division, pp. 191-192
Thelma J. Flint; Edwin B. Matzke
An Improved Moist Chamber Slide for Use in Micromanipulation, p. 192
Kenneth M. Richter

Previous Issue: New Series, Vol. 108, No. 2798, Aug. 13, 1948
Next Issue: New Series, Vol. 108, No. 2800, Aug. 27, 1948



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Previous Issue: New Series, Vol. 108, No. 2799, Aug. 20, 1948
Next Issue: New Series, Vol. 108, No. 2801, Sep. 3, 1948


Front Matter (2 pp.)
National Headquarters, American Chemical Society (1 p.)
The Climate of the Arctic as Viewed by the Explorer and the Meteorologist, pp. 193-201
William Herbert Hobbs

News and Notes, pp. 201-204
American Association for the Advancement of Science: The Centennial -- Washington, D. C. September 13-17, 1948, pp. 205-206


Technical Papers
The Dreywood Anthrone Reaction as Affected by Carbohydrate Structure, p. 207
Louis Sattler; F. W. Zerban
Inhibition of Hair Growth by the Percutaneous Application of Certain Adrenal Cortical Preparations, pp. 207-209
Wayne L. Whitaker; Burton L. Baker
Effect of 2,4-Dichlorophenoxyacetic Acid on Root Development in Bean Cotyledons, p. 209
Ernest K. Akamine
Ascorbic Acid Therapy of Pteroylglutamic Acid-Deficient Rats, pp. 210-211
B. Connor Johnson; Ann S. Dana
The Reducing Properties of Serum from Subjects with Malignant Disease, p. 211
William C. Stadie


In the Laboratory
Studies on an Artificial Kidney: I. Preliminary Results with a New Type of Continuous Dialyzer, pp. 212-213
Leonard T. Skeggs; Jack R. Leonards
Sensitivity of the Ninhydrin Reaction in Paper Partition Chromatography, pp. 213-214
John J. Pratt; Jacques L. Auclair
A Simple Method of Measuring the Surface Area of Small Objects of Irregular Shape, pp. 214-215
Irving Zeidman


Book Reviews
----------------, p. 216
Essentials of Pharmacology
Frances K. Oldham; F. E. Kelsey; E. M. K. Geiling
Review author[s]: Paul K. Smith
----------------, p. 216
Frequency Modulation
Alfred N. Goldsmith
Review author[s]: F. V. Hunt

Previous Issue: New Series, Vol. 108, No. 2799, Aug. 20, 1948
Next Issue: New Series, Vol. 108, No. 2801, Sep. 3, 1948



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Previous Issue: New Series, Vol. 108, No. 2800, Aug. 27, 1948
Next Issue: New Series, Vol. 108, No. 2802, Sep. 10, 1948


Front Matter (2 pp.)
Past Presidents L. O. Howard (1920) and L. H. Bailey (1926) (1 p.)
The American Association for the Advancement of Science: A Brief Historical Sketch, pp. 217-218
F. R. Moulton

Greetings from the British Association, p. 219
Henry Tizard; E. F. Hindle; Richard Southwell

The AAAS on the Pacific Slope, pp. 220-223
Robert C. Miller

The Southwestern Division of the AAAS, pp. 224-226
Frank E. E. Germann

The American Journal of Science, 1818-1948, pp. 227-229
Edmund W. Sinnott

The Progress of Physics from 1848 to 1948, pp. 230-233
Robert A. Millikan

The National Academy of Sciences and the National Research Council, pp. 234-238
Raymund L. Zwemer

The Rise of Science Understanding, pp. 239-246
Watson Davis

Science and Life, pp. 247-248
Ritchie Calder

Eighth International Congress of Genetics, pp. 249-251
M. Demerec

News and Notes, pp. 251-254
American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 255-264


Book Reviews
----------------, p. 265
Elsevier's Encyclopaedia of Organic Chemistry. (Vol. 13, Tricyclic compounds; Series III, Carboisocyclic compounds.)
E. Josephy; F. Radt
Review author[s]: Roger Adams
----------------, pp. 265-266
James McKeen Cattell, Man of Science. Vol. I: Psychological Research; Vol. II: Addresses and Formal Papers
A. T. Poffenberger
Review author[s]: Carl E. Seashore

Previous Issue: New Series, Vol. 108, No. 2800, Aug. 27, 1948
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Previous Issue: New Series, Vol. 108, No. 2801, Sep. 3, 1948
Next Issue: New Series, Vol. 108, No. 2803, Sep. 17, 1948


The Maintenance of Scientific Proficiency in Nonacademic Research Laboratories, pp. 267-272
Leonard B. Loeb

American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 273-277


Comments and Communications
Anti-Rh Pseudoagglutinins in IV-6 Human Plasma Fraction, p. 278
George B. Gordon; Herbert A. Weitzner; Robert D. Barnard
Recent Developments in Weed Control, pp. 278-279
Francis E. Hance
The American-Soviet Science Society, p. 279
L. C. Dunn; Harlow Shapley; Alice Hamilton; Leo Loeb; Duncan A. MacInnes
On the Number of Genes in Man, pp. 279-280
J. N. Spuhler
On the Solubility of Fibrin Clots, p. 280
K. Laki; L. Lóránd


Technical Papers
The Antirheumatic Effect of Sodium Gentisate, p. 281
Karl Meyer; Charles Ragan
Does Glutamic Acid Have Any Effect on Learning?, pp. 281-283
Eliot Stellar; William D. McElroy
Effect of Heparin and Dicoumarol on Sludge Formation, pp. 283-284
Harold Laufman; Wayne B. Martin; Carlos Tanturi
An Experiment on Human Vitamin B6 Deprivation, pp. 284-286
W. W. Hawkins; James Barsky
The Utilization of Carbon Dioxide by the Mature Rat in the Formation of Fatty Acids, p. 286
Jack Schubert; Wallace D. Armstrong


