Science, New Series, Vol. 67, No. 1723, Jan. 6, 1928


Previous Issue: New Series, Vol. 66, No. 1722, Dec. 30, 1927
Next Issue: New Series, Vol. 67, No. 1724, Jan. 13, 1928


Volume Information (8 pp.)
Front Matter (4 pp.)


The American Association for the Advancement of Science
Stature throughout the World, pp. 1-5
R. Bennett Bean
The Functions of Section M--Engineering, pp. 5-7
Charles Russ Richards


Eugene Allen Smith, pp. 7-9
Walter B. Jones


Scientific Events
The London School of Hygiene and Tropical Medicine, p. 10
Free Public Lectures on Medical Subjects, p. 10
Officers of the American Chemical Society, pp. 10-11
Officers of the American Association for the Advancement of Science, pp. 11-12


Scientific Notes and News, pp. 12-14
University and Educational Notes, pp. 14-15


Discussion and Correspondence
The Period of Gestation in the Monkey, Macacus Rhesus, p. 15
Carl G. Hartman
The Floods of 1927 in the Mississippi Basin, pp. 15-16
A. J. Henry
Divisions of the Decorah Formation, p. 16
G. Marshall Kay
A Daylight Meteor, p. 16
Albert B. Reagan
Interference?, pp. 16-17
A. Gael Simson


Quotations
Dr. F. A. Bather, p. 17


Amendments to the International Rules of Zoological Nomenclature, pp. 17-18
C. W. Stiles


Special Articles
A Note on the Chromosomes of Moina Macrocopa, p. 18
Ezra Allen
Genetic Evidence that the Cladocera Male is Diploid, pp. 18-19
Arthur M. Banta; Thelma R. Wood
Pentathionic Acid, the Fungicidal Factor of Sulphur, pp. 19-20
H. C. Young


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 66, No. 1722, Dec. 30, 1927
Next Issue: New Series, Vol. 67, No. 1724, Jan. 13, 1928



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Science, New Series, Vol. 67, No. 1724, Jan. 13, 1928


Previous Issue: New Series, Vol. 67, No. 1723, Jan. 6, 1928
Next Issue: New Series, Vol. 67, No. 1725, Jan. 20, 1928


Front Matter (4 pp.)


American Association for the Advancement of Science
Geology and the World at Large, pp. 21-24
George H. Ashley
Purposive Action, pp. 24-28
Margaret Floy Washburn


The Collecting of Folk Songs by Phonophotography, pp. 28-31
Milton Metfessel


Scientific Events
New Laboratories for the Faculty of Medicine at Paris, pp. 31-32
The Proposed Transfer of the Geodetic Work of the U. S. Coast and Geodetic Survey, p. 32
Annual Meeting of the Northwest Scientific Association, pp. 32-33
J. W. Hungate
Resolutions on the Death of Dr. Francis W. Peabody, p. 33
The Ninth International Congress of Psychology, pp. 33-34


Scientific Notes and News, pp. 34-37
University and Educational Notes, p. 37


Discussion and Correspondence
On the Mechanism of Orientation of Atoms in Magnetic and Electric Fields, pp. 37-38
Thomas H. Johnson
The Identity of Clear Creek Skull, pp. 38-39
Harvey S. Thatcher
Bibliography of Colorimetry, pp. 39-40
Irwin G. Priest
No Meteorite, p. 40
R. W. Stone
Consider the User of Bulletins, pp. 40-41
L. O. Howard


Scientific Books
----------------, p. 41
Stars and Atoms
A. S. Eddington
Review author[s]: H. T. Stetson


Special Articles
The Correlation between Intelligence and Speed in Conduction of the Nerve Impulse in a Reflex Arc, pp. 41-43
Lee Edward Travis
A Comparison of Growth Curves of Man and Other Animals, pp. 43-46
Samuel Brody
Progenies from X-Rayed Sex Cells of Tobacco, p. 46
T. H. Goodspeed; A. R. Olson


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1723, Jan. 6, 1928
Next Issue: New Series, Vol. 67, No. 1725, Jan. 20, 1928



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Science, New Series, Vol. 67, No. 1725, Jan. 20, 1928


Previous Issue: New Series, Vol. 67, No. 1724, Jan. 13, 1928
Next Issue: New Series, Vol. 67, No. 1726, Special Issue Containing General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 27, 1928


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Inter-Relation of the Medical Sciences, pp. 47-52
Rufus Cole


Too Little Mathematics--and Too Much, pp. 52-59
Edwin B. Wilson

The Importance of Biology for Mankind, pp. 59-61
W. W. Lepeschkin


Scientific Events
The South African Station of the Harvard Observatory, p. 61
The Battelle Memorial Institute, p. 62
A Fund for the Study of Colds at the Johns Hopkins University, p. 62
The New Life Sciences Building at the University of California, p. 63
A Symposium at the Alfred L. Loomis Laboratory in Honor of Professor J. Franck, p. 63


Scientific Notes and News, pp. 63-67
University and Educational Notes, p. 67


Discussion and Correspondence
The Proposed Transfer of Geodetic Work of the U. S. Coast and Geodetic Survey, pp. 67-69
Geo. Otis Smith
Unstability at the Absolute Zero of Temperature, p. 69
R. D. Kleeman
The Theory of ``Visible Radiation from an Excited Nerve Fiber'', pp. 69-70
Hallowell Davis
The Antiquity of the Deposits in Jacobs Cavern, p. 70
Vernon C. Allison
The Mispronunciation of ``Data'', p. 70
R. H. Smith


Scientific Books
----------------, pp. 70-71
Les problèmes de la physiologie normale et pathologique de l'os. R. Leriche et A. Policard
Review author[s]: H. E. Jordan


Scientific Apparatus and Laboratory Methods
Methods for Determining the Color of Objects in Microscopic Mounts, pp. 71-72
W. H. Davis; F. A. MacLaughlin
A Modified Erlanger Sphygmomanometer, pp. 72-73
A. R. McLaughlin


Special Articles
Zeolite Beds in the Green River Formation, pp. 73-74
W. H. Bradley
The Adhesion of Mercury to Glass, pp. 74-76
Will C. Baker


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1724, Jan. 13, 1928
Next Issue: New Series, Vol. 67, No. 1726, Special Issue Containing General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 27, 1928



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Science, New Series, Vol. 67, No. 1726, Special Issue Containing General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 27, 1928


Previous Issue: New Series, Vol. 67, No. 1725, Jan. 20, 1928
Next Issue: New Series, Vol. 67, No. 1727, Special Issue Containing Reports of the Sessions of Sections and Societies at the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 3, 1928


Front Matter (4 pp.)


The American Association for the Advancement of Science
General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies, pp. 77-85
The Council Roll at Nashville, pp. 85-88
The Roll of the Executive Committee at Nashville, p. 88
Legislative and Executive Proceedings at Nashville, pp. 88-90
Resolutions Bearing on the Public Welfare Adopted by the Council at Nashville, December 28, 1927, p. 91
The Annual Conference of Section and Society Secretaries, p. 91
Report of the Treasurer for 1926-27, pp. 91-93
Financial Report of the Permanent Secretary for the Fiscal Year 1926-27, pp. 93-95
Report of the Committee on the Place of Science in Education, pp. 95-96
Otis W. Caldwell
Grants for Research, for 1928, pp. 96-97
General Officers of the Association for 1928, pp. 97-98
Future Annual Meetings, pp. 98-99
Special Notes, p. 99


Scientific Events
New Building for the Physical Sciences at the University of Chicago, p. 99
The Pure Science Research Fund at Princeton University, pp. 99-100
Resolution regarding the U. S. Coast and Geodetic Survey, p. 100
Bailey Willis; Edward B. Mathews
The Second Session of the Institute of Chemistry, pp. 100-101


Scientific Notes and News, pp. 101-103
University and Educational Notes, pp. 103-104


Discussion and Correspondence
Ovarian Secretion and Tumor Incidence, p. 104
Leo Loeb
Laws Relating to Mathematical Operations, pp. 104-105
G. A. Miller
Soil Science Publication in Russia, p. 105
J. S. Joffe


Scientific Books
----------------, pp. 105-106
The Elements of General Zoology
William J. Dakin
Review author[s]: Hubert Lyman Clark


Scientific Apparatus and Laboratory Methods
A Convenient Device for Plant Solution-Culture Work, pp. 106-107
Frederick S. Hammett
A Method for Cutting Glass Tubing, p. 107
Herman E. Seemann


Special Articles
Reflection of Light from the Surfaces of Leaves, pp. 107-108
Charles A. Shull


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1725, Jan. 20, 1928
Next Issue: New Series, Vol. 67, No. 1727, Special Issue Containing Reports of the Sessions of Sections and Societies at the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 3, 1928



©2000-2007 JSTOR

Science, New Series, Vol. 67, No. 1727, Special Issue Containing Reports of the Sessions of Sections and Societies at the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 3, 1928


Previous Issue: New Series, Vol. 67, No. 1726, Special Issue Containing General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 27, 1928
Next Issue: New Series, Vol. 67, No. 1728, Feb. 10, 1928


Front Matter (7 pp.)


The American Association for the Advancement of Science
The Response to the Addresses of Welcome at the Opening Session at Nashville, pp. 109-111
A. A. Noyes
The Newly-Elected President of the American Association, pp. 111-113
B. E. L.
Reports of the Sessions of Sections and Societies at the Second Nashville Meeting, pp. 113-131
Special Notes, p. 131


Scientific Events
National Research Fellows at Princeton University, p. 132
Presentation of the Nichols Medal to Professor Hugh S. Taylor, p. 132
Medal Presentations to General Carty and Dr. Coolidge, pp. 132-133


Scientific Notes and News, pp. 133-135
University and Educational Notes, p. 135


Discussion and Correspondence
Discovery of Further Hominid Remains of Lower Quaternary Age from the Chou Kou Tien Deposit, pp. 135-136
Davidson Black
An Instance of the Increase of Malaria by Civilization, p. 136
L. O. Howard
The Scientific Men of Harvard and of Columbia, pp. 136-138
J. McKeen Cattell


Reports
Address of the President of the Australasian Association for the Advancement of Science, pp. 138-139


Special Articles
Nutritional Anemia on Whole Milk Diets and Its Correction with the Ash of Beef Liver, pp. 139-140
J. Waddell; C. A. Elvehjem; H. Steenbock; E. B. Hart


Societies and Academies, p. 140
Science News, pp. xlvi+xlviii

Previous Issue: New Series, Vol. 67, No. 1726, Special Issue Containing General Reports of the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 27, 1928
Next Issue: New Series, Vol. 67, No. 1728, Feb. 10, 1928



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Science, New Series, Vol. 67, No. 1728, Feb. 10, 1928


Previous Issue: New Series, Vol. 67, No. 1727, Special Issue Containing Reports of the Sessions of Sections and Societies at the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 3, 1928
Next Issue: New Series, Vol. 67, No. 1729, Feb. 17, 1928


Front Matter (4 pp.)


American Association for the Advancement of Science
Old Problems and a New Technique, pp. 141-149
Winterton C. Curtis


Spaces of Statistics and Their Metrization, pp. 149-150
Harold Hotelling

Paul Heinrich Von Groth, pp. 150-152
Edward H. Kraus


Scientific Events
The Ella Sachs Plotz Foundation for the Advancement of Scientific Investigation, p. 152
The Journal of the Swedish Forestry Society, pp. 152-153
Henry I. Baldwin
Statement Regarding the Dismissal of the Health Commissioner of Chicago, p. 153
Report of the Delegate of the Botanical Society of America to the Third Pan-Pacific Congress, pp. 153-154


Scientific Notes and News, pp. 154-158
University and Educational Notes, p. 158


Discussion and Correspondence
Alexandrovsk Biological Station, pp. 158-159
R. B. Harvey
The Etiology of European Foulbrood of Bees, pp. 159-160
A. G. Lochhead
Concerning Man's Antiquity at Frederick, Oklahoma, pp. 160-161
Leslie Spier
``Exit the Tentamen, but...'' What?, pp. 161-162
W. J. Holland
Visible Radiation from Excited Nerve Fiber Again, p. 162
Christine Ladd-Franklin


Quotations
Genesis and Evolution, pp. 162-163


Separations by the Ionic Migration Method, pp. 163-167
James Kendall


Scientific Apparatus and Laboratory Methods
Determining Soil Moisture Rapidly and Accurately by Methyl Alcohol, p. 167
George J. Bouyoucos
A Convenient Method of Measuring Quantities of Chloroplast Pigments, pp. 167-169
Howard B. Sprague


Special Articles
The Isolation and Function of Phosphocreatine, pp. 169-170
Cyrus H. Fiske; Y. Subbarow


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1727, Special Issue Containing Reports of the Sessions of Sections and Societies at the Second Nashville Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 3, 1928
Next Issue: New Series, Vol. 67, No. 1729, Feb. 17, 1928



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Science, New Series, Vol. 67, No. 1729, Feb. 17, 1928


