Science, New Series, Vol. 63, No. 1618, Jan. 1, 1926


Previous Issue: New Series, Vol. 62, No. 1617, Dec. 25, 1925
Next Issue: New Series, Vol. 63, No. 1619, Jan. 8, 1926


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


The American Association for the Advancement of Science
Some Psychological Experiments, pp. 1-8
J. McKeen Cattell


Oceanographic Investigations of the Scripps Institution for Biological Research of the University of California, pp. 8-10
T. Wayland Vaughan

National Research Endowment, pp. 10-11


Scientific Events
Presentation of the Copley Medal of the Royal Society to Professor Einstein, pp. 11-12
The Award of Gold Medals by the American Geographical Society, pp. 12-13
Revision of Educational Methods in the Yale School of Medicine, p. 13
The 1926 Meeting of the Pacific Division of the American Association, pp. 13-14


Scientific Notes and News, pp. 14-17
University and Educational Notes, pp. 17-18


Discussion and Correspondence
Projection of Ultra-Violet Lines, p. 18
Paul F. Gaehr
Influence of Air and Sunshine on the Growth of Trees, p. 18
W. J. Spillman
An Unusual Strain of Serratia marcescens Bizio, pp. 18-19
Rachel Schreiner; Laetitia M. Snow
The Clearness of the Ohio River, pp. 19-20
Frederick Ehrenfeld


Scientific Books
----------------, pp. 20-21
The Osteology of the Reptiles
Samuel Wendell Williston
Review author[s]: Charles C. Mook


Special Articles
The Presence of Sulphate Reducing Bacteria in Oil Field Waters, pp. 21-24
Edson S. Bastin; Frank E. Greer; C. A. Merritt; Gail Moulton


Tennessee Academy of Science, p. 24
Roscoe Nunn

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 62, No. 1617, Dec. 25, 1925
Next Issue: New Series, Vol. 63, No. 1619, Jan. 8, 1926



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Science, New Series, Vol. 63, No. 1619, Jan. 8, 1926


Previous Issue: New Series, Vol. 63, No. 1618, Jan. 1, 1926
Next Issue: New Series, Vol. 63, No. 1620, Jan. 15, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Advancement of Engineering in Relation to the Advancement of Science, pp. 25-29
A. E. Kennelly
Some Psychological Experiments II, pp. 29-35
J. McKeen Cattell
A Suggested Course of Study for Medical Technicians, pp. 36-38
Walter E. King


Scientific Events
Presentation of the Royal Society Medals, pp. 38-39
The New Museum of Natural History at Yale University, p. 39
Public Lectures on Scientific and Medical Subjects, pp. 39-40
Officers of the American Association for the Advancement of Science, pp. 40-41


Scientific Notes and News, pp. 41-43
University and Educational Notes, p. 44


Discussion and Correspondence
Millikan Rays and the Acceleration of Radioactive Change, pp. 44-45
Alan W. C. Menzies; C. A. Sloat
Insect Toxicology, pp. 45-46
F. L. Campbell
The Requirement of Mathematics for College Freshmen, pp. 46-47
Horace B. English


Scientific Books
----------------, pp. 47-48
The Old Americans
A. Hrdlička
Review author[s]: Chas. B. Davenport
----------------, pp. 48-49
The Physics of the Developed Photographic Image
F. E. Ross
Review author[s]: P. G. Nutting


Scientific Apparatus and Laboratory Methods
A Dilatometer for Measuring the Hydration of Colloids, pp. 49-51
H. C. Hampton


Special Articles
Does Bacteriophage Respire?, pp. 51-52
J. Bronfenbrenner
Inheritance of Anthocyanin in Crepis, p. 52
J. L. Collins


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1618, Jan. 1, 1926
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Science, New Series, Vol. 63, No. 1620, Jan. 15, 1926


Previous Issue: New Series, Vol. 63, No. 1619, Jan. 8, 1926
Next Issue: New Series, Vol. 63, No. 1621, Jan. 22, 1926


Front Matter (3 pp.)


The American Association for the Advancement of Science
Dielectric Constant and Molecular Structure, pp. 53-58
K. T. Compton


Another Outlook on the Chemical Regulation of Respiration, pp. 58-62
Robert Gesell


Scientific Events
The Total Eclipse of the Sun of January 14, pp. 62-63
National Conference on Outdoor Recreation, p. 63
Henry B. Ward
Plans for the Development of the Department of Chemistry at the University of Chicago, p. 64
Resolutions on the Death of Dr. Albion Walter Hewlett, p. 64


Scientific Notes and News, pp. 64-67
University and Educational Notes, p. 68


Discussion and Correspondence
Simplified Literature Citations, pp. 68-69
M. C. Merrill; Chas. F. Goldthwait; Howard Lawton Knight
Is the Automobile Exterminating the Woodpecker?, pp. 69-70
Homer R. Dill
Date of Channel Trenching in the Southwest, pp. 70-71
T. T. Swift
Evolution and the University of Nebraska, p. 71
Franklin D. Barker


Scientific Books
Some Recent Botanical Publications, pp. 71-73
Review author[s]: John M. Coulter


Special Articles
On the α- and β-forms of Sugars and of Sugar Derivatives, pp. 73-74
P. A. Levene; H. A. Sobotka
Iron Bacteria, p. 74
A. C. Swinnerton


Science News, pp. x+xii

Previous Issue: New Series, Vol. 63, No. 1619, Jan. 8, 1926
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Science, New Series, Vol. 63, No. 1621, Jan. 22, 1926


Previous Issue: New Series, Vol. 63, No. 1620, Jan. 15, 1926
Next Issue: New Series, Vol. 63, No. 1622, Special Issue Containing the Reports of the Kansas City Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 29, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
Methods of Racial Analysis, pp. 75-81
E. A. Hooton


Popular Astronomic Education in Europe, pp. 81-84
G. Clyde Fisher

Edward Fuller Holden, pp. 84-85
Edward H. Kraus


Scientific Events
The Merger of the Armour Institute of Technology with Northwestern University, p. 85
The New York Zoological Society, pp. 85-86
The James Simpson-Roosevelt Expedition of the Field Museum, p. 86
The Norton Bronze Tablet at Cornell College, pp. 86-87