In the Laboratory
The Radio Inductograph--A Device for Recording Physiological Activity in Unrestrained Animals, pp. 287-288
J. L. Fuller; T. M. Gordon
Design of a Collapsible, Lightweight ``Iron Lung'' Respirator, pp. 288-289
Harold Lamport; Ralph D. Eichhorn


Book Reviews
----------------, p. 290
Duftgelenkte Bienen im Dienste der Landwirtschaft und Imkerei
Karl Von Frisch
Review author[s]: Arthur D. Hasler
----------------, p. 290
Small-Fruit Culture: A Text for Instruction and Reference Work and a Guide for Field Practice
James S. Shoemaker
Review author[s]: Franklin A. Gilbert

Previous Issue: New Series, Vol. 108, No. 2801, Sep. 3, 1948
Next Issue: New Series, Vol. 108, No. 2803, Sep. 17, 1948



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Previous Issue: New Series, Vol. 108, No. 2802, Sep. 10, 1948
Next Issue: New Series, Vol. 108, No. 2804, Sep. 24, 1948


Front Matter (2 pp.)
F-86 -- The Air Force Speediest Fighter Plane (1 p.)
Physics in Central and Southern Europe, pp. 291-294
Robert L. Platzman


Obituary
Theodore Dru Alison Cockerell 1866-1948, pp. 295-296
Herbert F. Schwarz


News and Notes, pp. 296-301


Comments and Communications
Starch Blue, p. 302
Naomi C. Turner
Preparation of Succindialdehyde and Its Derivatives from Furan, p. 302
Jørgen Fakstorp; Dolores Raleigh; L. E. Schniepp
Sex and Vigor in Populus, pp. 302-303
Scott S. Pauley
Weed Control--A Liquid Concentrate of the Isopropyl Ester of 2,4-D Miscible with Oil or Water in Any Proportion, p. 303
Francis E. Hance


Technical Papers
The Path of Carbon in Photosynthesis: II. Amino Acids, p. 304
W. Stepka; A. A. Benson; M. Calvin
Significance of Distribution of Fluorescein in Sarcoma 180, pp. 304-305
Daniel M. Shapiro; B. H. Landing
Physiological Adjustments in Chloride Balance of the Goldfish, pp. 305-307
Dallas K. Meyer
Transmission by Leaf Hoppers of the Virus Causing Pholem Necrosis of American Elm, pp. 307-308
W. L. Baker
The Mechanism of Cysteine and Glutathione Protection against Alloxan Diabetes, pp. 308-309
Arnold Lazarow; John W. Patterson; Stanley Levey


In the Laboratory
Adaptation of Selsyn Transmitters for Obtaining Isometric Myographs on the Cathode-Ray Oscilloscope, pp. 310-311
Robert L. Bowman
Effect of Calcium Chloride on the Preparation of Extracts of H. pertussis, p. 311
Jean I. Burrell; K. C. Robbins; Louis Pillemer


Scientific Book Register, p. 312

Previous Issue: New Series, Vol. 108, No. 2802, Sep. 10, 1948
Next Issue: New Series, Vol. 108, No. 2804, Sep. 24, 1948



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Previous Issue: New Series, Vol. 108, No. 2803, Sep. 17, 1948
Next Issue: New Series, Vol. 108, No. 2805, Oct. 1, 1948


Front Matter (2 pp.)
Elvin C. Stakman: President of the AAAS, 1949 (1 p.)
Address of the President of the United States, pp. 313-314
The One World of Stars, pp. 315-321
Harlow Shapley

News and Notes, pp. 322-326


Technical Papers
The Quantitative Theory of Autoradiography Illustrated through Experiments with P32 in the Chick Embryo, pp. 327-328
Herman Branson; Louis A. Hansborough
Crystalline Serotonin, pp. 329-330
Maurice M. Rapport; Arda Alden Green; Irvine H. Page
The Action of Ryanodine on the Contractile Process in Striated Muscle, pp. 330-332
G. A. Edwards; E. A. Weiant; A. G. Slocombe; K. D. Roeder
The Homing Tendency of Shad, pp. 332-333
Edgar H. Hollis
Effect of Antiserum and Prolonged Cultivation on the Agglutinative Characteristics of a Type I Meningococcus, pp. 334-335
Dorothy Neuhof Naiman
The Inactivation of Invertase by Tyrosinase, pp. 335-336
Irwin W. Sizer
Mammary Carcinoma in Female Rats Fed 2-Acetylaminofluorene, pp. 336-337
R. W. Engel; D. H. Copeland


In the Laboratory
A Simple Micro-Beaker for Use with the Beckman pH Meter (Model G), pp. 338-339
Victor H. Dietz
A Rapid Method for Preparing DDT in the Laboratory, pp. 339-340
Joseph M. Ginsburg
Radiocardiography: A New Method for Studying the Blood Flow through the Chambers of the Heart in Human Beings, pp. 340-341
Myron Prinzmetal; Eliot Corday; H. C. Bergman; Lois Schwartz; Ramon J. Spritzler


Book Reviews
----------------, p. 342
Principles of Jet Propulsion and Gas Turbines
M. J. Zucrow
Review author[s]: Howard S. Seifert
----------------, p. 342
Advances in Military Medicine
C. Andrus
Review author[s]: Morris C. Leikind

Previous Issue: New Series, Vol. 108, No. 2803, Sep. 17, 1948
Next Issue: New Series, Vol. 108, No. 2805, Oct. 1, 1948



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Previous Issue: New Series, Vol. 108, No. 2804, Sep. 24, 1948
Next Issue: New Series, Vol. 108, No. 2806, Oct. 8, 1948


Front Matter (2 pp.)
Phillips University Students at AAAS Meetings (1 p.)
Charting the Sea of Brain Waves, pp. 343-347
Herbert H. Jasper

News and Notes, pp. 348-353


Comments and Communications
Bursts of Solar Noise at 45 Mc Accompanying the Large Sunspots of 1947, pp. 354-355
Harlan T. Stetson
Beta-Glucuronidase, pp. 355-356
Lester D. Odell; William H. Fishman; Walter R. Hepner
More about Ridgway's Color Standards and Color Nomenclature, p. 356
John T. Zimmer
A Method for Recovery of Platinum from Potassium Iodoplatinate, p. 356
Martha K. Roane