Previous Issue: New Series, Vol. 67, No. 1728, Feb. 10, 1928
Next Issue: New Series, Vol. 67, No. 1730, Feb. 24, 1928


Front Matter (2 pp.)
Wellesley College and the Development of Botanical Education in America, pp. 171-178
C. Stuart Gager

Neurology and the Teaching of Medicine, pp. 178-180
Foster Kennedy

The Celebration of the Centenary of Marcelin Berthelot, pp. 180-185
Atherton Seidell


Scientific Events
An International Convention on Cancer Research, p. 185
The Proposed Pan-American Geodetic Institute, pp. 185-186
New Building for the Yale School of Medicine, p. 186
The 1929 Budget of the U. S. Department of Agriculture, pp. 186-187


Scientific Notes and News, pp. 187-191
University and Educational Notes, pp. 191-192


Discussion and Correspondence
Applied Geophysics, pp. 192-193
A. S. Eve
The Multiple Origin of Tumors, pp. 193-194
H. E. Eggers
The Cuticula of Nematodes, pp. 194-195
Thomas B. Magath
An Unusual Atmospheric Phenomenon, p. 195
Boyd W. Bartlett
Psycho-Endocrinology, p. 195
Louis Berman


Quotations
State Academies of Science, pp. 195-196


Reports
Resolutions Adopted by the International Geodetic and Geophysical Union, pp. 196-197
Ch. Lallemand


Scientific Apparatus and Laboratory Methods
Infiltrating Pig Embryos with Paraffin, pp. 197-198
T. L. Malumphy


Special Articles
The Anatomy of the Corium, pp. 198-199
O. V. Batson
The Dialysis of Pituitary Extracts, pp. 199-200
Oliver Kamm


Science News, pp. x

Previous Issue: New Series, Vol. 67, No. 1728, Feb. 10, 1928
Next Issue: New Series, Vol. 67, No. 1730, Feb. 24, 1928



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Science, New Series, Vol. 67, No. 1730, Feb. 24, 1928


Previous Issue: New Series, Vol. 67, No. 1729, Feb. 17, 1928
Next Issue: New Series, Vol. 67, No. 1731, Mar. 2, 1928


Front Matter (4 pp.)
Atomic Hydrogen as an Aid to Industrial Research, pp. 201-208
Irving Langmuir

James Campbell Todd, pp. 208-209
E. R. Mugrage


Scientific Events
The Arnold Arboretum, pp. 209-210
Gifts to the College of Physicians and Surgeons by the Alumni Association, p. 210
Radio Broadcasts of Twice-Daily Weather Reports, pp. 210-211
A. J. H.
Dinner in Honor of Dr. L. O. Howard, p. 211


Scientific Notes and News, pp. 211-215
University and Educational Notes, p. 215


Discussion and Correspondence
The Ichnology of Texas, pp. 215-216
Roy L. Moodie
Discovery of Fossil Tracks on the North Rim of the Grand Canyon, p. 216
Charles W. Gilmore; Glenn E. Sturdevant
A Corm Rot of Gladiolus Caused by a Penicillium, pp. 216-217
Lucia McCulloch; Charles Thom
Undulant Fever in America, p. 217
Frederick W. Shaw
Are Salt Solutions Musical?, pp. 217-218
O. C. Magistad
Banana Stowaways, p. 218
L. A. Adams
On the Velocity of Sound, p. 218
P. I. Wold; Geo. R. Stibitz


Scientific Books
----------------, pp. 218-219
Navigator. The Story of Nathaniel Bowditch
Alfred Stanford
Review author[s]: H. T. Stetson


Reports
American School of Prehistoric Research, pp. 219-220
George Grant MacCurdy


Special Articles
On the Distribution of Critical Temperatures for Spawning and for Ciliary Activity in Bivalve Molluscs, pp. 220-221
Thurlow C. Nelson
Starvation Ketosis of the Primates, pp. 221-222
Theodore E. Friedemann


Science News, pp. x+xii+xiv
Back Matter (4 pp.)

Previous Issue: New Series, Vol. 67, No. 1729, Feb. 17, 1928
Next Issue: New Series, Vol. 67, No. 1731, Mar. 2, 1928



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Science, New Series, Vol. 67, No. 1731, Mar. 2, 1928


Previous Issue: New Series, Vol. 67, No. 1730, Feb. 24, 1928
Next Issue: New Series, Vol. 67, No. 1732, Mar. 9, 1928


Front Matter (4 pp.)
Physics and Politics, pp. 223-227
William Bennett Munro

A Layman's View of History, pp. 227-232
Henry Osborn Taylor

Samuel Garman--1843-1927, pp. 232-233
David Starr Jordan; Thomas Barbour


Scientific Events
The National Research Council of Italy, pp. 233-234
The Faraday Memorial Fund, pp. 234-235
The World Engineering Congress, p. 235
The St. Louis Meeting of the American Chemical Society, pp. 235-236


Scientific Notes and News, pp. 236-240
University and Educational Notes, pp. 240-241


Discussion and Correspondence
Three Notable Books on the History of Mathematics of the Greeks, p. 241
Louis C. Karpinski
On Molecular Diameters in Gas Reactions, p. 241
Richard C. Tolman; Don M. Yost; Roscoe G. Dickinson
Another Record of the Fresh-Water Jelly-Fish, p. 242
C. M. Breder
Concerning the Transmission of an Acquired Character in Flax, p. 242
B. B. Robinson
The Beginning of Winter, p. 243
C. N. Fenner


Quotations
One Tooth Gone Wrong, pp. 243-244


Scientific Books
----------------, pp. 244-248
The Abilities of Man, Their Nature and Measurement
C. Spearman
Review author[s]: Edwin B. Wilson


Special Articles
Telescopic Observation of Cathode and Anode Points, pp. 248-249
Carl Barus
Factor H in the Nutrition of Trout, pp. 249-250
C. M. McCay; F. C. Bing; W. E. Dilley


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1730, Feb. 24, 1928
Next Issue: New Series, Vol. 67, No. 1732, Mar. 9, 1928



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Science, New Series, Vol. 67, No. 1732, Mar. 9, 1928


Previous Issue: New Series, Vol. 67, No. 1731, Mar. 2, 1928
Next Issue: New Series, Vol. 67, No. 1733, Mar. 16, 1928


Front Matter (4 pp.)
Wings for the Spirit, pp. 251-255
Howard T. Karsner

Commemoration of the Bi-Centenary of the Death of Newton, pp. 255-262
Frederick E. Brasch

Frank W. Very, pp. 262-263
J. Gordon Ogden


Scientific Events
Expedition to Combat Sleeping Sickness in French Africa, p. 263
Casting of a Large Disk of Optical Glass by the U. S. Bureau of Standards, pp. 263-264
Experiment Station of the Georgia State College of Agriculture, p. 264
T. H. McHatton
Award of the Charles Reid Barnes Life Membership in the American Society of Plant Physiologists, pp. 264-265


Scientific Notes and News, pp. 265-269
University and Educational Notes, p. 269


Discussion and Correspondence
Tree Frogs and Pitcher Plants, pp. 269-270
E. A. Andrews
The Occurrence of Conjugation in Paramecium Calkinsi, pp. 270-271
D. H. Wenrich; C. C. Wang
Centrifuging Filterable Viruses, p. 271
H. H. McKinney
Colorimetric Methods in Biology, pp. 271-272
F. B. Sumner
Specialization and Cooperation in Scientific Research, p. 272
B. A. Behrend
A Function of Regional Scientific Societies, pp. 272-273
Thos. Large
Children Who Run on All Fours, p. 273
Aleš Hrdlička


Scientific Books
----------------, pp. 273-275
The Antiquity of Man in East Anglia
J. Reid Moir
Review author[s]: H. F. O.


Scientific Apparatus and Laboratory Methods
A Photographic Plate that Penetrates Desert Haze, p. 275
Eliot Blackwelder
Modified Water Regulator for Small Tanks, pp. 275-276
Tage Skogsberg


Special Articles
Some Devonian Plant Localities of Central and Western New York, pp. 276-277
Chester A. Arnold
Effect of Ultra-Violet Light upon Digitalis Purpurea, pp. 277-278
Adelia McCrea


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1731, Mar. 2, 1928
Next Issue: New Series, Vol. 67, No. 1733, Mar. 16, 1928



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Science, New Series, Vol. 67, No. 1733, Mar. 16, 1928


Previous Issue: New Series, Vol. 67, No. 1732, Mar. 9, 1928
Next Issue: New Series, Vol. 67, No. 1734, Mar. 23, 1928


Front Matter (4 pp.)


American Association for the Advancement of Science
Science and the Newspapers, pp. 279-286
Wm. E. Ritter


Malnutrition in Plants, pp. 286-288
F. J. Sievers


Scientific Events
Budget of the Bureau of Chemistry and the Bureau of Biological Survey, pp. 288-289
The Giannini Foundation of the University of California, p. 289
Presentation of the Charles P. Daly Gold Medal to Professor Alois Musil, pp. 289-290
National Research Fellowships in the Biological Sciences, p. 290
Frank R. Lillie


Scientific Notes and News, pp. 290-295
University and Educational Notes, p. 295


Discussion and Correspondence
The Functional Nature of the Constant of Mass Action, pp. 295-296
R. D. Kleeman
Vegetative Propagation of the Apple by Seed, p. 296
Charles F. Swingle
Living Cells in Heart-Wood of Trees, pp. 296-297
J. H. Faull
A Prehistory Chart, p. 297
E. A. Hooton
Philosophy or Irony, Which?, p. 297
M. M. Garver
The South African Station of the Harvard Observatory, pp. 297-298
Harlow Shapley
Apparatus, p. 298
Wilmer Souder


Scientific Books
----------------, pp. 298-299
Climate through the Ages: A study of the Climatic Factors and Their Variations
C. E. P. Brooks
Review author[s]: Malcolm H. Bissell


Scientific Apparatus and Laboratory Methods
A Method for Cutting Glass Tubing, p. 299
I. P. Tolmachoff
A Platinum Spoon for Isolating and Transferring Protozoa, p. 299
Percy L. Johnson


Special Articles
Statistics of Vocabulary, p. 300
E. U. Condon


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1732, Mar. 9, 1928
Next Issue: New Series, Vol. 67, No. 1734, Mar. 23, 1928



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Science, New Series, Vol. 67, No. 1734, Mar. 23, 1928


Previous Issue: New Series, Vol. 67, No. 1733, Mar. 16, 1928
Next Issue: New Series, Vol. 67, No. 1735, Mar. 30, 1928


Front Matter (4 pp.)
George Sumner Huntington, Anatomist, pp. 301-307
Charles F. W. McClure

Ideals of the Engineer, pp. 307-309
John J. Carty


Scientific Events
Conference of Lake Erie Biologists, pp. 309-310
Elmer Higgins
Meeting of the American Electrochemical Society, p. 310
Election of Fellows to the Royal Society of Edinburgh, pp. 310-311
New Chapters of the Society of Sigma Xi, p. 311


Scientific Notes and News, pp. 311-314
University and Educational Notes, pp. 314-315


Discussion and Correspondence
Oxidation-Reduction Reactions, pp. 315-316
William T. Hall
Pseudo-Artifacts from the Pliocene of Nebraska, pp. 316-317
N. C. Nelson
The Life History of Varanus Niloticus, pp. 317-318
Raymond B. Cowles
Trinitasia--A New Molluscan Genus from South America, p. 318
Carlotta J. Maury
The Behavior of Mallard Ducks, pp. 318-319
Birger R. Headstrom
Wanted--A Word to Replace ``Believe'', p. 319
E. C. L. Miller
The Pronunciation of Research, p. 319
Nicholas Kopeloff


Scientific Books
----------------, pp. 319-320
Handbuch der Paläobotanik
Max Hirmer
Review author[s]: Edward W. Berry


Scientific Apparatus and Laboratory Methods
A Constant Rate Aspirator, pp. 320-322
Chas. F. Hottes; A. L. Hafenrichter
A Simplified Plankton Bucket, p. 322
Arthur S. Campbell


Special Articles
Observations on Heating Hay in the Flooded Regions of Northern Vermont, pp. 322-324
Lawrence H. James; David J. Price
The Relation of Boron to the Growth of the Tomato Plant, pp. 324-325
Earl S. Johnston; W. H. Dore
Triassic Vertebrate Fossils from Wyoming, pp. 325-326
E. B. Branson; M. G. Mehl


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1733, Mar. 16, 1928
Next Issue: New Series, Vol. 67, No. 1735, Mar. 30, 1928



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Science, New Series, Vol. 67, No. 1735, Mar. 30, 1928


Previous Issue: New Series, Vol. 67, No. 1734, Mar. 23, 1928
Next Issue: New Series, Vol. 67, No. 1736, Apr. 6, 1928


Front Matter (4 pp.)
Some Applications of Paleontology, pp. 327-333
William Berryman Scott

The Contribution of Biology, Chemistry and Physics to the Newer Knowledge of Rickets, pp. 333-335
Alfred F. Hess