Scientific Notes and News, pp. 87-91
University and Educational Notes, p. 91


Discussion and Correspondence
A Note on the Humboldt Current and the Sargasso Sea, pp. 91-92
William Beebe
An Investigation of the Periodic Fluctuations in the Numbers of the Ruffed Grouse, pp. 92-93
J. C. Phillips
Gonionemus, p. 93
H. F. Perkins
The Value of Sociology, pp. 93-94
Ransom A. Mackie
The Deepest Hole, p. 94
M. E. Johnson


Scientific Books
----------------, pp. 95-96
Photoelectricity
H. Stanley Allen
Review author[s]: Herbert E. Ives


Special Articles
Remarks on Surface Distribution of Marine Plankton Diatoms in the East Pacific, pp. 96-97
W. E. Allen
Rickets, Ultra-Violet Light and Milk, pp. 97-98
John W. Gowen; J. M. Murray; M. E. Gooch; Forrest B. Ames


The Federation of American Societies for Experimental Biology, p. 98
Walter J. Meek

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1620, Jan. 15, 1926
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Science, New Series, Vol. 63, No. 1622, Special Issue Containing the Reports of the Kansas City Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 29, 1926


Previous Issue: New Series, Vol. 63, No. 1621, Jan. 22, 1926
Next Issue: New Series, Vol. 63, No. 1623, Feb. 5, 1926


Front Matter (4 pp.)
The American Association for the Advancement of Science: The First Kansas City Meeting, December 28, 1925 to January 2, 1926, pp. 99-146
Science News, pp. xxx+xxxii+xxxiv

Previous Issue: New Series, Vol. 63, No. 1621, Jan. 22, 1926
Next Issue: New Series, Vol. 63, No. 1623, Feb. 5, 1926



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Previous Issue: New Series, Vol. 63, No. 1622, Special Issue Containing the Reports of the Kansas City Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 29, 1926
Next Issue: New Series, Vol. 63, No. 1624, Feb. 12, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Smithsonian Institution, Its Function and Its Future, pp. 147-157
Austin H. Clark


Edward Sylvester Morse, pp. 157-158
William H. Dall


Scientific Events
The National Research Endowment, pp. 158-159
Appropriations for the United States Department of Agriculture, p. 159
The Guggenheim Fund for Aeronautics, p. 159
Meeting of the Southwestern Division of the American Association, pp. 159-160


Scientific Notes and News, pp. 160-164
University and Educational Notes, p. 164


Discussion and Correspondence
The Present Continued Development of Basal Shoots from Blighted Chestnut Trees, pp. 164-165
Arthur Harmount Graves
Bacterial Leafspot on Hubbard Squash, p. 165
Mary K. Bryan
Iodine in Thyroid Deficiency, pp. 165-166
Ethel D. Simpson
A Meteor Fall, p. 166
R. A. Gortner


Scientific Books
----------------, pp. 166-167
Faune de France. 10. Hyménoptéres Vespiformes. 1 (Sphegidae, Pompilidae, Scoliidae, Sapygidae, Mutillidae)
L. Berland
Review author[s]: L. O. Howard
----------------, pp. 167-168
The Organization of Life
Seba Eldridge
Review author[s]: William E. Ritter


Special Articles
Some Problems Which May Be Studied by Oxygenation, pp. 168-170
L. R. Cleveland


Societies and Academies, p. 170
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1622, Special Issue Containing the Reports of the Kansas City Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 29, 1926
Next Issue: New Series, Vol. 63, No. 1624, Feb. 12, 1926



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Science, New Series, Vol. 63, No. 1624, Feb. 12, 1926


Previous Issue: New Series, Vol. 63, No. 1623, Feb. 5, 1926
Next Issue: New Series, Vol. 63, No. 1625, Feb. 19, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Scientific Method and Authority, pp. 171-178
Edwin Linton


Platform of the Engineering Foundation, pp. 178-179
Alfred D. Flinn

Thomas Allison Smith, pp. 179-180
William C. Lusk


Scientific Events
The International Congress of Plant Sciences, p. 180
The Association of Asphalt Paving Technologists, pp. 180-181
The National Museum of Engineering and Industry, p. 181
H. F. J. Porter
Lectures on Evolution at the California Institute of Technology, pp. 181-182


Scientific Notes and News, pp. 182-186
University and Educational Notes, p. 186


Discussion and Correspondence
The Danger of Earthquakes in New England, pp. 186-187
Irving B. Crosby
A Plea for the Retention of the Term "Bios", p. 187
Margaret B. MacDonald
A Few Suggestions regarding Reprints, pp. 187-188
A. W. Meyer
Scientific Research in the United States, p. 188
J. McKeen Cattell


Quotations
The Torch of Pure Science, pp. 188-189


Scientific Books
----------------, pp. 189-190
Traité de Géographie Physique
Emmanuel de Martonne
Review author[s]: W. J. Humphreys


Special Articles
An Apparent Case of Monocentric Mitosis in Sciara (Diptera), pp. 190-191
Chas. W. Metz


Societies and Academies, pp. 191-192
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1623, Feb. 5, 1926
Next Issue: New Series, Vol. 63, No. 1625, Feb. 19, 1926



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Science, New Series, Vol. 63, No. 1625, Feb. 19, 1926


Previous Issue: New Series, Vol. 63, No. 1624, Feb. 12, 1926
Next Issue: New Series, Vol. 63, No. 1626, Feb. 26, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Earliest Known American Arithmetic, pp. 193-195
Louis C. Karpinski
The Scientific Method and Authority. II, pp. 195-201
Edwin Linton


Ellsworth Bethel, pp. 201-202
T. D. A. Cockerell


Scientific Events
The Fourteenth International Geological Congress, pp. 202-203
Exhibition of Medical Education at Cincinnati, p. 203
Legislation against the Teaching of Evolution, pp. 203-204
The American Institute of Electrical Engineers, p. 204
The Southwestern Division of the American Association for the Advancement of Science, pp. 204-205