Technical Papers
A Qualitative Analysis of Amino Acids in Pollen Collected by Bees, pp. 357-358
Jacques L. Auclair; Cecil A. Jamieson
The Formation of Monoiodotyrosine from Radioiodine in the Thyroid of Rat and Man, pp. 358-359
Kay Fink; R. M. Fink
Some Factors Involved in Oxygen Evolution from Triturated Spinach Leaves, pp. 359-360
Frank P. Boyle
The Organic Acid Content of Various Samples of Raw Cotton Fiber in Relation to Ash Alkalinity and Leaching by Rain, pp. 360-361
Elizabeth R. McCall; Vidabelle O. Cirino; Samuel M. Stark; John D. Guthrie


In the Laboratory
Determination of Exposure Time in Color Photomicrography, pp. 362-363
Robert M. Weiss; Charles R. Noback
A Simple Electronic Electrolytic Drop Recorder, pp. 363-364
David F. Marsh; C. B. Seibert
Electrically Heated Wax Pencil for Sealing Inoculated Eggs, pp. 364-365
N. A. Labzoffsky


Book Reviews
----------------, p. 365
Comparative Physiology
Bradley T. Scheer
Review author[s]: Samuel Gelfan
----------------, pp. 365-366
Astronomy: A Textbook for Colleges
William Lee Kennon
Review author[s]: Paul Herget
----------------, p. 366
Synthetische Methoden der organischen Chemie
W. Theilheimer
Review author[s]: M. A. Spielman


Scientific Book Register, p. 366

Previous Issue: New Series, Vol. 108, No. 2804, Sep. 24, 1948
Next Issue: New Series, Vol. 108, No. 2806, Oct. 8, 1948



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Science, New Series, Vol. 108, No. 2806, Oct. 8, 1948


Previous Issue: New Series, Vol. 108, No. 2805, Oct. 1, 1948
Next Issue: New Series, Vol. 108, No. 2807, Oct. 15, 1948


Front Matter (2 pp.)
Cornell's New Laboratory of Nuclear Studies (1 p.)
Natural Resources Problems in Japan, pp. 367-372
Colonel Hubert G. Schenck

News and Notes, pp. 373-376


Comments and Communications
Immunologic, pp. 377-378
M. S. Marshall
A Comparison of the Total Leucocyte Count in the Heart Blood and Peripheral Blood of the Rat, pp. 378-379
John Nichols; A. T. Miller
Appeal for Scientific Literature for Austria, pp. 379-380
L. Patrick Moore
On the Recent Frilled Shark Catch, p. 380
Elmer R. Noble
Vitamin A Content of the Liver of the Frilled Shark, p. 380
Willard L. McRary


Technical Papers
Adrenal Changes in Animals Bearing Transplanted Tumors, pp. 381-382
Kenneth Savard
Use of Streptomycin-Dependent Strains of Bacteria for Demonstrating the Ability of Microorganisms to Produce Streptomycin, pp. 382-383
Warren P. Iverson; Selman A. Waksman
Precipitin Reactions in Experimental Histoplasmosis and Blastomycosis, pp. 383-385
Anne Louise Pates
The Occurrence of Temperatures Unusual to American Lakes, pp. 385-386
Curtis L. Newcombe; John V. Slater
On the Origin of Virus Phosphorus, pp. 386-387
Frank W. Putnam; Lloyd M. Kozloff
Hydraulic Device for Raising and Lowering Mercury in Gas Analyzers, pp. 388-389
Howard F. Brubach; Norman H. Smith
Heteroplastic Grafts, p. 389
Louis G. Nickell
A Photoelectric Drop Counter, p. 390
James A. Riley
Preparation of Acellular Homogenates from Muscle Samples, pp. 390-391
William E. Poel
A Microextraction Procedure for Phenol Determination, pp. 391-393
R. H. DeMeio
A Convenient Apparatus for Recording the Blood Pressure of Small Animals, p. 393
David F. Marsh


Book Reviews
----------------, p. 394
Centennial Symposia, December, 1946
Review author[s]: Armin J. Deutsch
----------------, p. 394
Ophthalmology in the War Years
Meyer Wiener
Review author[s]: John H. Dunnington

Previous Issue: New Series, Vol. 108, No. 2805, Oct. 1, 1948
Next Issue: New Series, Vol. 108, No. 2807, Oct. 15, 1948



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Science, New Series, Vol. 108, No. 2807, Oct. 15, 1948


Previous Issue: New Series, Vol. 108, No. 2806, Oct. 8, 1948
Next Issue: New Series, Vol. 108, No. 2808, Oct. 22, 1948


Front Matter (2 pp.)
Karl T. Compton: Chairman, Research and Development Board (1 p.)
Recent Advances in Color Vision, pp. 395-404
H. Hartridge

News and Notes, pp. 405-409


Comments and Communications
Denaturation of Urease without Inactivation, p. 410
James B. Sumner
Human Saliva as a Germination Inhibitor, p. 410
M. Kramer; K. Silberschmidt
Absence of Protective Action of Rutin in Anaphylactic and Histamine Shock, pp. 410-411
L. W. Roth; I. M. Shepperd
Red Skin Color of Bliss Triumph Potatoes Increased by the Use of Synthetic Plant Hormones, p. 411
Jess L. Fults; L. A. Schaal
On Olfaction and Infrared Radiation Theories, pp. 411-412
C. W. Young; D. E. Pletcher; N. Wright
The Curare-Like Action of Thiamine, p. 412
Jay A. Smith; Piero P. Foa; Harriet R. Weinstein