Acoustics of Auditoriums, pp. 335-338
F. R. Watson


Scientific Events
The Population of the United States, p. 339
Appropriations by the Commonwealth Fund, pp. 339-340
The Fourth Pacific Science Congress, p. 340
Vernon Kellogg
Award of Fellowships by the Guggenheim Foundation, pp. 340-341


Scientific Notes and News, pp. 341-344
University and Educational Notes, pp. 344-345


Discussion and Correspondence
Science and Secretaries, pp. 345-346
Bailey Willis
Re Speciation without Climatic Change Or Geographic Isolation, pp. 346-347
J. T. Nichols
Weight and Humidity, p. 347
Arnold Romberg; L. W. Blau
Lepidoptera of New York, pp. 347-348
Wm. T. M. Forbes
The Eastland Horned ``Toad'', p. 348
Willis G. Hewatt
The Brasso Fossiliferous Miocene of Trinidad, West Indies, p. 348
Carlotta J. Maury


Scientific Books
The Cephalaspidae, pp. 348-349
Review author[s]: Roy L. Moodie


Scientific Apparatus and Laboratory Methods
A Universal Muscle Lever, pp. 349-350
A. R. McLaughlin
Method for Growing Small-Seeded Plants under Sterile Conditions, pp. 350-351
A. B. Beaumont; G. J. Larsinos


Special Articles
The Overwintering in Massachusetts of Ixodiphagus Caucurtei, pp. 351-353
F. Larrousse; Arthur G. King; S. B. Wolbach
An Efficiency Formula for Dairy Cows, pp. 353-354
W. L. Gaines


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1734, Mar. 23, 1928
Next Issue: New Series, Vol. 67, No. 1736, Apr. 6, 1928



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Previous Issue: New Series, Vol. 67, No. 1735, Mar. 30, 1928
Next Issue: New Series, Vol. 67, No. 1737, Apr. 13, 1928


Front Matter (4 pp.)
The Physiologic Life, pp. 355-360
A. J. Carlson

A Revision of the Fundamental Law of Habit Formation, pp. 360-362
Knight Dunlap

Henri Bosmans, pp. 362-363
Florian Cajori


Scientific Events
International Society for the Exploration of the Arctic Regions by Means of the Airship (Aeroarctic), p. 363
I. Tolmachoff
The Reorganization of the Post-Graduate Medical School and Hospital, pp. 363-364
The St. Louis Meeting of the American Chemical Society, p. 364
The Milton Research Awards of Harvard University, pp. 364-365


Scientific Notes and News, pp. 365-369
University and Educational Notes, pp. 369-370


Discussion and Correspondence
A Periodic Classification of the Hardness and Melting-Points of the Elements, pp. 370-371
S. A. Korff
Further Evidence Concerning Man's Antiquity at Frederick, Oklahoma, pp. 371-373
Harold J. Cook
The Geology of Sonora, p. 373
Graham John Mitchell
Threatened Extinction of the Ruffed Grouse, p. 373
Birger R. Headstrom
What is a Name?, p. 373
Wm. T. M. Forbes


Scientific Books
----------------, pp. 373-374
A treatise on the British Freshwater Algae in Which are Included All the Pigmented Protophyta Hitherto Found in British Freshwaters, by the Late G. S. West
F. E. Fritsch
Review author[s]: Charles A. Kofoid
----------------, p. 374
Gewebezüchtung. Handbuch der Biologie der Gewebezellen in Vitro
Albert Fischer
Review author[s]: Albert H. Ebeling


Scientific Apparatus and Laboratory Methods
A Simple Visual Method for Demonstrating the Diffusion of Oxygen through Rubber and Various Other Substances, pp. 374-376
Samuel E. Hill


Special Articles
The Production of Mutations and Rearrangements of Genes by X-Rays, pp. 376-377
Alexander Weinstein
A Determination of the Newtonian Constant of Gravitation by a Study of the Vibrations of a Torsion Pendulum, pp. 377-378
T. E. Stern


Science News, pp. x+xii+xiv

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Next Issue: New Series, Vol. 67, No. 1737, Apr. 13, 1928



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Science, New Series, Vol. 67, No. 1737, Apr. 13, 1928


Previous Issue: New Series, Vol. 67, No. 1736, Apr. 6, 1928
Next Issue: New Series, Vol. 67, No. 1738, Apr. 20, 1928


Front Matter (4 pp.)


The American Association for the Advancement of Science
Contributions of the Chemist to Our Knowledge of Biological Oxidations, pp. 379-385
Edward C. Kendall
Contributions of Anthropology to Medicine, pp. 385-388
Aleš Hrdlička


Edward Sandford Burgess, p. 388
Theodore E. Hamilton


Scientific Events
A New Edition of Willard Gibbs's Works and Proposed Commentary, p. 389
John Johnston; William F. G. Swann; Ralph G. Van Name
Barro Colorado Island Station, pp. 389-390
Vernon Kellogg
Appropriations of the General Education Board, p. 390
Annual Meeting of the American Geophysical Union, pp. 390-391


Scientific Notes and News, pp. 391-394
University and Educational Notes, p. 394


Discussion and Correspondence
The Aurora of March 28, 1928, pp. 394-395
H. T. Stetson
``Washboard'' Or ``Corduroy'' Effect Due to the Travel of Automobiles over Dirt and Graveled Roads, pp. 395-396
Ray C. Treasher; Ellwood Wilson
A Note on Ovarian Secretion and Cancer, pp. 396-397
William S. Murray
On a Relation of the Sun's Activity to Some Biological Factors, p. 397
G. I. Pokrowski
The Sharp Rattling in Steam-Pipes, pp. 397-398
R. C. Colwell
Scientific Obscurity, p. 398
Edwin E. Slosson


Scientific Books
----------------, pp. 398-399
Birds of the Pacific States
Ralph Hoffmann
Review author[s]: Tracy I. Storer
----------------, pp. 399-400
Textbook of Comparative Physiology
Charles Garner Rogers
Review author[s]: C. W. Greene


Scientific Apparatus and Laboratory Methods
The Collodion Method and Serial Sections, pp. 400-401
E. Eleanor Carothers


Special Articles
Direct Evidence of Atom Building, pp. 401-402
R. A. Millikan; G. H. Cameron
Forms and Properties of Water Soluble Phosphorus in Soils, pp. 402-403
F. W. Parker


The American Philosophical Society, pp. 403-404
Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 67, No. 1737, Apr. 13, 1928
Next Issue: New Series, Vol. 67, No. 1739, Apr. 27, 1928


Front Matter (4 pp.)
International Relations in Science, pp. 405-411
George Barger

Science Week in New York, pp. 411-413
Henry Fairfield Osborn

Walter Le Conte Stevens, pp. 413-414
Benjamin Allen Wooten


Scientific Events
Proposed Memorial to the Late Professors Sir William M. Bayliss and Ernest H. Starling, pp. 414-415
The Yale School of Forestry, p. 415
Increase of Salaries at Columbia University, pp. 415-416
American Medical Association Grants for Research, p. 416


Scientific Notes and News, pp. 416-420
University and Educational Notes, p. 420


Discussion and Correspondence
The Appearance of Instability of Condensed Substances Near the Absolute Zero of Temperature, pp. 420-421
R. D. Kleeman
Ethylene is a Ripener of Fruits and Vegetables, pp. 421-422
R. B. Harvey
Banana Stowaways, p. 422
George Wagner; Edward R. Warren
Galilei Or Galileo?, p. 422
A. Kampmeier
Contributions Asked for Memorial to Laplace, pp. 422-423
G. W. Littlehales


Scientific Books
----------------, p. 423
Flora of the Panama Canal Zone
Paul C. Standley
Review author[s]: John M. Coulter


Special Articles
Vitamins A, D and E and the Oxidation of Fats and Oils, pp. 424-425
George E. Holm
Modifications in Chilodon Uncinatus Produced by Ultra-Violet Light, p. 425
Mary Stuart MacDougall


The National Academy of Sciences, pp. 425-426
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1737, Apr. 13, 1928
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Science, New Series, Vol. 67, No. 1739, Apr. 27, 1928


Previous Issue: New Series, Vol. 67, No. 1738, Apr. 20, 1928
Next Issue: New Series, Vol. 67, No. 1740, May 4, 1928


Front Matter (3 pp.)
Research, an Educational Asset, pp. 427-431
B. S. Hopkins

The Need for Training Taxonomic Botanists, pp. 431-432
A. S. Hitchcock

The Fifth New York Meeting of the American Association and Associated Societies, pp. 432-435
Burton E. Livingston


Scientific Events
The International Population Union, pp. 435-436
Raymond Pearl
International Conferences in 1928, pp. 436-437
Forestry Advances in the United States, p. 437
Dr. B. L. Hartwell and the Rhode Island Agricultural Experiment Station, p. 437
A. B. Beaumont; Ford S. Prince


Scientific Notes and News, pp. 437-441
University and Educational Notes, pp. 441-442


Discussion and Correspondence
A Note on the Fluorescence of Teeth in Ultra-Violet Rays, p. 442
H. C. Benedict
On the Antiquity of Relics of Man at Frederick, Oklahoma, pp. 442-444
Oliver P. Hay
One Hundred Per Cent. Hatch, p. 444
Ralph C. Jackson
More Data, p. 444
Christine Ladd-Franklin


Scientific Books
----------------, pp. 444-445
Romance of the Sun
Mary Proctor
Review author[s]: Ida Barney


Scientific Apparatus and Laboratory Methods
Mounting Chick Embryos, pp. 445-446
James W. Mavor
Color Discs Used in Soil Color Analysis, pp. 446-447
G. B. Bodman


Special Articles
Living Cells Two and a Half Centuries Old, pp. 447-448
D. T. MacDougal; J. G. Brown


Science News, pp. x+xii

Previous Issue: New Series, Vol. 67, No. 1738, Apr. 20, 1928
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Previous Issue: New Series, Vol. 67, No. 1739, Apr. 27, 1928
Next Issue: New Series, Vol. 67, No. 1741, May 11, 1928


Front Matter (3 pp.)


The American Association for the Advancement of Science
Malaria, pp. 449-454
A. M. Stimson
Parasitology in Relation to Medical Problems of the South, pp. 454-456
C. C. Bass


Willem Einthoven, pp. 456-458
H. B. Williams


Scientific Events
Activities of the Rockefeller Foundation, p. 458
The International Congress of Photography, p. 458
The Selection of Chief of the U. S. Bureau of American Ethnology, pp. 458-459
Annual Meeting of the American Association of Museums, p. 459
The National Academy of Sciences, pp. 459-460


Scientific Notes and News, pp. 460-463
University and Educational Notes, pp. 463-464


Discussion and Correspondence
Deafness in Pre-Columbian Peru, p. 464
Roy L. Moodie
Production of Potato Tuber Necrosis, pp. 464-465
Alfred H. Gilbert
``General Zoology'', p. 465
William John Dakin
The Pronunciation of Research, pp. 465-466
Edwin E. Slosson; Paul Nicholas Leech; Wm. T. Magruder


Quotations
Popular Science, pp. 466-467


Scientific Books
----------------, pp. 467-468
The Biology of Insects
George H. Carpenter
Review author[s]: L. O. Howard
----------------, p. 468
Colorado Plant Life
Francis Ramaley
Review author[s]: John W. Harshberger


Special Articles
Multiple Positively Charged Radioactive Ions, pp. 468-470
Leonard B. Loeb
Crossing-Over between the W and Z Chromosomes of the Killifish Platypoecilus, p. 470
Allan C. Fraser; Myron Gordon


Science News, pp. x+xii

Previous Issue: New Series, Vol. 67, No. 1739, Apr. 27, 1928
Next Issue: New Series, Vol. 67, No. 1741, May 11, 1928



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Previous Issue: New Series, Vol. 67, No. 1740, May 4, 1928
Next Issue: New Series, Vol. 67, No. 1742, May 18, 1928


Front Matter (4 pp.)
What Constitutes Publication?, pp. 471-478
C. W. Stiles

The Seventh Cruise of the Non-Magnetic Yacht ``Carnegie'', pp. 478-479
J. A. Fleming

Harris Hawthorne Wilder, pp. 479-481
H. S. Pratt


Scientific Events
The Secretaries' Conference of the American Association and Affiliated Societies, p. 481
George T. Hargitt
Annual Meeting of Science Service, p. 482
Watson Davis
Report of the Henry Draper Committee of the National Academy of Sciences, pp. 482-483
W. W. Campbell
Appointments of the Carnegie Institution of Washington, p. 483


Scientific Notes and News, pp. 483-487
University and Educational Notes, pp. 487-488


Discussion and Correspondence
Does the Amount of Food Consumed Influence the Growth of an Animal?, pp. 488-489
Wm. C. Rose
The Siberian Meteorite, pp. 489-490
George P. Merrill
Concerning a Rhizoctonia Which Forms Hymenial Cells and Basidiospores in Culture, p. 490
J. E. Kotila
Modeling Clay as a Substitute for Colophonium Wax in the Physiological Laboratory, pp. 490-491
R. R. Durant
A ``Data'' of Research, p. 491
F. L. Wells