Scientific Notes and News, pp. 205-208
University and Educational Notes, p. 208


Discussion and Correspondence
Support of the U. S. Geological Survey and Other Cooperating Agencies, pp. 208-209
M. M. Leighton
Evolution and the University of Nebraska, p. 209
Henry Fairfield Osborn
Losses in Trout Fry after Distribution, pp. 209-210
A. P. Knight
Work on Sphenodon, p. 210
C. C. Nutting
The Fourth Edition of the Biographical Directory of the American Men of Science, pp. 210-211
J. McKeen Cattell


Scientific Books
----------------, p. 211
Ancient Hunters and Their Modern Representatives
W. J. Sollas
Review author[s]: George Grant MacCurdy


Scientific Apparatus and Laboratory Methods
A Simple Method for Making Differential Counts of Small Spores, pp. 211-212
Frank P. McWhorter
Culture Medium for the Ciliate Lacrymaria, p. 212
Y. Ibara


Special Articles
A Preliminary Report on the Cultivation of the Microbe of Oroya Fever, pp. 212-213
Hideyo Noguchi; Telemaco S. Battistini
Seasonal and Regional Variations in Curly-Top of Sugar Beets, pp. 213-214
Eubanks Carsner


Societies and Academies, p. 214
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1624, Feb. 12, 1926
Next Issue: New Series, Vol. 63, No. 1626, Feb. 26, 1926



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Science, New Series, Vol. 63, No. 1626, Feb. 26, 1926


Previous Issue: New Series, Vol. 63, No. 1625, Feb. 19, 1926
Next Issue: New Series, Vol. 63, No. 1627, Mar. 5, 1926


Front Matter (4 pp.)
Isolation or Cooperation in Research, pp. 215-218
Vernon Kellogg

The Scope of Bibliographies, pp. 218-221
J. Strohl

Carlos Werckle, pp. 221-223
Paul C. Standley


Scientific Events
The Rumford Fund, p. 223
A. E. Kennelly
The New Metallurgical Laboratories at the Pittsburgh Experiment Station, pp. 223-224
The Britten Bill to Extend the Use of the Metric System in the United States, pp. 224-225
Resolutions on the Freedom of Teaching, p. 225
Geological Sciences at Pasadena, p. 225


Scientific Notes and News, pp. 225-229
University and Educational Notes, p. 229


Discussion and Correspondence
Morbidity of the American Indians, pp. 229-231
Haven Emerson
The Brown's Park Formation, p. 231
O. A. Peterson
The Quotation of Scientific References, p. 231
Henry Leffmann
Literature Citations, pp. 231-232
Paul Hanly Furfey


Scientific Books
----------------, pp. 232-233
Annals of Eugenics: A Journal for the Scientific Study of Racial Problems
Review author[s]: S. J. Holmes


Scientific Apparatus and Laboratory Methods
New Methods to Measure the Rate of Flow Produced by the Gills of Oyster and Other Molluscs, pp. 233-234
Paul S. Galtsoff


Special Articles
Displaced Series in the Spectrum of Chromium, pp. 234-236
C. C. Kiess; O. Laporte
The Perfect Stage of Cylindrosporium Pomi, p. 236
R. C. Walton; C. R. Orton


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1625, Feb. 19, 1926
Next Issue: New Series, Vol. 63, No. 1627, Mar. 5, 1926



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Science, New Series, Vol. 63, No. 1627, Mar. 5, 1926


Previous Issue: New Series, Vol. 63, No. 1626, Feb. 26, 1926
Next Issue: New Series, Vol. 63, No. 1628, Mar. 12, 1926


Front Matter (4 pp.)
Address on the Occasion of the Dedication of the New Hospital of the University of Michigan, pp. 237-242
W. S. Thayer

The Figure of the Earth and the New International Ellipsoid of Reference, pp. 242-248
Walter D. Lambert

Charles Vancouver Piper, pp. 248-249
A. J. Pieters

Samuel Marx Barton, p. 249
Joseph K. Roberts


Scientific Events
The Smithsonian-Chrysler Expedition to Africa, p. 249
A Field Course in Geology at Princeton University, pp. 249-250
Endowment for the Henry Phipps Institute, p. 250
Regional Meeting of the American Chemical Society at Madison, pp. 250-251
A Scientific Study of Educational Work in Mississippi, p. 251


Scientific Notes and News, pp. 251-255
University and Educational Notes, p. 255


Discussion and Correspondence
Bleached Flour and Neutralized Cream, pp. 255-258
Charles H. Briggs; C. H. Eckles; H. W. Wiley
Science Not in It, p. 258
Edwin E. Slosson
Letter to the Editor of Science from the Principal Scientific Authority of the Fundamentalists, p. 259
George McCready Price


Scientific Books
----------------, pp. 259-260
The Natural History of Crystals
A. E. Hutton
The Structure of Crystals
R. W. G. Wyckoff
X-Rays and Crystal Structure
W. H.; W. L. Bragg
Review author[s]: Wheeler P. Davey


Special Articles
Pleistocene Features of Southern New England, pp. 260-262
H. L. Fairchild
Light Localization in Ctenophores, p. 262
Yo K. Okada


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1626, Feb. 26, 1926
Next Issue: New Series, Vol. 63, No. 1628, Mar. 12, 1926



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Science, New Series, Vol. 63, No. 1628, Mar. 12, 1926


Previous Issue: New Series, Vol. 63, No. 1627, Mar. 5, 1926
Next Issue: New Series, Vol. 63, No. 1629, Mar. 19, 1926


Front Matter (4 pp.)
Do We Live in a Spiral Nebula?, pp. 263-267
W. W. Campbell

What Is the Significance of Transpiration?, pp. 267-271
Otis F. Curtis

The Naples Zoological Station, p. 271
E. B. W.