Technical Papers
Body Temperature, Blood Pressure, and Hypothalamus, pp. 413-415
Simon Rodbard
Indole-3-Acetic Acid and Flowering, pp. 415-416
Marion Green; Harry J. Fuller
Observation on the Mechanism of Action of Dicoumarol, pp. 416-417
Robert L. MacMillan
Isolation of Pure Vitamin A2, pp. 417-419
Edgar M. Shantz
Some Quantitative Aspects of the Feulgen Reaction for Desoxyribose Nucleic Acid, pp. 419-420
M. A. Lessler
Photomicrography at Your Convenience, pp. 420-421
R. B. Stevens; J. Herbert Taylor
Use of the Dropping-Mercury Electrode for the Continuous Measurement of Dissolved Oxygen in Flowing Water, pp. 421-422
W. A. Spoor

Previous Issue: New Series, Vol. 108, No. 2806, Oct. 8, 1948
Next Issue: New Series, Vol. 108, No. 2808, Oct. 22, 1948



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Science, New Series, Vol. 108, No. 2808, Oct. 22, 1948


Previous Issue: New Series, Vol. 108, No. 2807, Oct. 15, 1948
Next Issue: New Series, Vol. 108, No. 2809, Oct. 29, 1948


Front Matter (2 pp.)
Clinical Center, National Institutes of Health (1 p.)
New Light on the Peoples of Micronesia, pp. 423-425
George Peter Murdock

Food Prices in Palo Alto, pp. 425-426
J. Murray Luck

Diversity of Amino Acids in Legumes According to the Soil Fertility, pp. 426-428
V. L. Sheldon; Wm. G. Blue; Wm. A. Albrecht

AAAS Centenary--A Preliminary Report, pp. 428-430
J. M. Hutzel


Obituary
Arthur Gordon Ruggles: 1875-1947, pp. 430-431
William A. Riley


News and Notes, pp. 431-435


Comments and Communications
Resignation of Professor Muller from Academy of Sciences of the USSR, p. 436
On ``Animal Hypnosis'', pp. 436-437
Robert M. True; W. T. Liberson
The Structure of Actidione, an Antibiotic from Streptomyces griseus, pp. 437-438
E. C. Kornfeld; R. G. Jones
Present Distribution of Medical Research Funds by Governmental Agencies, p. 438
Clarence A. Mills


Technical Papers
Ionic Exchange Equations Derived from Statistical Thermodynamics, pp. 439-440
C. Krishnamoorthy; L. E. Davis; R. Overstreet
Cleavage Patterns Disclose ``Toughness'' of Metals, pp. 440-441
C. A. Zapffe; C. O. Worden; F. K. Landgraf
Deposition of Protein in the Liver Following Intravenous Injection of an Amino Acid Mixture (Hydrolyzed Protein) and Glucose, pp. 441-443
Charles A. Ross; Robert Elman
Radical Reactions with Certain Nitrogen Compounds: The Conversion of Benzene (Toluene, etc.) in Other Compounds at Low Temperature, pp. 443-444
Oskar Baudisch
A Simple Ink Writer for the Mercury Manometer, p. 445
L. H. Anderson
The Demonstration of P32 in Bone by Radioautography, pp. 445-448
Robert S. Siffert
Lipemic Nephrosis in Rats, pp. 448-449
Walter Heymann; Herbert Z. Lund
Effect of Galactose on the Utilization of Fat, pp. 449-450
Curt P. Richter
A Qualitative Chemical Change in Carcinogenesis, pp. 450-454
Christopher Carruthers; V. Suntzeff


Book Reviews
----------------, p. 454
An Outline of Social Psychology
Muzafer Sherif
Review author[s]: Paul R. Farnsworth

Previous Issue: New Series, Vol. 108, No. 2807, Oct. 15, 1948
Next Issue: New Series, Vol. 108, No. 2809, Oct. 29, 1948



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Science, New Series, Vol. 108, No. 2809, Oct. 29, 1948


Previous Issue: New Series, Vol. 108, No. 2808, Oct. 22, 1948
Next Issue: New Series, Vol. 108, No. 2810, Nov. 5, 1948


Front Matter (2 pp.)
Crested Penguins of the Snares Islands (1 p.)
Recent Advances in the Study of the Crystalline State, pp. 455-463
Lawrence Bragg

A New Zealand Expedition of the American Museum of Natural History, pp. 463-464
Robert Cushman Murphy

First International Congress of Physiology and Pathology of Animal Reproduction and of Artificial Insemination, pp. 465-466
Banner Bill Morgan

News and Notes, pp. 466-470


Technical Papers
Studies of the Molybdenum Nutrition of Plants with Radioactive Molybdenum, pp. 471-473
P. R. Stout; W. R. Meagher
Molybdenum Deficiency in Serpentine Barren Soils, pp. 473-475
Richard B. Walker
X Irradiation of the Hypophysectomized Rat, pp. 475-476
H. M. Patt; M. N. Swift; E. B. Tyree; R. L. Straube
The Inhalation of Norisodrine Sulfate Dust, pp. 476-478
L. R. Krasno; M. Grossman; A. C. Ivy
Inhibition of Anaphylactic Shock by Acetylsalicylic Acid, pp. 478-479
Berry Campbell
Effects of 2,4-Dichlorophenoxyacetic Acid on Chicks, pp. 479-480
Melvin K. Bjorn; Henry T. Northen
A New Histological Procedure for Whole Tissue Cultures Grown in Plasma, pp. 480-481
Annabelle Cohen; Charity Waymouth
Removal of the Fertilization Membranes from Large Quantities of Sea-Urchin Eggs, pp. 481-482
P. E. Lindahl; J. Lundin
Electrophrenic Respiration, p. 482
S. J. Sarnoff; E. Hardenbergh; J. L. Whittenberger


Comments and Communications
Precedence of Modern Plant Names over Names Based on Fossils, p. 483
James M. Schopf
A Point Regarding 2,4-D Penetration, p. 483
James H. M. Henderson
Significance of Clearance Variations in the Rat, pp. 483-484
R. W. Lippman
Record of the Occurrence of Physoderma graminis in Canada, p. 484
W. R. Childers
Fisheries Statistics and the past Oyster Production of the Gulf Coast of the United States, pp. 484-485
Gordon Gunter
Some Views on the Phosphorylation Reactions, pp. 485-486
Gennady M. Kosolapoff
Why Vegetation on Watersheds?, pp. 486-487
Chapman Grant