Scientific Books
----------------, pp. 491-492
Brachiopod Morphology and Genera (Recent and Tertiary
J. Allan Thomson
Review author[s]: Charles Schuchert


Scientific Apparatus and Laboratory Methods
The Use of Naphthalene in Narcotizing Earthworms, pp. 492-493
Elbert C. Cole


Special Articles
The Effects of Selective Solar Radiations on Growth and Development, pp. 493-494
Charles Sheard; George M. Higgins
Vitamin B--A Question of Nomenclature, pp. 494-496
S. L. Smith


The Federation of American Societies of Experimental Biology, p. 496
E. D. Brown

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1740, May 4, 1928
Next Issue: New Series, Vol. 67, No. 1742, May 18, 1928



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Science, New Series, Vol. 67, No. 1742, May 18, 1928


Previous Issue: New Series, Vol. 67, No. 1741, May 11, 1928
Next Issue: New Series, Vol. 67, No. 1743, May 25, 1928


Front Matter (4 pp.)
The Berthelot Centenary and the Resulting International Efforts to Advance Chemistry, pp. 497-499
Atherton Seidell

Rainfall and Run-Off, pp. 500-501
Frank D. Adams

Edward Sandford Burgess, pp. 501-502
Walter K. Fisher


Scientific Events
The Oxford Expedition to Greenland, pp. 502-503
The International Congress of Americanists, p. 503
Franz Boas; P. E. Goddard
Building Plans of the American Museum of Natural History, pp. 503-504
New Building for Plant Industry at the University of Minnesota, p. 504
Lectures under the Auspices of the Astronomical Society of the Pacific, p. 504


Scientific Notes and News, pp. 505-508
University and Educational Notes, pp. 508-509


Discussion and Correspondence
The Reapportionment Bill in Congress, pp. 509-510
Edward V. Huntington
A Possible Correlation of Eye Soreness with Vitamin A Deficiency Among the Nez Perces Indians, pp. 510-511
C. A. Browne
The Liter and the Cubic Decimeter, pp. 511-512
H. W. Bearce
The Passing of the Circuit System of Collecting Weather Reports, p. 512
Alfred J. Henry
The Abnormal Specific Heat of a Rarefied Gas at a Low Temperature, and the Cosmic Radiation, p. 512
R. D. Kleeman


Scientific Apparatus and Laboratory Methods
Macroscopical Detection of the Medullated Wool Fiber, pp. 512-513
J. F. Wilson
A Perfusion Fluid for Elasmobranchs, pp. 513-514
Eleanor M. Kapp


Special Articles
The Sexual Stage of Fungi Induced by Ultra-Violet Rays, pp. 514-515
F. L. Stevens
The Amide Nitrogen of Blood, pp. 515-516
Sidney Bliss


American Association for the Advancement of Science
The Spring Meeting of the Executive Committee, pp. 516-518
Burton E. Livingston


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1741, May 11, 1928
Next Issue: New Series, Vol. 67, No. 1743, May 25, 1928



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Science, New Series, Vol. 67, No. 1743, May 25, 1928


Previous Issue: New Series, Vol. 67, No. 1742, May 18, 1928
Next Issue: New Series, Vol. 67, No. 1744, Jun. 1, 1928


Front Matter (4 pp.)
The Responsibility of the Agricultural Experiment Station in the Present Agricultural Situation, pp. 519-522
C. G. Williams

Louis Agassiz and the Hall of Fame, p. 523
Henry Fairfield Osborn

Ernst J. Lesser, pp. 523-524
Carl F. Cori


Scientific Events
The Second International Conference on Bituminous Coal, p. 524
The Sixth National Colloid Symposium, pp. 524-525
A Bill to Promote Ethnological Research Among the American Indians, p. 525
The Award of Medals by the Franklin Institute, pp. 525-526


Scientific Notes and News, pp. 526-530
University and Educational Notes, p. 530


Discussion and Correspondence
The Little Circle of Reference, pp. 530-531
Carl Barus
Occurrence of a Mutant Meadow-Mouse, p. 531
Ruth Dowell Svihla; Arthur Svihla
Notes on the Occurrence of Sarcocystis, pp. 531-532
H. L. Osterud; K. F. Bascom
Quails, Potato-Bugs and Other Things, p. 532
N. L. Willet
The Earliest Dynamo, pp. 532-533
H. W. Wiley


Scientific Books
----------------, pp. 533-535
Biochemical Laboratory Methods for Students of the Biological Sciences
Clarence Austin Morrow
Review author[s]: William Seifriz


Scientific Apparatus and Laboratory Methods
A Combined Fixative and Stain for Demonstrating Flagella and Cilia in Temporary Mounts, p. 535
Lowell E. Noland
Reproducing Illustrations without a Camera, pp. 535-536
Edgar P. Jones


Special Articles
The Parathyroid Glands as Influenced by Selective Solar Radiaton, pp. 536-537
George M. Higgins; Charles Sheard
A New Type of Acid Carbohydrate from Seaweed, pp. 537-538
Leonard H. Cretcher; William L. Nelson


Societies and Academies, p. 538
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1742, May 18, 1928
Next Issue: New Series, Vol. 67, No. 1744, Jun. 1, 1928



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Science, New Series, Vol. 67, No. 1744, Jun. 1, 1928


Previous Issue: New Series, Vol. 67, No. 1743, May 25, 1928
Next Issue: New Series, Vol. 67, No. 1745, Jun. 8, 1928


Front Matter (4 pp.)
The Place of Research in the College, pp. 539-543
Harry N. Holmes

Early Psychological Laboratories, pp. 543-548
J. McKeen Cattell

William Barnum, p. 548
Irving M. Grey


Scientific Events
The Enlarged Program of Forest Research, pp. 548-549
The Lasker Foundation for Medical Research, p. 549
Standard Mathematical Symbols, p. 549
The Week on Agriculture at the Institute of Chemistry, pp. 549-550
Charles D. Hurd
Award of the Willard Gibbs Medal to Professor W. D. Harkins, p. 550


Scientific Notes and News, pp. 550-554
University and Educational Notes, p. 554


Discussion and Correspondence
Archimedes and Trigonometry, p. 555
G. A. Miller
Reproduction Rate in Wild Rats, pp. 555-556
Paul Eaton; C. S. Stirrett
Vitamin B, p. 556
Chas. H. Hunt
What is Osmosis?, pp. 556-557
Orton K. Stark
A Note on the Preparation of Biological Specimens by Filtration of Paraffin, p. 557
Oliver P. Hay


Scientific Books
----------------, pp. 557-560
Alcohol and Longevity
Raymond Pearl
Review author[s]: W. R. Miles


Reports
The Western Cooperative Oil-Spray Project, pp. 560-561
D. F. Fisher; E. L. Green; E. J. Newcomer


Scientific Apparatus and Laboratory Methods
A Method for Cutting Glass Tubing, p. 561
J. L. St. John
An Ineffectual Attempt to Demonstrate the Vacuome of Certain Plant Cells, pp. 561-562
Bernice Burkhardt Rice


Special Articles
The Effect of X-Rays in Producing Return Gene Mutations, pp. 562-563
Frank Blair Hanson
A Spontaneous Modification of the Viscosity of Fresh Blood Serum, pp. 563-564
Lecomte du Noüy


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1743, May 25, 1928
Next Issue: New Series, Vol. 67, No. 1745, Jun. 8, 1928



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Science, New Series, Vol. 67, No. 1745, Jun. 8, 1928


Previous Issue: New Series, Vol. 67, No. 1744, Jun. 1, 1928
Next Issue: New Series, Vol. 67, No. 1746, Jun. 15, 1928


Front Matter (4 pp.)
The Theory of Chemical Action in Electrical Discharge, pp. 565-569
S. C. Lind

The Plateau Habitat of the Pro-Dawn Man, pp. 570-571
Henry Fairfield Osborn

The Use of Charts in the Natural Sciences, pp. 571-574
A. C. Noé


Scientific Events
An International Committee for Research on Infantile Paralysis, pp. 574-575
Dedication of the Santa Catalina Natural Area, p. 575
Researches and Publications of the Princeton University Expeditions to Patagonia--1896-1899, pp. 575-576
Reorganization of the Department of Zoology at Columbia University, pp. 576-577


Scientific Notes and News, pp. 577-580
University and Educational Notes, pp. 580-581


Discussion and Correspondence
The Apportionment of Representatives, pp. 581-582
Walter F. Willcox
Transplantation of the European Oyster, pp. 582-583
J. H. Orton
The Boiling-Point and the Latent Heat of Vaporization of Water, pp. 583-584
J. B. Nathanson
Coryneum Canker of Cypress, p. 584
Willis W. Wagener
More Research, pp. 584-585
James S. Stevens; W. H. Kun; E. H. McClelland
Corrections to the Biographical Directory of American Men of Science, p. 585
J. McKeen Cattell


Reports
Work Accomplished by the Field Museum Paleontological Expeditions to South America, pp. 585-587
Elmer S. Riggs


Scientific Apparatus and Laboratory Methods
Making a Correct Mechanical Analysis of Soils in Fifteen Minutes, pp. 587-588
George John Bouyoucos
A Simple Method of Picking up Correlations, pp. 588-589
Cecil D. Murray


Special Articles
A Bioelectric Potential, pp. 589-590
Samuel Gelfan
Studies on the Physiology of Ascaris Lumbricoides, p. 590
Justus F. Mueller


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1744, Jun. 1, 1928
Next Issue: New Series, Vol. 67, No. 1746, Jun. 15, 1928



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Science, New Series, Vol. 67, No. 1746, Jun. 15, 1928


Previous Issue: New Series, Vol. 67, No. 1745, Jun. 8, 1928
Next Issue: New Series, Vol. 67, No. 1747, Jun. 22, 1928


Front Matter (4 pp.)
The Pathology of Certain Virus Diseases, pp. 591-593
Ernest W. Goodpasture

Analogies between Physiological Rhythms and the Rhythmical Reactions in Inorganic Systems, pp. 593-598
Ralph S. Lillie

Joseph Nelson Rose, pp. 598-599
Wm. Trelease


Scientific Events
The Glasgow Meeting of the British Association, p. 599
Centenary of the London Zoological Society, pp. 599-600
Exhibit of Optical Instruments and Products, p. 600
I. C. Gardner
The Place of Science in Education, pp. 600-601


Scientific Notes and News, pp. 601-604
University and Educational Notes, p. 605


Discussion and Correspondence
Ovarian Secretion and Tumor Incidence, pp. 605-607
Leo Loeb
The Ring Method in Changing Surface Tension, p. 607
Lecomte DU Noüy
``Nutrilites'', pp. 607-608
Roger J. Williams
An Ancient Walrus Skull, p. 608
Birger R. Headstrom
The Royal Photographic Society, p. 608
A. J. Newton
Low Humidity and High Taciturnity, p. 608
E. A. Vuilleumier


Reports
Horizontal Versus Vertical Forces in Crustal Movements of the Earth, pp. 608-610
Joseph L. Gillson


Scientific Apparatus and Laboratory Methods
The Use of the X-Ray in Biological Investigations, pp. 610-611
Victor Pietschmann
A Convenient Method of Determining the Rate of Cleavage, pp. 611-612
E. Alfred Wolf


Special Articles
The Effect of a Secondary Sound upon Hearing, pp. 612-613
E. G. Wever
Remarkable Musical Technique of the Larger Angular-Winged Katydid, pp. 613-614
H. A. Allard


Societies and Academies, p. 614
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1745, Jun. 8, 1928
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Science, New Series, Vol. 67, No. 1747, Jun. 22, 1928


Previous Issue: New Series, Vol. 67, No. 1746, Jun. 15, 1928
Next Issue: New Series, Vol. 67, No. 1748, Jun. 29, 1928


Front Matter (4 pp.)
The Differentiation of Species, pp. 615-619
Henry E. Crampton

Research and the Training of the Researcher, pp. 619-620
T. H. Eaton

The Promotion of Knowledge of Precambrian Life, pp. 620-621
David White


Scientific Events
The Award of Prizes and Grants by the Belgian Academy of Sciences, p. 622
Exhibit of the Bingham Oceanographic Collection at Yale University, p. 622
Oklahoma Geological Survey Field Parties, p. 623
Appointments and Promotions at Harvard University, p. 623


Scientific Notes and News, pp. 624-627
University and Educational Notes, pp. 627-628


Discussion and Correspondence
Research Plus News-Gathering, pp. 628-629
Edwin E. Slosson; Watson Davis
Agronomic Jabberwocky, pp. 629-630
J. H. Kempton
Note on the Inertia Dyadic, p. 630
I. F. Morrison
A New Amphibian Record from Kansas, Hyla Phaerocrypta (Cope), pp. 630-631
Charles E. Burt
Geologic Age by Lead Uranium Ratios, p. 631
Alfred C. Lane
Datum, Data, p. 631
F. E.