Dr. Welch and the Johns Hopkins University, pp. 272-273
Simon Flexner


Scientific Events
Site for New Solar Observation Station of the Smithsonian Astrophysical Observatory, p. 273
The Tulsa Meeting of the American Chemical Society, pp. 273-274
The Morden-Clark Asiatic Expedition of the American Museum, pp. 274-275
The World's Poultry Congress, p. 275
Resolution on the Death of Charles Avery Doremus, pp. 275-276


Scientific Notes and News, pp. 276-278
University and Educational Notes, pp. 278-279


Discussion and Correspondence
Scientists and the Income Tax, pp. 279-280
Rodney H. True
Edward Sylvester Morse, p. 280
H. W. Wiley
The Amateur Scientist in the Academic World, pp. 280-281
Norris W. Rakestraw
Dean Inge on the Relation between Science and Religion Today, pp. 281-282
Neil E. Stevens


Scientific Books
----------------, pp. 282-283
Climatic Laws: A Summary of Climate
Stephen Sargent Visher
Review author[s]: Burton M. Varney


Scientific Apparatus and Laboratory Methods
Application of the Microscope to Galvanometry, pp. 283-284
Paul Kirkpatrick


Special Articles
An Hypothesis on Cell Structure and Cell Movements Based on Thermodynamical Considerations, pp. 284-286
P. Lecomte du Nouy
A New Area of Carboniferous Rocks in Mexico, pp. 286-287
George H. Girty


The Association of American Geographers, pp. 287-288
Chas. C. Colby

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1627, Mar. 5, 1926
Next Issue: New Series, Vol. 63, No. 1629, Mar. 19, 1926



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Science, New Series, Vol. 63, No. 1629, Mar. 19, 1926


Previous Issue: New Series, Vol. 63, No. 1628, Mar. 12, 1926
Next Issue: New Series, Vol. 63, No. 1630, Mar. 26, 1926


Front Matter (4 pp.)
Statistical Inference, pp. 289-296
Edwin Bidwell Wilson

Biological Research at the Scripps Institution of Oceanography, p. 297
T. Wayland Vaughan

Roger Webb Gannett, pp. 297-298
S. G. Bergquist


Scientific Events
Russian Scientific Activities, p. 298
J. B. S. Haldane and the University of Cambridge, pp. 298-299
The Ella Sachs Plotz Foundation for the Advancement of Scientific Investigation, p. 299
Research in Cerebral Physiology at the University of Iowa, pp. 299-300
American School of Prehistoric Research, p. 300


Scientific Notes and News, pp. 300-305
University and Educational Notes, p. 305


Discussion and Correspondence
Black Chaff of Wheat in Russia, pp. 305-307
Erwin F. Smith
A Seismological Note, p. 307
Perry Byerly
The Treatment of Wart Disease of Potatoes with Sulphur, pp. 307-308
W. A. Roach; Wm. B. Brierley
The Attitude of the Electrical Railway Companies on Electrolysis, pp. 308-309
Ira D. Van Giesen


Scientific Books
----------------, pp. 309-310
J. C. Poggendorff's Biographisch-literarisches Handwörterbuch für Mathematik, Astronomie, Physik, Chemie und verwandte Wissenschaftsgebiete
P. Weinmeister
Review author[s]: Felix Neumann
----------------, p. 310
Eleventh Report of the Committee for the Investigation of Atmospheric Pollution. Observations in the Year Ended March 31, 1925
Review author[s]: A. McAdie


Special Articles
The Ions of Inert Gases as Catalysts, pp. 310-311
S. C. Lind; D. C. Bardwell
The New Status of Net Energy Determination, pp. 311-313
E. B. Forbes
Some Ecological Relations of the Hypogaeous Fungi, pp. 313-315
William Albert Setchell; Martha Gertrude Watson


Societies and Academies, pp. 315-316
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1628, Mar. 12, 1926
Next Issue: New Series, Vol. 63, No. 1630, Mar. 26, 1926



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Science, New Series, Vol. 63, No. 1630, Mar. 26, 1926


Previous Issue: New Series, Vol. 63, No. 1629, Mar. 19, 1926
Next Issue: New Series, Vol. 63, No. 1631, Apr. 2, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Intellectual Worker, pp. 317-321
William MacDonald
Problems of a Scientific Investigator, pp. 321-324
Byron Cummings
Cooperation in Research, pp. 324-327
Frank E. E. Germann


Eric Knight Jordan 1903-1926, p. 327
Albert Guerard


Scientific Events
Meeting of the International Electrotechnical Commission, pp. 327-328
An Eastern Section of the Seismological Society of America, p. 328
Work of the Committee of the National Research Council on the Atmosphere and Man, pp. 328-329
Expeditions of the American Museum of Natural History, p. 329
The Daniel Giraud Elliot Medal, pp. 329-330
Henry Fairfield Osborn; Charles D. Walcott; Frederic A. Lucas


Scientific Notes and News, pp. 330-333
University and Educational Notes, pp. 333-334


Discussion and Correspondence
The Life History of a Fake!, pp. 334-335
Chas. W. Hargitt
The S. T. Darling Memorial Prize, p. 335
Th. Madsen
Special Characters for the Typewriter, p. 335
Edward Pierce Hulse
Distribution of Hymenophysa pubescens, p. 335
B. A. Walpole


Quotations
A British Science News Service, pp. 335-336
C. W. H.


Scientific Books
----------------, pp. 336-337
Astronomical Physics
F. J. M. Stratton
Review author[s]: Ralph E. Wilson
----------------, pp. 337-338
Bats, Mosquitoes and Dollars
Charles A. R. Campbell
Review author[s]: Tracy I. Storer


Special Articles
Application of the Generic Name Phyllocoenia Milne Edwards and Haime and the International Code of Zoological Nomenclature, pp. 338-339
T. Wayland Vaughan
A Neglected Capillarity Effect, p. 339
F. M. Denton


The American Society for Experimental Pathology, pp. 339-340
E. B. Krumbhaar

Science News, pp. x+xii+xiv
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 63, No. 1629, Mar. 19, 1926
Next Issue: New Series, Vol. 63, No. 1631, Apr. 2, 1926



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Science, New Series, Vol. 63, No. 1631, Apr. 2, 1926


Previous Issue: New Series, Vol. 63, No. 1630, Mar. 26, 1926
Next Issue: New Series, Vol. 63, No. 1632, Apr. 9, 1926


Front Matter (4 pp.)