Book Reviews
----------------, p. 487
Microwave Transmission Circuits
George L. Ragan
Review author[s]: R. H. Dicke
----------------, p. 487
Higher Algebra: A Sequel to ``Higher Algebra for Schools.''
W. L. Ferrar
Review author[s]: Ivan Niven


Scientific Book Register, p. 488

Previous Issue: New Series, Vol. 108, No. 2808, Oct. 22, 1948
Next Issue: New Series, Vol. 108, No. 2810, Nov. 5, 1948



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Science, New Series, Vol. 108, No. 2810, Nov. 5, 1948


Previous Issue: New Series, Vol. 108, No. 2809, Oct. 29, 1948
Next Issue: New Series, Vol. 108, No. 2811, Nov. 12, 1948


Oxygen Isotopes in Nature and in the Laboratory, pp. 489-496
Harold C. Urey

News and Notes, pp. 496-500


Technical Papers
The Amino Acid Content of Bacteriophage, p. 501
A. Polson; Ralph W. G. Wyckoff
The Combined Effect of Potassium Iodide and Streptomycin on Established Tuberculosis in Guinea Pigs, pp. 501-502
Edgar Woody; Roy C. Avery
Graphite Bearings for Mechanical Stirrers, pp. 502-503
Henry David Baldridge
Tissue Potassium Determinations, p. 503
David Stone; Sumner Shapiro
Duration of Viability of Neurotropic Viruses in an Experimental Plumbing System Contaminated by Back-Siphonage, pp. 503-505
Joseph Zichis; E. A. Piszczek
Role of Sulfhydryl Compounds in Pigmentation, pp. 505-506
Peter Flesch; Stephen Rothman
Detection of Sulfur-Containing Amino Acids on Paper Chromatograms, pp. 506-507
Herbert M. Winegard; Gerrit Toennies; Richard J. Block
A Brain-Wave ``Correlator'', p. 507
C. W. Goodwin; S. N. Stein
Spontaneous Increase in Potency of Thromboplastin from Acetone-Extracted Brain Tissue, pp. 507-509
Paul M. Aggeler; Tillie B. Leake; John C. Talbot
Standardized Pain Stimulation as Controlled Stress in Physiological Studies of Psychoneurosis, pp. 509-511
R. B. Malmo; C. Shagass; J. F. Davis; R. A. Cleghorn; B. F. Graham; A. Joan Goodman


Comments and Communications
Two New Organic Rhenium Compounds, p. 512
Stewart J. Lloyd; Leon F. Koniz
Statement Recommending the Establishment of an International Biological Control Organization, pp. 512-513
Action Potentials from Single Auditory-Nerve Fibers?, p. 513
Robert Galambos; Hallowell Davis
On Obtaining Books from Germany, p. 513
Genetic and Endocrine Determinants of the Plasma Urate Level, pp. 514-515
Charley J. Smyth; Robert M. Stecher; William Q. Wolfson


Book Reviews
----------------, p. 515
Atomic Energy: Being the Norman Wait Harris Lectures Delivered at Northwestern University
Karl K. Darrow
Review author[s]: R. D. Huntoon
----------------, pp. 515-516
Hemostatic Agents: With Particular Reference to Thrombin, Fibrinogen and Absorbable Cellulose
Walter H. Seegers; Elwood A. Sharp
Review author[s]: L. B. Jaques


Scientific Book Register, p. 516

Previous Issue: New Series, Vol. 108, No. 2809, Oct. 29, 1948
Next Issue: New Series, Vol. 108, No. 2811, Nov. 12, 1948



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Science, New Series, Vol. 108, No. 2811, Nov. 12, 1948


Previous Issue: New Series, Vol. 108, No. 2810, Nov. 5, 1948
Next Issue: New Series, Vol. 108, No. 2812, Nov. 19, 1948


Front Matter (2 pp.)
Visiting Professor Otto H. Warburg (1 p.)
Atomic Energy, pp. 517-521
Eugene P. Wigner

What Is a Map?, pp. 521-522
Eugene Van Cleef

News and Notes, pp. 523-526


Technical Papers
A New Electroencephalogram Associated with Thinking, pp. 527-529
John L. Kennedy; Robert M. Gottsdanker; John C. Armington; Florence E. Gray
Autoradiographs of C14 Incorporated in Individual Blood Cells, pp. 529-531
George A. Boyd; George W. Casarett; Kurt I. Altman; Thomas R. Noonan; Kurt Salomon
Histological Localization of Newly-Formed Desoxyribonucleic Acid, pp. 531-533
C. P. Leblond; C. E. Stevens; R. Bogoroch
Protoanemonin as a Mitotic Inhibitor, p. 533
Ralph O. Erickson
Evidence for the Existence of a Low-Mass Mesotron, pp. 534-535
E. W. Cowan
Measurement of Radiocarbon as CO2 in Geiger-Müller Counters, pp. 535-536
Maxwell Leigh Eidinoff
Reduction of Undesirable By-Effects in Products Treated by Radiation, pp. 536-537
Arno Brasch; Wolfgang Huber
The Viability of Individuals Heterozygous for Recessive Lethals, pp. 538-539
Curt Stern; Edward Novitski
In vivo Iodination of Tissue Protein Following Injection of Elemental Iodine, p. 539
S. B. Barker; H. J. Lipner


Comments and Communications
What is the Pollinating Agent for Hevea brasiliensis?, p. 540
Thomas J. Muzik
Plasma Reduction of Methylene Blue, pp. 540-541
Maurice M. Black
The Varieties, Quantities, and Purities of Stable Isotopes Which Have Been Concentrated Electromagnetically, p. 541
C. P. Keim
Silicone Fluid for Sterilization of Dental Hand Pieces, p. 542
Mary Crowley; F. D. Ostrander
Varves in the Bed of Lake Erie, p. 542
Paul B. Sears