Scientific Books
----------------, p. 632
Comparative Meteorology, Manual of Meteorology
Napier Shaw
Review author[s]: Alexander McAdie


Reports
Intellectual Cooperation and Biology, pp. 633-634
J. E. De Vos Van Steenwijk


Special Articles
Variation in Solar Radiation, pp. 634-635
C. G. Abbot


Societies and Academies, pp. 635-636
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 67, No. 1746, Jun. 15, 1928
Next Issue: New Series, Vol. 67, No. 1748, Jun. 29, 1928



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Science, New Series, Vol. 67, No. 1748, Jun. 29, 1928


Previous Issue: New Series, Vol. 67, No. 1747, Jun. 22, 1928
Next Issue: New Series, Vol. 68, No. 1749, Jul. 6, 1928


Front Matter (4 pp.)
The Past Twenty Years of Physical Astronomy, pp. 637-644
Walter S. Adams

Charles Henry Gilbert, pp. 644-645
David Starr Jordan


Scientific Events
The International Dairy Congress, p. 645
The Upper Klamath Wild-Life Refuge, pp. 645-646
A Foundation for the Study of Children's Diseases at Yale University, p. 646
The American Executive Committee of the World Engineering Congress, pp. 646-647


Scientific Notes and News, pp. 647-650
University and Educational Notes, pp. 650-651


Discussion and Correspondence
An Old Experiment on Collisions of the Second Kind, p. 651
J. Rud Nielsen
Another Wild Life Preserve Near Ithaca, pp. 651-652
P. W. Claassen
Ångström in English, p. 652
E. F. B. Fries
Embryoless Seeds in Cereals, p. 652
Mildred E. Lyon
The Host of the Broad Tapeworm, pp. 652-653
Thomas B. Magath


Scientific Books
----------------, p. 653
Crystallographic Tables for the Determination of Minerals
Victor Goldschmidt; Samuel G. Gordon
Review author[s]: Alfred C. Hawkins


Scientific Apparatus and Laboratory Methods
An Efficient Dehydrating Apparatus for General Use, pp. 653-654
Wilbur D. Courtney
Immobilization of Paramecium, p. 654
J. C. Boland
A Burette Cleaner, pp. 654-655
F. H. Fish


Special Articles
The Photo-Mechanical Changes in the Retina of Mammals, pp. 655-656
Gordon L. Walls
Egg Laying of Ixodiphagus Caucurtei Du Buysson in Larval Ticks, p. 656
R. A. Cooley; Glen M. Kohls


Science News, pp. x+xii+xiv

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Next Issue: New Series, Vol. 68, No. 1750, Jul. 13, 1928


Volume Information (8 pp.)
Front Matter (3 pp.)
The Biologic Aspects of Hay Fever and Asthma, pp. 1-6
Warren T. Vaughan

Edgar Fahs Smith, pp. 6-8
Walter T. Taggart


Scientific Events
A Third Expedition to the Antarctic, p. 8
Program of Research in Coal and Metallurgy at the Carnegie Institute of Technology, pp. 8-9
The Franklin Memorial in Philadelphia, p. 9
Appointments at the Rockefeller Institute for Medical Research, pp. 9-10


Scientific Notes and News, pp. 10-13
University and Educational Notes, pp. 13-14


Discussion and Correspondence
The Herediscope and Artificial Populations, p. 14
Raymond R. Willoughby
An Important Source of Broad Tapeworm in America, pp. 14-15
Teunis Vergeer
Birds of the Eurasian Tundra, p. 15
Francis Harper
Preservation of the Heath Hen, p. 15
Birger R. Headstrom
Hybrid Words, p. 15
H. W. Wiley
The Word to Replace ``Believe'', p. 15
Lloyd Van Doren


Scientific Books
----------------, p. 16
A Guide to the Constellations
Samuel G. Barton; William H. Barton
Review author[s]: Ida Barney


Scientific Apparatus and Laboratory Methods
Biochemical Experiments Practical for Elementary Biology Classes, pp. 16-18
Henry J. Fry
Marking Living Fishes for Experimental Purposes, p. 18
Ancel B. Keys


Special Articles
Association of the Causative Agent of a Chicken Tumor with a Protein Fraction of the Tumor Filtrate, pp. 18-19
James B. Murphy; O. M. Helmer; Ernest Sturm
A ``Fossil'' Camel Recently Living in Utah, pp. 19-20
Alfred S. Romer


Science News, pp. x+xii

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Previous Issue: New Series, Vol. 68, No. 1749, Jul. 6, 1928
Next Issue: New Series, Vol. 68, No. 1751, Jul. 20, 1928


Front Matter (4 pp.)
The Common Ground of the Chemist and Biologist, pp. 21-24
William Charles White

The Mechanics of Materials--A Contribution from Applied Science to Pure Science, pp. 24-29
H. F. Moore


Scientific Events
Cooperative Ethnological and Archeological Investigations between the Smithsonian Institution and State, Educational, and Scientific Institutions, pp. 29-30
C. G. Abbot
Propagation of the Giant Tortoise in the United States, p. 30
C. H. Townsend
Field Trip of Ohio Geologists, p. 30
A. C. Swinnerton
Election of Officers of the National Research Council, p. 31
Vernon Kellogg


Scientific Notes and News, pp. 31-35
University and Educational Notes, p. 35


Discussion and Correspondence
Syevernaya Zemlya (Northern Land), pp. 35-36
I. Tolmachoff
Lessons from the St. Francis Dam, pp. 36-37
Chester R. Longwell
Isontic?, p. 37
Alfred C. Lane
A Note on Astasia Captive Beauch, p. 37
Ruth B. Howland
The European Red Mite, p. 38
Birger R. Headstrom
``The Abilities of Man'', p. 38
C. Spearman


Scientific Apparatus and Laboratory Methods
A McLeod Gauge of Wide Range, pp. 38-39
A. A. Bless
A Field Photomicrographic Apparatus, p. 39
R. E. Foerster


Special Articles
The Microchemistry of Nuclear Inclusions in Virus Diseases, pp. 40-41
E. V. Cowdry
The Effects of X-Rays in Producing Mutations in the Somatic Cells of Drosophila Melanogaster, pp. 41-43
J. T. Patterson


Societies and Academies, pp. 43-44
Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1750, Jul. 13, 1928
Next Issue: New Series, Vol. 68, No. 1752, Jul. 27, 1928


Front Matter (4 pp.)
The Chemical and Physical Composition of Protoplasm, pp. 45-48
W. W. Lepeschkin

Our Search for Chlorophyll and for the Vitamins, pp. 48-53
F. M. Schertz


Scientific Events
The American Standards Association, pp. 53-54
The Study of Radiation at Cornell University, p. 54
Awards for Scientific Exhibits by the American Medical Association, pp. 54-55
National Research Fellowships in the Biological Sciences, p. 55
Frank R. Lillie


Scientific Notes and News, pp. 55-58
University and Educational Notes, p. 58


Discussion and Correspondence
The Production of Mutations by X-Rays in Habrobracon, p. 59
P. W. Whiting
Pliocene Urodeles in Western Kansas, pp. 59-60
L. A. Adams; H. T. Martin
The Albino Rat, p. 60
Olive Swezy
The Hiding Places of Tree-Frogs, pp. 60-61
Beirne B. Brues
Centers of Research, p. 61
S. R. Williams
Measurement of Rapidly Varying Surface Tension, p. 62
Victor Cofman


Scientific Apparatus and Laboratory Methods
A Weight-Driven Kymograph, pp. 62-64
Alvah R. McLaughlin


Special Articles
A New Arrangement for Showing the Diurnal Variation in the Intensity of the Earth's-Surface Charge at a Given Place, pp. 64-65
Fernando Sanford
The Bacterial Light Organ of Ceratias, pp. 65-66
Ulric Dahlgren


The American Association for the Advancement of Science
The Southwestern Division, p. 66
W. G. McGinnies


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1751, Jul. 20, 1928
Next Issue: New Series, Vol. 68, No. 1753, Aug. 3, 1928


Front Matter (4 pp.)
Count Rumford--Scientist and Philanthropist, pp. 67-73
Lyman C. Newell

Improvement in Mortality Rates and Expectation of Life in the United States from 1890 to 1920, pp. 73-75
James W. Glover


Scientific Events
The Danish Oceanographic Expedition, pp. 75-76
An International Fuel Conference, p. 76
Gifts for Medical Research at the University of Pennsylvania, pp. 76-77
Grants from the Daniel Guggenheim Fund for the Promotion of Aeronautics, p. 77


Scientific Notes and News, pp. 77-80
University and Educational Notes, p. 81


Discussion and Correspondence
Fora to Be Held as Part of the Program of the Fourth International Congress of Entomology, pp. 81-82
J. Chester Bradley
Does the Amount of Food Consumed Influence the Growth of an Animal?, pp. 82-84
H. H. Mitchell
Amoeba Dofleini (Neresheimer) Vs. Mayorella Bigemma (Schaeffer) a Case of Synonymy, pp. 84-85
Percy L. Johnson
Devonian Concretions of Western and Central New York, p. 85
A. Emil Alexander
Diving Experiment at the University of Miami, pp. 85-86
Jay F. W. Pearson
Scientific Theories, p. 86
Selden Smyser


Scientific Books
----------------, pp. 86-87
Entomologie d'Haiti
George N. Wolcott
Review author[s]: T. E. Holloway


Scientific Apparatus and Laboratory Methods
A Simple and Accurate Time Marker, pp. 87-88
Enoch Karrer; H. C. Stevens
Bacterial Filters, p. 88
S. P. Kramer


Special Articles
The Oxidative Destruction of the Agent of the Chicken Tumor I (Rous), pp. 88-89
J. Howard Mueller
Velocity of Cadmium Atoms Regularly Reflected from a Rock Salt Crystal, p. 89
A. Ellett; H. F. Olson
Staining Reactions of Fern Gametes, pp. 89-90
J. R. Jackson; H. W. Rickett


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1752, Jul. 27, 1928
Next Issue: New Series, Vol. 68, No. 1754, Aug. 10, 1928


Front Matter (4 pp.)
Science and the Press, pp. 91-100
Austin H. Clark

Research Notes from the Harvard Observatory, pp. 100-102
Harlow Shapley

Family Names, pp. 102-104
J. Chester Bradley


Scientific Events
The British Expedition in East Africa, pp. 104-105
An International Basis for Electrical Units, p. 105
Meeting of the American Public Health Association, pp. 105-106
The Fourth International Congress of Entomology, pp. 106-107
G. W. H.


Scientific Notes and News, pp. 107-110
University and Educational Notes, p. 110


Discussion and Correspondence
A Puzzling Butterfly Migration, pp. 110-111
E. D. Ball; W. E. Stone
Observations on Parturition in the Opossum Didelphys Virginiana, pp. 111-112
L. M. Dickerson
A New Rhizopus Rot of Rutabaga, p. 112
Marion L. Dawson; Alfred H. Povah
What Draws Men into Geology?, pp. 112-113
A. F. Buddington
The Earliest Dynamo, p. 113
Frederick Bedell
The Measurement of Ultra-Violet Rays, pp. 113-114
Otto Glasser


Scientific Apparatus and Laboratory Methods
A Nuclear and Differential Tissue Stain Combined, p. 114
George J. Brilmyer
Watering Potted Soil Kept Under Microbiologically Controlled Conditions, pp. 114-115
E. P. Deatrick


Special Articles
The Effects of Radium in Producing Lethal Mutations in Drosophila Melanogaster, pp. 115-116
Frank Blair Hanson; Florence M. Heys
The Nature of the Acidic Substance Formed on the Hydrolysis of Acacia, pp. 116-117
Leonard H. Cretcher; C. L. Butler
Variety of Behavior of Larval Trematodes, pp. 117-118
Harry M. Miller


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1753, Aug. 3, 1928
Next Issue: New Series, Vol. 68, No. 1755, Aug. 17, 1928


Front Matter (4 pp.)
Coral Reefs as Zonational Plant Formations, pp. 119-121
William Albert Setchell

Science and the Press, pp. 121-125
Austin H. Clark

Popular Program of the New York Meeting of the American Association, pp. 126-128
Helen Ann Warren


Scientific Events
The New Astronomical Observatory at Stockholm, p. 128
The International Fuel Conference, pp. 128-129
The Current Program of the Illinois State Geological Survey, p. 129
Dr. Smith's Collection of Chemical Memorabilia at the University of Pennsylvania, pp. 129-130


Scientific Notes and News, pp. 130-133
University and Educational Notes, pp. 133-134


Discussion and Correspondence
The Viability of Algae, pp. 134-135
Chas. H. Otis
What is the First Fossil Collected by Man?, p. 135
Louise Sudbury
Query on ``a Revision of the Fundamental Law of Habit Formation'', pp. 135-136
G. Wakeham
Geometrical Constructions on the Sphere, p. 136
H. R. Grummann