The American Association for the Advancement of Science
Securing Disease Resistant Plants: How Important Is It? Whose Job Is It?, pp. 341-345
L. R. Jones


Chemistry and Pure Science, pp. 345-347
B. B. Boltwood

Opening of the Astronomic Hall of the American Museum, pp. 347-348
Clyde Fisher

Filibert Roth, pp. 348-349
Dow V. Baxter


Scientific Events
Awards from the Milton Fund at Harvard University, pp. 349-350
Congressional Legislation on Agricultural Matters, p. 350
The Evolution of Man, pp. 350-351
Third Pan-Pacific Science Congress, p. 351


Scientific Notes and News, pp. 351-355
University and Educational Notes, p. 355


Discussion and Correspondence
Sensitive Flames, pp. 355-357
Arthur Taber Jones
The Venom of New-Born Copperheads, p. 357
Albert M. Reese
Graduate Work in Horticulture, pp. 357-358
John W. Crist
Is the Automobile Exterminating the Woodpecker? Comment, pp. 358-359
Henry I. Baldwin
Human Tails--A Statement and a Correction, pp. 359-360
W. W. Keen


Scientific Books
The Evolution Controversy, pp. 360-361
Evolution not Irreligious. Some General Aspects of Evolution and Its Relations to Religion
Walter C. Kraatz
The Tennessee Evolution Case
Robert S. Keebler
Review author[s]: David Starr Jordan
Saccardo's "Sylloge Fungorum", p. 361
Review author[s]: William Trelease


International Commission on Zoological Nomenclature, pp. 361-362
C. W. Stiles


Scientific Apparatus and Laboratory Methods
A Black Collodion Coating for Atmometer Spheres, pp. 362-363
Burton E. Livingston; J. Dean Wilson
A New Spiral Gas-Washing Bottle, pp. 363-364
Lowell H. Milligan


Special Articles
Some Features of Structure and Behavior in Vampyrella lateritia, pp. 364-365
Francis E. Lloyd
A New Conception of the Formation of Arylguanidines and Arylisothiocyanates from Arylthioureas, p. 366
Treat B. Johnson


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1630, Mar. 26, 1926
Next Issue: New Series, Vol. 63, No. 1632, Apr. 9, 1926



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Science, New Series, Vol. 63, No. 1632, Apr. 9, 1926


Previous Issue: New Series, Vol. 63, No. 1631, Apr. 2, 1926
Next Issue: New Series, Vol. 63, No. 1633, Apr. 16, 1926


Front Matter (4 pp.)


Southwestern Division of the American Association for the Advancement of Science
The Duty of Biology, pp. 367-371
T. D. A. Cockerell


Notes on the Airy or "Roots of Mountains" Theory, pp. 371-374
William Bowie

Ira Osborn Baker, pp. 374-375


Scientific Events
Elections of the Royal Society of Edinburgh, p. 375
Work of the International Education Board, pp. 375-376
The Chicago Meeting of the American Electrochemical Society, p. 376
Chemistry at New York University, pp. 376-377


Scientific Notes and News, pp. 377-381
University and Educational Notes, p. 381


Discussion and Correspondence
Distribution of Intensity in the Focal Spot of an X-Ray Tube, p. 382
C. D. Cooksey; D. Cooksey
CO Bands, pp. 382-383
D. C. Duncan
Another Luminous Spider, p. 383
Barnum Brown
The Methods of the Fundamentalists, p. 383
E. T. Brewster


Scientific Books
----------------, pp. 383-384
Left-Handedness
Beaufort Sims Parson
Review author[s]: Stevenson Smith


Special Articles
Questionnaire on Certain Facts Bearing on the Theory of Sexuality and Chromosome Constitution, pp. 384-385
John H. Schaffner
Why Do Ciliated Animals Rotate Counter-Clockwise While Swimming?, pp. 385-386
Edward E. Wildman


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1631, Apr. 2, 1926
Next Issue: New Series, Vol. 63, No. 1633, Apr. 16, 1926



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Science, New Series, Vol. 63, No. 1633, Apr. 16, 1926


Previous Issue: New Series, Vol. 63, No. 1632, Apr. 9, 1926
Next Issue: New Series, Vol. 63, No. 1634, Apr. 23, 1926


Front Matter (4 pp.)
Centennial of the Undulatory Theory of Light, pp. 387-393
Paul S. Epstein

The Condition and Needs of Systematic Mycology, pp. 393-395
C. L. Shear; F. E. Clements


Scientific Events
Expedition to Central America to Study the Hookworm Disease, p. 395
National Research Fellowships in the Biological Sciences, pp. 395-396
Oil and Gas Power National Conference, p. 396
The Oxford Meeting of the British Association, pp. 396-397


Scientific Notes and News, pp. 397-401
University and Educational Notes, p. 401


Discussion and Correspondence
The Isolation of Insulin, pp. 401-402
Casimir Funk
Mount Jordan, p. 402
David Starr Jordan
The Price of Honor, pp. 402-403
Ph. D.
Eugenothenics, p. 403
William M. Goldsmith


Quotations
Research and Teaching, pp. 403-404


Scientific Apparatus and Laboratory Methods
A Modified Constant-Level Regulating Device, p. 404
R. L. Stehle
An Improved Mcleod Gauge, pp. 404-405
Bradford Noyes


Special Articles
Excitation Potentials of the Spectra Argon II and Neon II, p. 405
F. L. Mohler
Sand Flotation in Nature, pp. 405-406
Chas. H. Behre


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 63, No. 1634, Apr. 23, 1926


Previous Issue: New Series, Vol. 63, No. 1633, Apr. 16, 1926
Next Issue: New Series, Vol. 63, No. 1635, Apr. 30, 1926


Front Matter (4 pp.)
Qua Vadimus?, pp. 407-414
Ernst Cohen

So-Called Volcanic Earth-Quakes, pp. 414-415
T. A. Jaggar

New York City as a Field for Earthquake Study, pp. 415-418
Chester A. Reeds

William E. Safford, p. 418
Will C. Barnes


Scientific Events
Development of the Biological Laboratory at Cold Spring Harbor, p. 419
The Mellon Lectures at the University of Pittsburgh, p. 419
Grants from the Elizabeth Thompson Science Fund, pp. 419-420
Resignations in the Department of Dermatology at Columbia University, pp. 420-421
The Madrid Meeting of the International Geological Congress, p. 421