Book Reviews
----------------, p. 543
Handbook of South American Indians. Vol. 3: The Tropical Forest Tribes; Vol. 4: The Circum-Caribbean Tribes
Julian Steward
Review author[s]: J. Alden Mason
----------------, pp. 543-544
Radio Aids to Navigation
R. A. Smith
Review author[s]: G. H. Fett
----------------, p. 544
Encyclopedia of Medical Sources
Emerson Crosby Kelly
Review author[s]: Morris C. Leikind


Scientific Book Register, p. 544

Previous Issue: New Series, Vol. 108, No. 2810, Nov. 5, 1948
Next Issue: New Series, Vol. 108, No. 2812, Nov. 19, 1948



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Science, New Series, Vol. 108, No. 2812, Nov. 19, 1948


Previous Issue: New Series, Vol. 108, No. 2811, Nov. 12, 1948
Next Issue: New Series, Vol. 108, No. 2813, Proceedings Issue: AAAS Centennial, Washington, D.C., September 13-17, 1948, Nov. 26, 1948


Front Matter (2 pp.)
Seismic Exploration--A New Method (1 p.)
Polyelectrolytes, pp. 545-550
Raymond M. Fuoss

University of California African Expedition--Southern Section, pp. 550-552
Charles L. Camp

Triennial Meeting of the International Astronomical Union, pp. 553-554
Harlow Shapley


Technical Papers
Variation Induced by Uranium Nitrate in Corn Smut and the Cultivated Mushroom, pp. 554-555
E. C. Stakman; J. M. Daly; M. L. Gattani; I. Wahl
Changes in the Blood Following Exposure to Gaseous Ammonia, pp. 555-556
Frederic C. Schmidt; Doris C. Vallencourt
Inhibition of Mitotic Poisoning by Meso-Inositol, pp. 556-558
Erwin Chargaff; Robert N. Stewart; Boris Magasanik
Biosynthesis of Radioactive Drugs Using Carbon 14, pp. 558-559
E. M. K. Geiling; F. E. Kelsey; B. J. McIntosh; A. Ganz
A Device for Controlling Humidity in Biosynthesis of Drugs, p. 560
T. E. Kimura
The Production of Unilateral Epileptiform Convulsions from Otherwise Quiescent Foci by the Administration of Benzedrine, pp. 560-561
R. A. Blum; J. S. Blum; K. L. Chow
The Pharmacological Properties of Some 2-Substituted-4-Hydroxymethyl-1,3-Dioxolanes, pp. 561-562
F. M. Berger; V. Boekelheide; D. S. Tarbell
A New Treatment of Viscosimetric Data, pp. 562-563
Henry R. Jacobs
Effect of Chemical Treatment Prior to Storage on Viability and Growth of Cottonseed, pp. 563-564
M. G. Lambou; Gladys S. King; M. Z. Condon


Comments and Communications
Influence of Human Saliva and Blood Serum on Germination and Root Growth, p. 565
David I. Macht
A New Organic Uranium Compound, p. 565
Stewart J. Lloyd; Mason C. Cleere
Dieyema paradoxum Von Kölliker, 1849, pp. 565-566
Horace W. Stunkard
Enpony and Enchresy, p. 566
Arne Ölander


Obituary
Alfred Church Lane: 1863-1948, pp. 567-568
Leonard Carmichael


Book Reviews
----------------, p. 568
Insects of Hawaii
Elwood C. Zimmerman
Review author[s]: Ernst Mayr
----------------, p. 568
Proteins and Life
M. V. Tracey
Review author[s]: H. B. Vickery


News and Notes, pp. 569-572

Previous Issue: New Series, Vol. 108, No. 2811, Nov. 12, 1948
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Science, New Series, Vol. 108, No. 2813, Proceedings Issue: AAAS Centennial, Washington, D.C., September 13-17, 1948, Nov. 26, 1948


Previous Issue: New Series, Vol. 108, No. 2812, Nov. 19, 1948
Next Issue: New Series, Vol. 108, No. 2814, Dec. 3, 1948


Front Matter (2 pp.)
The AAAS and Organized American Science, pp. 573-577
F. R. Moulton

The Membership Campaign, p. 578
John M. Hutzel

Abstracts of Papers Presented at the AAAS Centennial Celebration, pp. 579-605


Comments and Communications
Adventures in Mailing Science, pp. 606-607
F. R. Moulton
Australian Sod Fly Introduced into California (Diptera: Stratiomyidae), p. 607
Edward L. Kessel
If This Be Treason--, pp. 607-608
Neil E. Stevens
Quantitative Estimation of Amino Acids on Paper Chromatograms, pp. 608-609
Richard J. Block
Parasites to Aid in the Control of the Sweet Clover Weevil, p. 609
J. A. Munro; R. L. Post


News and Notes, pp. 610-614

Previous Issue: New Series, Vol. 108, No. 2812, Nov. 19, 1948
Next Issue: New Series, Vol. 108, No. 2814, Dec. 3, 1948



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Science, New Series, Vol. 108, No. 2814, Dec. 3, 1948


Previous Issue: New Series, Vol. 108, No. 2813, Proceedings Issue: AAAS Centennial, Washington, D.C., September 13-17, 1948, Nov. 26, 1948
Next Issue: New Series, Vol. 108, No. 2815, Dec. 10, 1948


Front Matter (2 pp.)
Prehistoric Eskimo Dwelling, Baffin Island (1 p.)
The Effects of Changes in Quantity, Combination, and Position of Genes, pp. 615-621
Curt Stern