Scientific Books
----------------, pp. 136-137
The Soils of Cuba
Hugh H. Bennett
Review author[s]: Wm. Battle Cobb


Scientific Apparatus and Laboratory Methods
Extracts of Fruit Skins as Selective Nuclear Stains, p. 137
Mercy A. Southwick
A Micro-Guillotine, pp. 137-138
Morris Belkin


Special Articles
Results Secured by Applying the Feulgen Reaction to Fibroblasts and Sarcomatous Cells in Tissue Cultures, pp. 138-140
E. V. Cowdry
The Pleistocene Elephants of Santa Rosa Island, California, pp. 140-141
Chester Stock; E. L. Furlong
A Collection of Anaerobic Bacteria, pp. 141-142
Ivan C. Hall


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1753, Aug. 3, 1928
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Previous Issue: New Series, Vol. 68, No. 1754, Aug. 10, 1928
Next Issue: New Series, Vol. 68, No. 1756, Aug. 24, 1928


Front Matter (4 pp.)
Entomology, pp. 143-145
L. O. Howard

Unverified Geographic Ranges, pp. 145-149
M. L. Fernald

Pliny Earle Goddard, pp. 149-150
Franz Boas


Scientific Events
The Schlich Memorial Fund, p. 150
The Subcommittee on Science and Bibliography of the League of Nations, pp. 150-151
Motor Accidents in Great Britain, p. 151
The Bureau of Standards Journal of Research, pp. 151-152
The Glasgow Meeting of the British Association, p. 152


Scientific Notes and News, pp. 152-156
University and Educational Notes, p. 156


Discussion
An X-Ray Examination of the Anhydrous Na2SO4-Al2(SO4)3 System, pp. 156-157
F. A. Steele
Ants as Prospectors, p. 157
William Drumm Johnston
Maintaining the Standard and the Scientific Usefulness of the National Parks, pp. 157-158
Willard G. Van Name
Diction in Scientific Writings, p. 158
R. L. Edwards
A Substitute for ``Believe'', p. 158
Ellis I. Fulmer


Quotations
The Use of Lead Tetra-Ethyl, pp. 158-159


The Baking Powder Controversy, pp. 159-162
Harvey W. Wiley


Scientific Apparatus and Laboratory Methods
Ethylene Glycol as an Atmometer Reagent to Measure the Evaporating Environment at Temperatures below Freezing, pp. 162-164
A. L. Bakke; J. M. Aikman


Special Articles
The Cell Sap of Valonia and Halicystis, pp. 164-165
W. C. Cooper; L. R. Blinks
The Probable Amount of Ultra-Violet Radiation Obtained Indoors through Ultra-Violet Transmitting Glass, pp. 165-166
Janet H. Clark


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1755, Aug. 17, 1928
Next Issue: New Series, Vol. 68, No. 1757, Aug. 31, 1928


Front Matter (4 pp.)
The Art and Science of Medicine, pp. 167-171
Homer F. Swift

Quantitative Vs. Qualitative Studies in Geology, pp. 171-174
George D. Hubbard

Gentle Southwest Winds, pp. 174-176
E. B. Wilson


Scientific Events
A Chinese National Research Institute, p. 176
The British Empire Vegetation Committee, p. 176
Federal Aid to Agriculture, pp. 176-177
Research in Aviation, p. 177
An Akeley Memorial in the Belgian Congo, pp. 177-178


Scientific Notes and News, pp. 178-182
University and Educational Notes, p. 182


Discussion
Heloderma Suspectum, Automobile Tourists and Animal Distribution, pp. 182-183
Charles T. Vorhies
The Hall Effect in Single Metal Crystals, pp. 183-184
P. I. Wold
A Note on Reputed Ancient Artifacts from Frederick, Oklahoma, p. 184
Leslie Spier
An Explanation, p. 184
William Charles White
A Magnetic Storm, p. 184
George Hartnell


Scientific Apparatus and Laboratory Methods
A Rapid Method for Determining Colorimetrically the pH of Small Amounts of Solutions, p. 185
Oscar W. Richards
Automatic, Electrically Controlled, Temperature and Humidity Frames for Plant Propagation, p. 185
G. Weidman Groff


Special Articles
Mutations in Barley Induced by X-Rays and Radium, pp. 186-187
L. J. Stadler
The Nuclear Conditions in the Spermatocytes of Drosophila Melanogaster, pp. 187-188
E. C. Jeffrey


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1756, Aug. 24, 1928
Next Issue: New Series, Vol. 68, No. 1758, Sep. 7, 1928


Front Matter (4 pp.)
The Forgotten Physician, pp. 189-192
Samuel W. Lambert

A Research Delusion, pp. 192-193
George L. Peltier

Recent Developments in Quantum Mechanics, pp. 193-195
Edward U. Condon


Scientific Events
Conference of the British Association on the Preservation of Scenery, pp. 195-196
Research on Air Navigation, p. 196
The Arnold Arboretum, p. 197
The Swampscott Meeting of the American Chemical Society, pp. 197-198


Scientific Notes and News, pp. 198-202
University and Educational Notes, p. 202


Discussion and Correspondence
``Centers of Research,'' a Reply, pp. 202-203
Leonard B. Loeb; Karl T. Compton; Raymond T. Birge
Blood Pressure Depression by Light Irradiation, pp. 203-204
C. I. Reed
A Morphological Explanation for the Failure of Necturus to Metamorphose, p. 204
Frank J. Figge
Halibut Fishing, p. 204
Birger R. Headstrom
The Function of the Lateral Line Organs, p. 205
Walter Freeman


Reports
The Fourth General Assembly of the International Research Council, pp. 205-206
Charles E. St. John
Vitamin B Terminology, pp. 206-209
R. Adams Dutcher


Scientific Apparatus and Laboratory Methods
Electrical Apparatus for the Accurate Generation and Measurement of Noise and Tone, pp. 209-211
Donald M. Crawford


Special Articles
Mutation, Chromosome Non-Disjunction and the Gene, pp. 211-212
John W. Gowen
Regulating the Storage of Vitamin A in Animals that are to Be Used for the Determination of this Vitamin, p. 212
E. M. Nelson


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1757, Aug. 31, 1928
Next Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928


Front Matter (4 pp.)


The British Association for the Advancement of Science
Craftsmanship and Science, pp. 213-223
William Bragg


Joseph Edward Kirkwood, pp. 223-224
J. W. Severy


Scientific Events
The Edinburgh College of Physicians Laboratory, p. 224
The Proposed International Park, pp. 224-225
The Eclipse of May 9, 1929, p. 225
A Central Station for Experiments in Mining, pp. 225-226
The International Commission on Illumination, p. 226
The Society of Chemical Industry, pp. 226-227


Scientific Notes and News, pp. 227-229
University and Educational Notes, pp. 229-230


Discussion and Correspondence
An Extinct Hot Spring Basin in Western Utah, pp. 230-231
Murray O. Hayes; Harry N. Eaton
The Effect of Ethylene upon the Vitamin B Content of Celery, p. 231
M. F. Babb
Tuberization of Potatoes Increased by X-Rays, p. 231
Edna Louise Johnson
The Alum Question, pp. 231-232
Henry Leffmann


Quotations
Millionth Maps, p. 232


Scientific Apparatus and Laboratory Methods
A Method of Projection of Low Power Images, pp. 232-233
Stephen R. Williams
A Practical Density Demonstration, p. 233
Ralph E. Dunbar


Special Articles
The Maturation and Somatic Divisions in Hybrids, Variables and So-Called Mutants, pp. 233-235
E. C. Jeffrey
High and Low Frequency Measurements with Laminaria, p. 235
L. R. Blinks
The Absolute Zero of Internal Energy and Entropy, and the Corresponding Inertness of Matter, pp. 235-236
R. D. Kleeman


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1757, Aug. 31, 1928
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Science, New Series, Vol. 68, No. 1759, Sep. 14, 1928


Previous Issue: New Series, Vol. 68, No. 1758, Sep. 7, 1928
Next Issue: New Series, Vol. 68, No. 1760, Sep. 21, 1928


Front Matter (4 pp.)
The Fourth International Congress of Entomology, pp. 237-244
G. W. Herrick

Strategical Periods for the Encouragement of Research Students, pp. 244-245
S. R. Williams


Scientific Events
The Faculty of Medicine of the University of Lyons, p. 245
Investigation of the Great Barrier Reef, pp. 245-246
The Forest Products Laboratory of the Forest Service, p. 246
The Graduate School of the U. S. Department of Agriculture, pp. 246-247
The Conference on Bituminous Coal, pp. 247-248


Scientific Notes and News, pp. 248-251
University and Educational Notes, p. 251


Discussion
The Earliest Dynamo, pp. 251-252
Elihu Thomson
Early Gramme Machines, pp. 252-254
H. W. Wiley
The Proposed National Park in the Mammoth Cave Region and the Kentucky Geological Survey, p. 254
A. C. Swinnerton


Quotations
Chemistry in Industry, pp. 254-255


Scientific Books
----------------, pp. 255-256
Le Plateau Central de la France et sa bordure méditerranée, Etude morphologique
Henri Baulig
Review author[s]: W. M. Davis


Special Articles
The Effect of Cod Liver Oil on the Delayed Coagulation Time Following Experimental Obstructive Jaundice, pp. 256-257
John C. Brougher
Citric Acid Inversion of Sucrose in Plant Tissues, pp. 257-258
J. E. Webster; C. Dalbom
The Mutant Paramecium Aurelia, p. 258
J. A. Dawson


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1758, Sep. 7, 1928
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Science, New Series, Vol. 68, No. 1760, Sep. 21, 1928


Previous Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928
Next Issue: New Series, Vol. 68, No. 1761, Sep. 28, 1928


Front Matter (3 pp.)


The British Association for the Advancement of Science
The Relation of Physiology to Other Sciences, pp. 259-264
Charles Arthur Lovatt Evans


Geological and Archeological Records of the Yucatan Peninsula, pp. 264-265
L. G. Huntley

Lancetilla Experiment Station, pp. 265-266
Paul C. Standley


Scientific Events
Summer Work of the Geological Survey, pp. 266-267
The International Union of Pure and Applied Chemistry, p. 267
The Martin Maloney Memorial Clinic of the Medical School of the University of Pennsylvania, pp. 267-268
Lowell Institute Lectures, pp. 268-269


Scientific Notes and News, pp. 269-272
University and Educational Notes, p. 272


Discussion
The Discovery of Living Micro-Organisms in Ancient Rocks, pp. 272-273
Chas. B. Lipman
Note on the Radial Magnetic Gradient of the Sun, p. 273
Ross Gunn
The So-Called Sieve of Eratosthenes, pp. 273-274
G. A. Miller
Ectogony or Metaxenia?, p. 274
John H. Schaffner


Reports
Committee of the American Institute of Electrical Engineers, pp. 274-275
F. L. Hutchinson


Scientific Apparatus and Laboratory Methods
An Apparatus for Washing Histological Materials, p. 276
J. B. Parker


Special Articles
Diagrams Relative to Hamilton's Canonical Equations, pp. 276-277
Carl Barus
The Germ Cell Cycle of the Digenetic Trematodes, pp. 277-278
F. G. Brooks


Science News, pp. x+xii

Previous Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928
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Previous Issue: New Series, Vol. 68, No. 1760, Sep. 21, 1928
Next Issue: New Series, Vol. 68, No. 1762, Oct. 5, 1928


Front Matter (4 pp.)
Available Energy, pp. 279-284
Robert A. Millikan

The Relation of Physiology to Other Sciences--II, pp. 284-291
Charles Arthur Lovatt Evans

Memorial of Alpheus Hyatt, pp. 291-292


Scientific Events
The British Association, p. 292
The World Agricultural Census, pp. 292-293
Activities of the Rockefeller Foundation, p. 293
Tribute to Dr. W. J. Holland, pp. 293-294
Carnegie Museum


Scientific Notes and News, pp. 294-297
University and Educational Notes, pp. 297-298


Discussion and Correspondence
Sparing Action of Fat on the Anti-Neuritic Vitamin, p. 298
Herbert M. Evans; Samuel Lepkovsky
Notation in Atomic Structure, pp. 298-299
Arthur Edward Ruark; Harold C. Urey
Monolithic Soil Profiles, p. 299
J. E. Chapman
An Extinct Camel from Utah, pp. 299-300
Oliver P. Hay
Centers of Research, p. 300
G. W. Martin


Quotations
Darwin and Downe House, p. 301


A Relation between the Incidence of Common Colds and Nutritional Hydration, pp. 301-303
Frederick Hoelzel


Scientific Apparatus and Laboratory Methods
Paraffin Sections of Tissue Supravitally Stained, pp. 303-304
A. Elizabeth Adams
Color Discs in Soil Analysis, pp. 304-305
Dorothy Nickerson


Special Articles
The Structure of Boron Hydrides, pp. 305-306
Geo. Glockler
On the Spectrum of Doubly Ionized Magnesium, p. 306
J. E. Mack; R. A. Sawyer


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1760, Sep. 21, 1928
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Previous Issue: New Series, Vol. 68, No. 1761, Sep. 28, 1928
Next Issue: New Series, Vol. 68, No. 1763, Oct. 12, 1928


Front Matter (4 pp.)
Chemistry and the American Chemical Society, pp. 307-312
S. W. Parr

Francis Weld Peabody, pp. 312-315
Warfield T. Longcope


Scientific Events
Czechoslovakian Exposition, p. 315
The Charting of the Hawaiian Islands, pp. 315-316
Scientific and Technical Courses of the Bureau of Standards, p. 316
The Smithsonian Institution and Mr. Orville Wright, pp. 316-317


Scientific Notes and News, pp. 317-320
University and Educational Notes, p. 320


Discussion and Correspondence
Newton's Law of Gravitation--A Danger Signal, p. 321
H. S. Uhler
The Prairies Again, pp. 321-323
B. Shimek
On Changing Family Names, p. 323
Melville H. Hatch
Observations in Peru, p. 323
E. Willard Berry
Ethnological and Archeological Cooperative Investigation under the Smithsonian Institution, p. 324
C. G. Abbot


Quotations
Chemical Abstracts, pp. 324-325


Special Articles
Heating Effects Observed in a High Frequency Static Field, pp. 325-327
Helen R. Hosmer
Sex Sterility and the Diminutive Copulatory Organ in the Domestic Fowl, pp. 327-328
W. Franklin Dove


The American Association for the Advancement of Science
The Pomona College Meeting of the Pacific Division, pp. 328-332
Arthur G. Vestal


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1761, Sep. 28, 1928
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Previous Issue: New Series, Vol. 68, No. 1762, Oct. 5, 1928
Next Issue: New Series, Vol. 68, No. 1764, Oct. 19, 1928


Front Matter (4 pp.)
Theodore William Richards, pp. 333-339
Gregory P. Baxter

``Standards'' and the Teaching Load in Sciences, pp. 339-342
M. A. C.