Scientific Notes and News, pp. 422-424
University and Educational Notes, p. 425


Discussion and Correspondence
Maps for the International Geological Congress at Madrid, pp. 425-426
Richard M. Field
Science Service and the Location of Earthquake Epicenters, p. 426
Watson Davis
The Automobile and Wild Life, pp. 426-427
W. P. Flint
On Einstein's Theory of Relativity, pp. 427-428
Charles L. R. E. Menges
Iodine in Thyroid Deficiency, p. 428
Gilbert D. Harris


Scientific Books
----------------, pp. 428-430
The Biology of Fishes
Henry M. Kyle
Review author[s]: David Starr Jordan


Special Articles
On the Equilibrium between the Enamel of the Teeth and the Saliva, pp. 430-431
J. F. McClendon
Fluorides vs. Fluosilicates as Insecticides, pp. 431-432
R. C. Roark


The Tulsa Meeting of the American Chemical Society, p. 432
Charles L. Parsons

Science News, pp. x+xii+xiv

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Science, New Series, Vol. 63, No. 1635, Apr. 30, 1926


Previous Issue: New Series, Vol. 63, No. 1634, Apr. 23, 1926
Next Issue: New Series, Vol. 63, No. 1636, May 7, 1926


Front Matter (4 pp.)
Significance of the Ether-Drift Experiments of 1925 at Mount Wilson, pp. 433-443
Dayton C. Miller

Existing Practices of Polluting Public Water Courses, pp. 443-446
George Wilton Field

Awards of the John Simon Guggenheim Memorial Fellowships, pp. 446-448


Scientific Events
The Oceanographic Station at Salammbo, North Africa, p. 448
C. L. Bristol
The Rawson-Macmillan Sub-Arctic Expedition of the Field Museum, pp. 448-449
The First Meeting of the Eastern Section of the Seismological Society of America, p. 449
Tribute to Professor Charles Schuchert, p. 450
Wesley R. Coe; Carl O. Dunbar; William E. Ford; Richard S. Lull; George G. MacCurdy; Malcolm R. Thorpe; Eleanore W. Parmelee


Scientific Notes and News, pp. 450-453
University and Educational Notes, p. 454


Discussion and Correspondence
The Habits of the Grunion, p. 454
David Starr Jordan
Adsorption Mechanisms, pp. 454-455
Maurice L. Huggins; John Field
Who Discovered Vitamines?, pp. 455-456
Casimir Funk
Citations of Scientific Literature, pp. 456-457
Edwin G. Boring; E. W. Gifford
Railroad Passes for Scientific Work, p. 457
Herbert W. Rogers


Scientific Books
----------------, pp. 457-458
Mosquitoes of Surinam--A Study in Neotropical Mosquitoes
C. Bonne; J. Bonne-Wepster
Review author[s]: L. O. Howard; Harrison G. Dyar


Scientific Apparatus and Laboratory Methods
A Simple Method for Observation of the Living Chick Embryo, pp. 458-459
T. C. Byerly


Special Articles
The Origin of Vacuoles, pp. 459-460
F. E. Lloyd; G. W. Scarth
The Transfer of Excited Energy from Ozone to Hydrogen and Nitrogen, pp. 460-462
A. C. Grubb


Science News, pp. x+xii+xiv

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Next Issue: New Series, Vol. 63, No. 1636, May 7, 1926



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Science, New Series, Vol. 63, No. 1636, May 7, 1926


Previous Issue: New Series, Vol. 63, No. 1635, Apr. 30, 1926
Next Issue: New Series, Vol. 63, No. 1637, May 14, 1926


Front Matter (4 pp.)
The Value of Outrageous Geological Hypotheses, pp. 463-468
W. M. Davis

Opportunities for Research at the Oceanographical Institute of Monaco, pp. 468-469
D. Atherton Seidell


Scientific Events
Award of Fellowships by the Charles A. Coffin Foundation, pp. 469-470
Gifts to the Case School of Applied Science, p. 470
The New Solar Observatory in Southwest Africa, p. 470
The Mills College Meeting of the Pacific Division, American Association, pp. 470-471


Scientific Notes and News, pp. 471-475
University and Educational Notes, p. 475


Discussion and Correspondence
Antaeus, Or the Future of Geology, pp. 475-476
Edward W. Berry
Upper Pleistocene Occurrence along the Oaxaca Coast of Mexico, p. 476
R. H. Palmer
Conservation of Our Native Chestnut, pp. 476-477
Arthur Pierson Kelley
Special Characters for the Typewriter, p. 477
Ad Infinitum
The University of Washington and Fisheries Research, p. 477
John N. Cobb


Scientific Books
----------------, pp. 477-478
Researches of the Department of Terrestrial Magnetism
Review author[s]: N. H. Heck
----------------, pp. 478-479
Sermons of a Chemist
Edwin E. Slosson
Review author[s]: David Starr Jordan


Special Articles
Asexual Reproduction without Loss of Vitality in Malarial Organisms, pp. 479-480
R. W. Hegner
Ceramic Pigments of the Indians of the Southwest, pp. 480-482
Frank E. E. Germann


The National Academy of Sciences, pp. 482-486
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1635, Apr. 30, 1926
Next Issue: New Series, Vol. 63, No. 1637, May 14, 1926



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Science, New Series, Vol. 63, No. 1637, May 14, 1926


Previous Issue: New Series, Vol. 63, No. 1636, May 7, 1926
Next Issue: New Series, Vol. 63, No. 1638, May 21, 1926


Front Matter (4 pp.)
The History of Organic Evolution, pp. 487-491
John M. Coulter

Barro Colorado Island Biological Station, pp. 491-493
Vernon Kellogg

Douglas Stewart, pp. 493-494
W.J.H.