Foreword from Vernalization and Photoperiodism, pp. 621-623
Kenneth V. Thimann


Technical Papers
Mechanical Transmission of a Virus Disease to Cucumber from Sour Cherry, pp. 623-624
J. Duain Moore; J. S. Boyle; G. W. Keitt
Crystallization of Hypophyseal Growth Hormone, pp. 624-625
Choh Hao Li; Herbert M. Evans; Miriam E. Simpson
Six-Segment Head Regenerates in an Earthworm, Eisenia foetida (Savigny) 1826, pp. 625-626
Esther Carpenter
Liver Tumors in Rats Fed Thiourea or Thioacetamide, pp. 626-628
O. Garth Fitzhugh; Arthur A. Nelson
Desoxypentosenuclease in Yeast and Specific Nature of Its Cellular Regulation, pp. 628-629
Stephen Zamenhof; Erwin Chargaff
Effect of Flavonoids (Vitamin P) on Mortality from Total Body Roentgen Irradiation, pp. 629-630
William G. Clark; Rex P. Uncapher; Mary L. Jordan
Urinary Flow, Excretion of Solutes, and Osmotic Work during Diuresis of Solute Loading in Hydropenia in Man, pp. 630-632
S. Rapoport; William A. Brodsky; Clark D. West; Bruce Mackler
Effects of the Antithyrotoxic Factor of Liver on Growth and Survival of Immature Rats Fed Massive Doses of Thyroactive Materials, pp. 632-633
B. H. Ershoff; H. B. McWilliams


Comments and Communications
Cytochrome C Labeled with Radioactive Iron, p. 634
Helmut Beinert; Heinz Maier-Leibnitz
Comparative Data on Vitamin B12 from Liver and from a New Source, Streptomyces griseus, pp. 634-635
Edward L. Rickes; Norman G. Brink; Frank R. Koniuszy; Thomas R. Wood; Karl Folkers
Cultivation is Necessary, p. 635
Jackson B. Hester; Robert L. Isaacs
``Serology'' and ``Immunology'', p. 635
Alan Boyden


Book Reviews
----------------, p. 636
Man and His Works: The Science of Cultural Anthropology
Melville J. Herskovits
Review author[s]: George P. Murdock
----------------, p. 636
Methods in Medical Research
Van R. Potter
Review author[s]: A. J. Carlson
----------------, pp. 636-637
Foundations of Psychology
Edwin Garrigues Boring; Herbert Sidney Langfeld; Harry Porter Weld
Review author[s]: Ernest R. Hilgard


Scientific Book Register, p. 637
News and Notes, pp. 638-642

Previous Issue: New Series, Vol. 108, No. 2813, Proceedings Issue: AAAS Centennial, Washington, D.C., September 13-17, 1948, Nov. 26, 1948
Next Issue: New Series, Vol. 108, No. 2815, Dec. 10, 1948



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Science, New Series, Vol. 108, No. 2815, Dec. 10, 1948


Previous Issue: New Series, Vol. 108, No. 2814, Dec. 3, 1948
Next Issue: New Series, Vol. 108, No. 2816, Dec. 17, 1948


Front Matter (2 pp.)
Proposed Science Building Duluth Branch, University of Minnesota (1 p.)
The Circulation of the Upper Troposphere and Lower Stratosphere, pp. 643-652
C. G. Rossby; H. C. Willett


Technical Papers
Some Experiments in the Freezing of Water, pp. 652-654
Robert Smith-Johannsen
Internal Suberization of Plant Tissues, pp. 654-655
Flora Murray Scott
Effect of Coconut Milk on the Growth of Explants from Carrot Root, pp. 655-657
S. M. Caplin; F. C. Steward
An Effective Depilatory Formula for Use on Laboratory Animals, p. 657
Isadore Pitesky; Jules H. Last
The Effect of Hypertensin on the Inactivation of Oxytocin by the Serum of Pregnant Women, pp. 658-659
H. Croxatto; R. Croxatto; M. Reyes
The Effect of Browning on the Essential Amino Acid Content of Soy Globulin, pp. 659-660
A. R. Patton; E. G. Hill; E. M. Foreman
Dyes as Microchemical Indicators of a New Immunity Phenomenon Affecting a Protozoon Parasite (Toxoplasma), pp. 660-663
Albert B. Sabin; Harry A. Feldman


Comments and Communications
Auxin and Flower Initiation, p. 664
A. C. Leopold; K. V. Thimann
A Note on the Fungicidal Property of Actidione, p. 664
H. B. Tukey
Propagation of Metasequoia by Juvenile Cuttings, pp. 664-665
John L. Creech
Science and Social Problems, pp. 665-666
R. O. Bender
The Effects of Allyl Isothiocyanate Compared with Ultraviolet Radiation, p. 666
Harold E. Finley; Edwin S. Shirley; James W. Wanza
The Earliest Record (Ca. 195 A. D.) of Fishing with the Hand, p. 666
E. W. Gudger


Obituary
Sumner Cushing Brooks: 1888-1948, pp. 667-668
L. V. Heilbrunn


News and Notes, pp. 668-672
Correction, p. 672

Previous Issue: New Series, Vol. 108, No. 2814, Dec. 3, 1948
Next Issue: New Series, Vol. 108, No. 2816, Dec. 17, 1948



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Science, New Series, Vol. 108, No. 2816, Dec. 17, 1948


Previous Issue: New Series, Vol. 108, No. 2815, Dec. 10, 1948
Next Issue: New Series, Vol. 108, No. 2817, Dec. 24, 1948


Front Matter (2 pp.)
The Michelson Laboratory at Inyokern (1 p.)
The Atomic Nucleus, a New World to Conquer, pp. 673-675
I. I. Rabi

The National Academy of Sciences: Abstracts of Papers Presented at 1948 Autumn Meeting, Berkeley, California, pp. 676-683


Technical Papers
Some Electrochemical Properties of Shales, pp. 684-685
M. R. J. Wyllie
Carbon Dioxide, Cerebellum, Chloramines, and Convulsions, pp. 685-686
Maurice L. Silver
Construction of Glass Diaphragm Leaks for Gas Analysis with a Mass Spectrometer, pp. 686-688
Vernon H. Dibeler; T. Ivan Taylor
A New Influence on Chemically Induced Sarcomata, pp. 688-689
Leonell C. Strong
Antibacterial Action of the Blood of the Large Milkweed Bug, pp. 689-690
Hubert Frings; Edith Goldberg; J. Caroline Arentzen
Protection of Mice against an Encephalitis Virus by means of Organic-Solvent Extracts of Brain Tissue, pp. 690-691
Jordi Casals; Peter K. Olitsky