The Geographical Distribution of Memberships in the National Academy of Sciences, pp. 342-343
W. W. Campbell


Scientific Events
The Centenaries of Thomas Young and Humphry Davy, p. 343
Old Maps at the British Museum, pp. 343-344
The Eriksson Prizes, p. 344
The American School of Prehistoric Research, p. 345
The Amherst Meeting of the American Astronomical Society, p. 345
Presentation of a Congressional Medal to Mr. Edison, p. 345


Scientific Notes and News, pp. 345-348
University and Educational Notes, pp. 348-349


Discussion and Correspondence
A Proposed Change of Electrochemical Nomenclature, p. 349
Malcolm Dole
An Analytical Directory of Museums, pp. 349-350
Ralph Clifton Smith
Occurrence of Germanium in Topaz, pp. 350-351
Jacob Papish
Heterothallism in the Rusts, p. 351
Frank D. Kern
The Occurrence of Opistomum Pallidium O. Schm. in the United States, p. 352
M. E. Carter
The Word Caribou, pp. 352-353
L. B. Walton
``Habit Formation'', p. 353
W. A. Noyes


Quotations
Museums and Galleries, pp. 353-354


Scientific Apparatus and Laboratory Methods
The Micro-Abraso-Tome, pp. 354-356
Brooks F. Ellis


Special Articles
Series in the Arc Spectrum of Chlorine, pp. 356-357
T. L. De Bruin; C. C. Kiess
The Relation of Certain Bacteria to the Development of Roots, pp. 357-359
A. J. Riker; W. M. Banfield; W. H. Wright; G. W. Keitt
The Mechanism of Pellet Formation in the Great Horned Owl (Bubo Virginianus), pp. 359-360
C. I. Reed; Bessie P. Reed


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1763, Oct. 12, 1928
Next Issue: New Series, Vol. 68, No. 1765, Oct. 26, 1928


Front Matter (4 pp.)
The Twenty-Third International Congress of Americanists, pp. 361-364
Franz Boas

Photosynthesis, pp. 364-367
E. C. C. Baly

Millionth Scale Map of Hispanic America, pp. 367-369
Isaiah Bowman; Raye R. Platt

Calvin Olin Esterly, pp. 369-370
Wm. E. Ritter


Scientific Events
The International Temperature Scale, p. 370
George K. Burgess
The Naval Gravity Determination Survey, pp. 370-371
C. S. Freeman
Dedication of the Shanklin Laboratory of Biology at Wesleyan University, pp. 371-372
The New York Medical Center, p. 372
The Michelson Meeting of the Optical Society of America, pp. 372-373


Scientific Notes and News, pp. 373-376
University and Educational Notes, p. 376


Discussion and Correspondence
Does Pure Iron Have Allotropic Transformations?, pp. 376-377
T. D. Yensen
Weather Prediction and Weather Control, pp. 377-378
William S. Franklin
A Further Note on the Difficulties Encountered by Land Vertebrates in Their Development, pp. 378-379
F. H. Pike
The Invention of the Dynamo, pp. 379-380
Henry Leffmann; Frederick Bedell


Quotations
A Monument to Medicine, p. 380


Scientific Apparatus and Laboratory Methods
Further Studies in Quantitative Virological Methods, pp. 380-382
H. H. McKinney


Special Articles
Human Body-Weight: I. Correlations between Body Widths and Other Physical Measurements on Young Men, pp. 382-386
W. R. Miles
A Preliminary Report on Studies of Fireblight of Apple, pp. 386-388
Paul W. Miller
Further Observations on Schistosome Dermatitis in the United States (Michigan), p. 388
W. W. Cort


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1764, Oct. 19, 1928
Next Issue: New Series, Vol. 68, No. 1766, Nov. 2, 1928


Front Matter (4 pp.)
Address of President Coolidge in Honor of Mr. Edison, pp. 389-390
The History of Elementary Mathematics in the Plimpton Library, pp. 390-395
George A. Plimpton

Andrew Henry Patterson, pp. 395-396
Otto Stuhlman


Scientific Events
Biological Farm of the Wistar Institute, p. 396
The Abbe Memorial Museum at Bar Harbor, pp. 396-397
Warren K. Moorehead
The Bond Astronomical Club, pp. 397-398
The Rumford Fund, p. 398
A. E. Kennelly
Conferring of the Congressional Medal on Mr. Edison, p. 398


Scientific Notes and News, pp. 398-401
University and Educational Notes, pp. 401-402


Discussion and Correspondence
The Conservation of Intellect, pp. 402-403
Ross Aiken Gortner
Cone-In-Cone on Concretions from the Devonian of New York, p. 403
W. A. Tarr
Winter Root Growth of Plants, pp. 403-404
F. J. Crider
An Unexplained Visual Phenomenon, p. 404
Harry S. Gradle
The Measurement of Ultra-Violet Rays, p. 404
Ernst A. Pohle; Walter S. Huxford


Scientific Books
----------------, p. 405
Die Geschlechtschromosomen. Zellen- und Befruchtungslehre
Franz Schrader
Review author[s]: T. H. M.
----------------, pp. 405-406
Foraminifera. Their Classification and Economic Use
Joseph A. Cushman
Review author[s]: Carl O. Dunbar
----------------, p. 406
Thomas Condon, Pioneer Geologist of Oregon
Ellen Condon McCornack
Review author[s]: W. D. Matthew


Scientific Apparatus and Laboratory Methods
A Gauge for Rapid Diameter Measurements, p. 406
H. B. Tukey
A Simple Fixing, Washing and Dehydrating Device, pp. 406-407
Carl G. Hartman


Special Articles
The Life Cycle of Spirocerca Sanguinolenta--A Natural Nematode Parasite of the Dog, pp. 407-409
Ernest Carroll Faust
Viscosity Changes during Early Cleavage Stages of Fundulus Eggs, pp. 409-410
Leigh Hoadley
Manganese as a Factor in Hemoglobin Building, p. 410
R. W. Titus; H. W. Cave


Science News, pp. x+xii+xiv
Back Matter (4 pp.)

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Previous Issue: New Series, Vol. 68, No. 1765, Oct. 26, 1928
Next Issue: New Series, Vol. 68, No. 1767, Nov. 9, 1928


Front Matter (4 pp.)
Physics and Vital Processes, pp. 411-419
W. F. G. Swann

Fractures and Fiords in the Faeroes, pp. 419-420
W. M. Davis


Scientific Events
The Fauna of the British Empire, pp. 420-421
A New California Wild-Life Refuge, pp. 421-422
Summer Meeting of the American Society of Plant Physiologists, p. 422
Appropriations for Research at Cornell University, pp. 422-423


Scientific Notes and News, pp. 423-425
University and Educational Notes, pp. 425-426


Discussion
The Isolation of a Bacteriolytic Principle from the Root Nodules of the Leguminoseae, p. 426
E. R. Hitchner
Some Effects on Pisum Sativum of a Lack of Calcium in the Nutrient Solution, pp. 426-427
Dorothy Day
Thermal Conductivity of Glasses Transmitting Ultra-Violet Light, p. 427
William Kunerth; William E. Berkey
Cacoepistic Scientific Terms, pp. 427-428
W. A. Hamor
``Isorropic'', p. 428
E. M. Blake
Prickly Pear Control in Australia, p. 428
Glenn W. Herrick


Quotations
The National Academy of Sciences and Harvard University, pp. 428-429


Scientific Books
----------------, pp. 429-430
Die Saeugethiere. Einführung in die Anatomie und Systematik der Recenten und fossilen Mammalia
Max Weber
Review author[s]: W. D. Matthew
----------------, p. 430
Der Sauerstoff im Eutrophen und Oligotrophen See
August Thienemann
Review author[s]: C. Juday


Scientific Apparatus and Laboratory Methods
A Photographic Method of Measuring Pitch, pp. 430-432
Milton Metfessel


Special Articles
The Influence of Minute Doses of Iodine and Iron on Growth of Rats Furnished Vitamin A Free Diet, p. 432
F. E. Chidester; A. G. Eaton; G. P. Thompson
A Genic Disturbance of Meiosis in Zea Mays, p. 433
George W. Beadle; Barbara McClintock
The Elimination of Carbon Dioxide in the Insecta, pp. 433-434
W. H. Thorpe


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1766, Nov. 2, 1928
Next Issue: New Series, Vol. 68, No. 1768, Nov. 16, 1928


Front Matter (4 pp.)
The Astrophysical Observatory of the California Institute of Technology, pp. 435-437
The Chemical Constitution of Respiration Ferment, pp. 437-443
Otto Warburg

Eugen Amandus Schwarz, p. 443
L. O. Howard


The American Association for the Advancement of Science
Headquarters Hotels and Hotel Arrangements for the Fifth New York Meeting, pp. 443-445
Burton E. Livingston


Scientific Events
Resolutions of the American Fisheries Society, pp. 445-446
Survey of the Virgin River Valley and the Boulder Dam, pp. 446-447
The International Institute of Agriculture, p. 447
Organization in the Department of Agriculture, p. 447
A National Institute of Health, pp. 447-448
Chas. H. Herty


Scientific Notes and News, pp. 448-451
University and Educational Notes, p. 451


Discussion and Correspondence
Experimental Confirmation for Sommerfeld-Fermi-Dirac Degenerate Gas Theory of Conduction Electrons, p. 452
Jesse W. M. DuMond
A Readily Detectable Sign of Ovulation in the Monkey, pp. 452-453
Carl G. Hartman
Occurrence of Faint Bleeding on a Definite Intermenstrual Day in Man, p. 453
Miriam E. Simpson; Herbert M. Evans
Intramuscular Injections Anatomically Considered, p. 454
Karl G. Zwick; O. V. Batson
Nomenclatorial Status of the Amebas Mayorella Bigemma and M. (?) Dofleini, p. 454
A. A. Schaeffer
Humidity and Song, p. 454
H. S. Reed


Quotations
Traveling Expenses and the Income Tax, pp. 454-455


Scientific Books
----------------, pp. 455-456
Animal Ecology
Charles Elton
Review author[s]: Walter P. Taylor
----------------, pp. 456-457
Les Bases Physiologiques de la Fécondation et de la Parthénogénès
Albert Dalcq
Review author[s]: Leigh Hoadley


Scientific Apparatus and Laboratory Methods
The Determination of Nitrates and Nitrogen, pp. 457-459
Emery M. Emmert
The Nephelometer in Mycology, p. 459
George Hockenyos
An Accurate Method of Taking Readings on Exceedingly Low Rock Dips, p. 459
Edwin Alfred Filmer


Special Articles
The Action of Glutathione and Hemoglobin on the Growth of Fibroblasts in Vitro, pp. 459-461
Lilian E. Baker
Zoophilous Moths, pp. 461-462
R. C. Shannon
The Functional Form of the Constant of Mass Action and Atomic Activation, p. 462
R. D. Kleeman


Science News, pp. x+xii+xiv

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Previous Issue: New Series, Vol. 68, No. 1767, Nov. 9, 1928
Next Issue: New Series, Vol. 68, No. 1769, Nov. 23, 1928