Scientific Events
Awards of Prizes by the Royal College of Surgeons, p. 494
The Fifth International Conference of Soil Science, pp. 494-495
Installation of a Chapter of Sigma Xi at Cincinnati, p. 495
Award of Medals by the Franklin Institute, p. 495


Scientific Notes and News, pp. 496-499
University and Educational Notes, p. 499


Discussion and Correspondence
The Albatross II, p. 500
Henry B. Bigelow
Spermatogenesis in Icerya purchasi--A Correction, pp. 500-501
S. Hughes-Schrader
The Nomenclature of Organic Compounds, p. 501
Paul M. Dean
Domestic Cats for Dissection, p. 501
A. M. Reese
The Proposed Ransom Memorial, pp. 501-502
Eloise B. Cram


Scientific Books
----------------, pp. 502-503
The Surface History of the Earth
John Joly
Review author[s]: Charles Schuchert


Special Articles
The Differentiation of Herpetomonads and Leishmanias by Biological Tests, pp. 503-504
Hideyo Noguchi
Gyromagnetic Electrons and a Classical Theory of Atomic Structure and Radiation, p. 504
Louis V. King


The National Academy of Sciences, pp. 505-506
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1636, May 7, 1926
Next Issue: New Series, Vol. 63, No. 1638, May 21, 1926



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Science, New Series, Vol. 63, No. 1638, May 21, 1926


Previous Issue: New Series, Vol. 63, No. 1637, May 14, 1926
Next Issue: New Series, Vol. 63, No. 1639, May 28, 1926


Front Matter (4 pp.)
Arthur Robertson Cushny and Pharmacology, pp. 507-515
John J. Abel

The Department of Tropical Research of the New York Zoological Society, pp. 515-516
William Beebe

The Brooklyn Botanic Garden, pp. 516-517


Scientific Events
The Harvard Expedition to Africa, pp. 517-518
A Preliminary Conference on University Research, p. 518
Awards of the Lapham Medals of the Wisconsin Archeological Society, pp. 518-519
National Research Fellows in the Medical Sciences, p. 519


Scientific Notes and News, pp. 519-523
University and Educational Notes, p. 523


Discussion and Correspondence
The Contractile Vacuole Granules in Amoeba Proteus, pp. 523-524
Digestion of Wood by the Shipworm, p. 524
Robert C. Miller; Lyman C. Boynton
Woodpeckers and the Automobile, p. 524
Freeman F. Burr
Annual Exhibition of the Royal Photography Society, pp. 524-525
A. J. Newton
Request for Data on the Twilight Song of the Wood Pewee, p. 525
Wallace Craig


Scientific Books
----------------, pp. 525-526
Manual of Injurious Insects
Glenn W. Herrick
Review author[s]: L. O. Howard


Scientific Apparatus and Laboratory Methods
A Method of Demonstrating the Embryonic Membranes of the Chick, pp. 526-527
Ernest B. Hanan
Demonstrating the Askenasy Experiment, p. 527
C. H. Arndt


Special Articles
Dewbows by Moonlight, pp. 527-528
Maurice Ewing


The National Academy of Sciences, pp. 528-530
Science News, pp. xii+xiv+xvi

Previous Issue: New Series, Vol. 63, No. 1637, May 14, 1926
Next Issue: New Series, Vol. 63, No. 1639, May 28, 1926



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Science, New Series, Vol. 63, No. 1639, May 28, 1926


Previous Issue: New Series, Vol. 63, No. 1638, May 21, 1926
Next Issue: New Series, Vol. 63, No. 1640, Jun. 4, 1926


Front Matter (5 pp.)
William Bateson, pp. 531-535
T. H. Morgan

The Relation of Mapping to Modern Civilization, pp. 535-538
E. Lester Jones


Scientific Events
Dutch Exploration in Central Borneo, p. 538
The American Museum Expedition to Greenland, pp. 538-539
An International Organization for Standardization, p. 539
Chemical Warfare Service Consultants, pp. 539-540


Scientific Notes and News, pp. 540-544
University and Educational Notes, p. 544


Discussion and Correspondence
The Case of Astacus, 1775, vs. Potamobius, 1819, pp. 544-545
C. W. Stiles; Clara Edith Baker
The Decomposition of Certain Toxins by Known Organisms, p. 545
Wright A. Gardner
Cavallini's "Asexual Cycle in Arcella", pp. 545-546
Bruce D. Reynolds
The Tropical Research Station of the New York Zoological Society, p. 546
Jay F. W. Pearson


Scientific Books
----------------, pp. 546-548
Taxidermy and Museum Exhibition
John Rowley
Review author[s]: J. Grinnell


Special Articles
Are Dromatherium and Microconodon Mammals?, pp. 548-549
George Gaylord Simpson
Viability of Desiccated or Glycerinated Cells of a Chicken Sarcoma, pp. 549-550
Waro Nakahara
The Magnetic Properties of Atoms, pp. 550-551
Jacob Kunz; John B. Taylor; Worth H. Rodebush


American Association for the Advancement of Science, pp. 551-552
Burton E. Livingston

Science News, pp. x+xii+xiv+xvi

Previous Issue: New Series, Vol. 63, No. 1638, May 21, 1926
Next Issue: New Series, Vol. 63, No. 1640, Jun. 4, 1926



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Science, New Series, Vol. 63, No. 1640, Jun. 4, 1926


Previous Issue: New Series, Vol. 63, No. 1639, May 28, 1926
Next Issue: New Series, Vol. 63, No. 1641, Jun. 11, 1926


Front Matter (4 pp.)
The Algebraic Numbers and Division, pp. 553-558
J. C. Fields

Conversations with European Mycologists, pp. 558-560
J. C. Arthur; F. D. Kern

Herbert Franklin Davison, p. 561
X


Scientific Events
The Science Exhibition at the Philadelphia Meeting of the American Association, pp. 561-562
Burton E. Livingston
Fiftieth Anniversary Celebration of the Founding of the Johns Hopkins University, pp. 562-563
A Survey of Forestry Research under the National Academy of Sciences, p. 563
Appointment to the Non-Resident Lectureship in Chemistry at Cornell, pp. 563-564


Scientific Notes and News, pp. 564-567
University and Educational Notes, p. 567


Discussion and Correspondence
Why the Temperature of the Air Decreases with Increase of Height, pp. 567-569
W. J. Humphreys
Concerning Authority and the Scientific Method, pp. 569-570
Edwin Linton
The Master's Degree and Scientific Research, pp. 570-571
N. M. Grier
Sand Flotation, p. 571
Edwin H. Hall
Request for Publications in the Field of Atmospheric Electricity, p. 571
H. Benndorf; V. F. Hess