Comments and Communications
Allotment of Funds for Research, p. 692
Arthur N. Bragg
A Simple Method of High-Power Tissue Stimulation, p. 692
Richard McFee
Cenogonal--A New Crystallographic Term, pp. 692-693
Austin F. Rogers
Criticism of a Definition of pH, p. 693
D. A. MacInnes


Book Reviews
----------------, p. 694
Heat Conduction: With Engineering and Geological Applications
Leonard R. Ingersoll; Otto J. Zobel; Alfred C. Ingersoll
Review author[s]: R. F. Paton
----------------, pp. 694-695
Applied Physics: Electronics, Optics, Metallurgy
C. G. Suits; George R. Harrison; Louis Jordan
Review author[s]: Eric A. Walker


Scientific Book Register, p. 695
News and Notes, pp. 696-700

Previous Issue: New Series, Vol. 108, No. 2815, Dec. 10, 1948
Next Issue: New Series, Vol. 108, No. 2817, Dec. 24, 1948



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Science, New Series, Vol. 108, No. 2817, Dec. 24, 1948


Previous Issue: New Series, Vol. 108, No. 2816, Dec. 17, 1948
Next Issue: New Series, Vol. 108, No. 2818, Dec. 31, 1948


Front Matter (2 pp.)
Kitty Hawk, 1903--Clipper, 1948 (1 p.)
A Proposed Provisional Definition of Poliomyelitis Virus, pp. 701-705
Committee on Nomenclature of the National Foundation for Infantile Paralysis

Some Considerations of Bird Migration, pp. 705-711
Dean Amadon; James Hodges; William H. Allen; H. Landsberg; C. Suffern; Donald A. Gordon; Sidney Paige


Technical Papers
The Colchicine and Colchicine-Like Reaction as a Possible Response to Enzymic Poisoning, pp. 712-713
Eileen W. E. Macfarlane; Norman G. Schmock
The Crystalline Form of Sodium Ascorbate, pp. 713-714
Simon L. Ruskin; Alice T. Merrill
Effect of Hyaluronidase and of Hyaluronic Acid on Cultures of Trypanosomes, Leishmania, and Amoebae, pp. 714-715
Harry Seneca; Edward Henderson; Martha Harvey
Responses of Cuttings, Seeds, and Flowers to Dithiobiuret, pp. 715-716
Jean Dufrenoy; Robertson Pratt
Effect of Dietary Factors on Early Mortality and Hemoglobinuria in Rats Following Administration of Alloxan, pp. 716-718
Paul György; Catharine S. Rose
Growth and Fruiting of Tomato Plants as Influenced by Growth-Regulating Substances Applied to the Soil, pp. 718-719
G. S. Randhawa; H. C. Thompson
Early Maturation of Calimyrna Fig Fruits by means of Synthetic Hormone Sprays, pp. 719-720
René Blondeau; Julian C. Crane
Electronic Mapping of the Activity of the Heart and the Brain, pp. 720-723
Stanford Goldman; Weston E. Vivian; Chi Kuang Chien; Henry N. Bowes
Does the U. S. P. Vitamin A-Deficient Diet Require Supplementation with Ascorbic Acid?, pp. 724-725
N. B. Guerrant
The Effectiveness of Carbarsone in Rendering Young Mice Free of Intestinal Protozoa, p. 725
John E. Larsh; Elmer F. Chaffee


Obituary
William Delbert Funkhouser: 1881-1948, p. 726
Alfred Brauer


Book Reviews
----------------, p. 727
Advances in Biological and Medical Physics
John H. Lawrence; J. G. Hamilton
Review author[s]: Ernest C. Pollard
----------------, p. 727
Limnological Methods
Paul S. Welch
Review author[s]: Robert W. Pennak
----------------, pp. 727-728
Modern Operational Calculus with Applications in Technical Mathematics
N. W. McLachlan
Review author[s]: George E. Forsythe
----------------, pp. 728-729
An Introduction to Color
Ralph M. Evans
Review author[s]: Jozef Cohen


Scientific Book Register, p. 729
News and Notes, pp. 730-734

Previous Issue: New Series, Vol. 108, No. 2816, Dec. 17, 1948
Next Issue: New Series, Vol. 108, No. 2818, Dec. 31, 1948



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Science, New Series, Vol. 108, No. 2818, Dec. 31, 1948


Previous Issue: New Series, Vol. 108, No. 2817, Dec. 24, 1948
Next Issue: New Series, Vol. 109, No. 2819, Jan. 7, 1949


Front Matter (2 pp.)
Jaime Torres Bodet (1 p.)
Genes as Determiners of Cellular Biochemistry, pp. 735-739
David M. Bonner

The Designation of Special Isotopes in the Names and Formulas of Inorganic Compounds, pp. 740-742
George W. Watt


Technical Papers
The Common Cold: Titration of MR-1 Virus in Embryonated Eggs, pp. 743-745
Leon T. Atlas; George A. Hottle
Electron Microfossils, pp. 745-746
H. M. Barton; D. J. Jones
The Aerobee Sounding Rocket--A New Vehicle for Research in the Upper Atmosphere, pp. 746-747
J. A. Van Allen; L. W. Fraser; J. F. R. Floyd
Metabolism of C14-Labeled Urea, p. 748
Edgar Leifer; Lloyd J. Roth; Louis H. Hempelmann
A Plastic Plate for Use in Tests Involving Virus Hemagglutination and Other Similar Reactions, p. 749
Jonas E. Salk


Book Reviews
----------------, p. 750
Pathology of Tumours
R. A. Willis
Review author[s]: Hans F. Smetana
----------------, p. 750
Underwater Explosions
Robert H. Cole
Review author[s]: John D. Trimmer


News and Notes, pp. 751-754

Previous Issue: New Series, Vol. 108, No. 2817, Dec. 24, 1948
Next Issue: New Series, Vol. 109, No. 2819, Jan. 7, 1949



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