Front Matter (4 pp.)
Biology and Human Life, pp. 463-469
Edwin G. Conklin

Expedition of U. S. Coast Guard Cutter Marion to the Region of Davis Strait in 1928, pp. 469-470
Edward H. Smith


The American Association for the Advancement of Science
Grants for Research in 1929, pp. 470-471
L. G. Hoxton
The Secretaries' Conference, pp. 471-472
George T. Hargitt


Scientific Events
The George Herbert Jones Chemical Laboratory of the University of Chicago, pp. 472-473
Highway Engineering, p. 473
The American Standards Association, pp. 473-474
The Association of Consulting Chemists and Chemical Engineers, p. 474
Bibliotheca Mathematica, pp. 474-475


Scientific Notes and News, pp. 475-479
University and Educational Notes, p. 479


Discussion and Correspondence
On Nuclear Derivatives and the Lethal Action of Ultra-Violet Light, pp. 479-480
Frederick L. Gates
Nomenclature of the Accessory Food Factors, pp. 480-481
Robert L. Jones
Breeding Habits of Octopus, p. 482
Morris M. Wells
Loveland Loess: Post-Illinoian, Pre-Iowan in Age, pp. 482-483
George F. Kay


Quotations
A Watch on Disease, pp. 484-485


Scientific Books
----------------, pp. 485-486
The Mosquitoes of the Americas
Harrison G. Dyar
Review author[s]: L. O. Howard


Reports
The New England Intercollegiate Geological Excursion, pp. 486-487
Wilbur G. Foye


Scientific Apparatus and Laboratory Methods
Isopropyl Alcohol as a Preservative, pp. 487-488
Philip H. Pope
A New Process for Handling South African Platinum Ores, p. 488
Jas. Lewis Howe


Special Articles
Scattering of Quanta with Diminution of Frequency, pp. 488-490
Karl K. Darrow
The Use of Internal Pressure in Metallic Systems, pp. 490-491
Ralph A. Morgen
Dimorphism in the Developmental History of the Sex Veins of the Rabbit, pp. 491-492
Franklin P. Reagan; Margaret Tribe


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 68, No. 1769, Nov. 23, 1928


Previous Issue: New Series, Vol. 68, No. 1768, Nov. 16, 1928
Next Issue: New Series, Vol. 68, No. 1770, Nov. 30, 1928


Front Matter (4 pp.)
Phlebotomus and Oroya Fever and Verruga Peruana, pp. 493-495
Hideyo Noguchi; Raymond C. Shannon; Evelyn B. Tilden; Joseph R. Tyler


The American Association for the Advancement of Science
The Relation of Research to Wealth Production, pp. 495-497
Harrison E. Howe
Family Budgets of University Faculty Members, pp. 497-501
Jessica B. Peixotto


The Industrial Significance of Some Recent Developments in Organic Chemistry, pp. 501-503
Arthur D. Little


Scientific Events
The Life and Services of John Warren. 1874-1928, pp. 503-504
J. L. Bremer; Harvey Cushing; Walter B. Cannon
The Proposed National Institute of Health, pp. 504-505
Meeting of the Trustees of the American Museum of Natural History, p. 505
Dedication of the Engineering Laboratory of Princeton University, pp. 505-506
The American Physical Society and the University of Minnesota, p. 506


Scientific Notes and News, pp. 506-510
University and Educational Notes, pp. 510-511


Discussion and Correspondence
Physiology and Medicine, pp. 511-512
Alfred E. Cohn
Preliminary Note on the Life History of Hymenolepis Carioca, pp. 512-513
Myrna F. Jones
The Word Caribou, p. 513
F. W. Hodge


Quotations
Award of the Nobel Prize to Dr. Charles Nicolle, p. 513


Scientific Books
----------------, pp. 513-515
Astronomy and Cosmogony
J. H. Jeans
Review author[s]: B. P. Gerasimovič


Scientific Apparatus and Laboratory Methods
The Use of Fresh Pig Ovaries in the Embryological Course, pp. 515-516
Otto F. Kampmeier
Easy Sampling of Plant Tissue, p. 516
R. P. Bartholomew


Special Articles
The Leakage of Helium through Pyrex Glass at Room Temperature, pp. 516-517
G. P. Baxter; H. W. Starkweather; R. B. Ellestad
Differences Observed in the Condition of the Sea Water at the Margins of Two Opposing Tidal Currents, pp. 517-518
Thomas G. Thompson; Robert C. Miller
The Influence of CO2 Tension on the Oxygen Dissociation Curve, pp. 518-519
Valy Menkin; Miriam F. Menkin


The American Association for the Advancement of Science
The Regular Fall Meeting of the Executive Committee of the Council, pp. 519-520
Burton E. Livingston


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 68, No. 1770, Nov. 30, 1928


Previous Issue: New Series, Vol. 68, No. 1769, Nov. 23, 1928
Next Issue: New Series, Vol. 68, No. 1771, Dec. 7, 1928


Front Matter (3 pp.)
Preliminary Announcement of the Fifth New York Meeting of the American Association for the Advancement of Science and Associated Societies, pp. 521-541


Scientific Events
Forestry in Sweden, pp. 541-542
Expeditions of the Field Museum of Natural History, p. 542
Scientific Research in Government Laboratories, pp. 542-543
Bequests of the Late Payne Whitney, p. 543


Scientific Notes and News, pp. 543-545
University and Educational Notes, p. 545


Discussion
The International Union of Biological Sciences, pp. 545-547
F. A. F. C. Went


Quotations
Intellectual Cooperation, p. 547


Special Articles
Alterations of Tissue Cells in the Blood Stream, pp. 547-548
Raphael Isaacs
Aberrant Heterothallism in a Homothallic Coprinus, p. 548
John Eugene Sass


Science News, pp. x+xii

Previous Issue: New Series, Vol. 68, No. 1769, Nov. 23, 1928
Next Issue: New Series, Vol. 68, No. 1771, Dec. 7, 1928



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Science, New Series, Vol. 68, No. 1771, Dec. 7, 1928


Previous Issue: New Series, Vol. 68, No. 1770, Nov. 30, 1928
Next Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928


Front Matter (4 pp.)
The Planetesimal Hypothesis, pp. 549-559
F. R. Moulton

Of Human Interest, pp. 559-560
James G. Needham


Scientific Events
Exhibit of Minerals in Ultra-Violet Light, p. 560
Museums in the National Parks, pp. 560-561
Service of the Weather Bureau to Aviation, p. 561
Epilepsy Commission of the Harvard Medical School, pp. 561-562
Foreign Scientific Men at the U. S. Forest Products Laboratory, p. 562


Scientific Notes and News, pp. 562-565
University and Educational Notes, pp. 565-566


Discussion and Correspondence
Saving the Coconuts, pp. 566-567
T. D. A. Cockerell
``An Unexplained Visual Phenomenon'', pp. 567-568
Paul F. Gaehr; R. M. Packard
Note upon the Occurrence of Otomesostoma Auditivum (Pless.) in the United States, p. 568
J. S. Carter
Salmonella Columbensis, p. 568
Frederick W. Shaw
Inhalation the Chief Factor in Onion Or Garlic Contamination of Milk, pp. 568-569
Margaret B. MacDonald; M. Jacob


Quotations
The Control of Malaria, p. 569


Protochlorophyll, pp. 569-570
William H. Eyster

International Commission on Zoological Nomenclature Opinions 98 to 104, pp. 570-571
C. W. Stiles


Scientific Apparatus and Laboratory Methods
The Subcutaneous Lymph Sac of the Frog as a Culture Chamber, pp. 571-572
Charles E. Hadley
A Micro-Technique for Observing Oil Penetration in Citrus Leaves after Spraying, p. 572
Hugh Knight


Special Articles
On the Structure of Thymonucleic Acid, pp. 572-573
P. A. Levene; E. J. London
The Spectrum of Ionized Xenon (XeII), p. 573
C. J. Humphreys; T. L. DE Bruin
Thyroid-Fed Rats and High Room Temperatures, pp. 573-574
Raymond M. Selle


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1770, Nov. 30, 1928
Next Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928



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Science, New Series, Vol. 68, No. 1772, Dec. 14, 1928


Previous Issue: New Series, Vol. 68, No. 1771, Dec. 7, 1928
Next Issue: New Series, Vol. 68, No. 1773, Dec. 21, 1928


Front Matter (4 pp.)
Pure Science and Engineering, pp. 575-579
Augustus Trowbridge

The Apportionment Situation in Congress, pp. 579-582
Edward V. Huntington


Scientific Events
Project for an Aleutian Geographic Observatory, p. 582
The Control of Malaria, pp. 582-583
The U. S. Biological Survey, p. 583
Meetings of the American Society of Mechanical Engineers, pp. 583-584
The Activities of the Carnegie Corporation, pp. 584-585


Scientific Notes and News, pp. 585-589
University and Educational Notes, p. 589


Discussion and Correspondence
On the General Standing of Entomologists Among Men of Science in Europe, pp. 589-590
L. O. Howard
Vegetable Food as a Source of Iodine, p. 590
Roe E. Remington
Unprofitable Meteors, pp. 590-591
Heber D. Curtis
Agronomic Terminology, pp. 591-593
Carleton R. Ball


Reports
The Harvard Museums, pp. 593-594


Special Articles
A Determination of the Atomic Weight of Nitrogen Occluded in Fergusonite, pp. 594-596
H. P. Cady; Harry Unangst Beecher


The National Academy of Sciences, pp. 596-602
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1771, Dec. 7, 1928
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Science, New Series, Vol. 68, No. 1773, Dec. 21, 1928


Previous Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928
Next Issue: New Series, Vol. 68, No. 1774, Dec. 28, 1928


Front Matter (4 pp.)
Twenty-Five Years of Biochemistry, pp. 603-608
Hans Pringsheim

The Thirteenth International Physiological Congress, pp. 608-610
Thomas Chrowder Chamberlin--Teacher, Administrator, Geologist, Philosopher, pp. 610-612
H. L. Fairchild


Scientific Events
The Fifth International Botanical Congress, Cambridge, 1930, pp. 612-613
The Gorgas Memorial Institute of Tropical and Preventive Medicine, p. 613
The Biological Laboratory at Cold Spring Harbor, pp. 613-614
The American Nature Study Society, p. 614
Bertha Chapman Cady
The New York Meeting of the American Association, pp. 614-615


Scientific Notes and News, pp. 615-618
University and Educational Notes, pp. 618-619


Discussion and Correspondence
The Meaning of Vitamin A, pp. 619-620
Henry C. Sherman
The Sieve of Eratosthenes, p. 620
Florian Cajori
The Probable Usefulness of Blood-Grouping Tests in Establishing Non-Paternity, p. 620
Sanford B. Hooker; William C. Boyd
Pressure Phenomena in the Dividing Cell, pp. 620-621
Wm. Firth Wells
Hairy Mammoth Skeleton in Utah, p. 621
Geo. H. Hansen


Quotations
International Congresses, pp. 621-623


Scientific Books
----------------, p. 623
Destructive and Useful Insects; Their Habits and Control
C. L. Metcalf
Review author[s]: L. O. Howard


Reports
The Smithsonian Institution, pp. 624-625


Special Articles
The Shape of Cork Cells: A Simple Demonstration that They are Tetrakaidecahedral, pp. 625-626
Frederic T. Lewis


The National Academy of Sciences. II, pp. 626-628
Science News, pp. xiv+xvi+xviii

Previous Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928
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Science, New Series, Vol. 68, No. 1774, Dec. 28, 1928


Previous Issue: New Series, Vol. 68, No. 1773, Dec. 21, 1928
Next Issue: New Series, Vol. 69, No. 1775, Jan. 4, 1929


Front Matter (4 pp.)
The Place of Physics in the Modern World, pp. 629-635
John Zeleny

Bashford Dean, pp. 635-638
William K. Gregory


Scientific Events
Yellow Fever in Africa, p. 638
The British Institute of Radiology, pp. 638-639
The Bureau of Indian Affairs, p. 639
The U. S. Coast and Geodetic Survey and the American Engineering Council, p. 640


Scientific Notes and News, pp. 640-643
University and Educational Notes, p. 643


Discussion and Correspondence
Pyrex Glass as a Radium Container, pp. 643-644
S. C. Lind
A New Term for the 10-8 Centimeter Unit, p. 644
Edgar T. Wherry
The Excelsior Geyser, Yellowstone National Park, pp. 644-645
Edwin Linton
Intermittent Vision, pp. 645-646
C. E. Ferree


Quotations
The Minimum Living Salary of the Professor, p. 646


Scientific Apparatus and Laboratory Methods
An Egg Shell Valve, pp. 646-647
Alvah R. McLaughlin


Special Articles
The Heme Compounds in Nature and Biological Oxidations, pp. 647-648
M. L. Anson; A. E. Mirsky


The National Academy of Sciences. III, pp. 648-650
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1773, Dec. 21, 1928
Next Issue: New Series, Vol. 69, No. 1775, Jan. 4, 1929



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