Scientific Books
----------------, pp. 571-572
Researches on Fungi. Vol. III, The Production and Liberation of Spores in Hymenomycetes and Uredineae
A. H. Reginald Buller
Review author[s]: G. P. C.
----------------, p. 572
Tales of Fishing in Virgin Seas
Zane Grey
Review author[s]: David Starr Jordan


Scientific Apparatus and Laboratory Methods
Oil-Water Models Illustrating Surface Forces and Films in Biological Phenomena, pp. 572-575
V. E. Hall; F. De Eds; P. J. Hanzlik
A New Type of Electron Spectrograph, p. 575
Kenneth Cole


Special Articles
Illinium, pp. 575-576
J. A. Harris; L. F. Yntema; B. S. Hopkins
The Effect of an Electric Field Applied to a Photographic Plate during Exposure, pp. 576-578
Arthur E. Ruark; Ferdinand G. Brickwedde


The American Society of Mammalogists, p. 578
A. Brazier Howell

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1639, May 28, 1926
Next Issue: New Series, Vol. 63, No. 1641, Jun. 11, 1926



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Science, New Series, Vol. 63, No. 1641, Jun. 11, 1926


Previous Issue: New Series, Vol. 63, No. 1640, Jun. 4, 1926
Next Issue: New Series, Vol. 63, No. 1642, Jun. 18, 1926


Front Matter (4 pp.)
Experimental Science and World Geometry, pp. 579-586
A. C. Lunn

Mysterious Acoustic Phenomena in Yellowstone National Park, pp. 586-587
Hugh M. Smith

Sir John Burchmore Harrison, pp. 587-589
C. A. Browne


Scientific Events
Cooperation between the United States and Great Britain in Mine Safety Research, pp. 589-590
The Endowment Committee of the Engineering Foundation and Engineering Societies Library, p. 590
Alfred D. Flinn
National Research Fellowships in the Biological Sciences, pp. 590-591
Frank R. Lillie
The Golden Jubilee of the American Chemical Society, p. 591


Scientific Notes and News, pp. 591-594
University and Educational Notes, pp. 594-595


Discussion
Human Tails, pp. 595-596
W. W. Keen
Citations of Scientific Literature, p. 596
F. A. McDermott; Alfred Rehder
Introduction of Lemmings on St. Paul Island, Alaska, pp. 596-597
Henry O'Malley
Apropos the "White Indians" of Darien, p. 597
Maynard M. Metcalf


Scientific Books
----------------, pp. 597-599
Helmholtz's Treatise on Physiological Optics
James P. C. Southall
Review author[s]: Leonard T. Troland


Scientific Apparatus and Laboratory Methods
Surface Tension Measurement by the Ring Method, pp. 599-600
Paul E. Klopsteg


Special Articles
The Effect of Adrenalin on the Luminescence of Fireflies, pp. 600-601
Wm. S. Creighton


The Ohio Academy of Science, pp. 601-602
William H. Alexander

The Utah Academy of Sciences, p. 602
C. Arthur Smith

The North Carolina Academy of Science, p. 602
Bert Cunningham

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1640, Jun. 4, 1926
Next Issue: New Series, Vol. 63, No. 1642, Jun. 18, 1926



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Science, New Series, Vol. 63, No. 1642, Jun. 18, 1926


Previous Issue: New Series, Vol. 63, No. 1641, Jun. 11, 1926
Next Issue: New Series, Vol. 63, No. 1643, Jun. 25, 1926


Front Matter (4 pp.)
The Choice of a Profession--Medical, pp. 603-607
Elliott C. Cutler

An Objective Demonstration of the Shape of Cells in Masses, pp. 607-609
Frederic T. Lewis

William Otis Crosby, pp. 609-610
Douglas Johnson


Scientific Events
The National Physical Laboratory of Great Britain, pp. 610-611
New Foreign Members of the Royal Society, pp. 611-612
The World Forestry Congress, p. 612
Activities of the Rockefeller Foundation, p. 613


Scientific Notes and News, pp. 613-615
University and Educational Notes, pp. 615-616


Discussion
An Outdoor Optical Experiment, p. 616
Henry Norris Russell
Seismic Wave Velocity and Densities of Crustal Materials, pp. 616-617
Jerry H. Service
Field Trips in Geology, p. 617
W. C. Morse
Special Characters for the Typewriter, pp. 617-618
Jno. D. Riggs
Radio Information, p. 618
L. S. Mayer


Scientific Books
----------------, pp. 618-619
The Technique of Tissue Culture "In Vitro"
T. S. P. Strangeways
Tissue Culture in Relation to Growth and Differentiation
T. S. P. Strangeways
Review author[s]: George A. Baitsell


Scientific Apparatus and Laboratory Methods
A Cathode Ray Oscillograph for Several Simultaneous Waves with Stabilized Linear Time Axis, p. 619
Frederick Bedell; Herbert J. Reich


Special Articles
The Isolation of a Crystalline Protein with Tuberculin Activity, pp. 619-620
Florence B. Seibert
Preliminary Notes on the Structure of Plant Protoplasm, pp. 620-621
Robert H. Bowen
The Use of Subscript and Superscript Exponents in Mathematics and in Chemistry, pp. 621-622
Elliot Q. Adams


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1641, Jun. 11, 1926
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Science, New Series, Vol. 63, No. 1643, Jun. 25, 1926


Previous Issue: New Series, Vol. 63, No. 1642, Jun. 18, 1926
Next Issue: New Series, Vol. 64, No. 1644, Jul. 2, 1926


Front Matter (4 pp.)
Operative versus Abstract Philosophy in Physics, pp. 623-625
Wm. S. Franklin

Julius Robert Mayer and the Blood's Circulation Rate, pp. 626-629
Edward F. Adolph

John J. Flather, pp. 629-630
O. M. Leland


Scientific Events
The Commonwealth Institute of Science and Industry, p. 630
Federal Legislation, pp. 630-631
The Control of Cancer in Massachusetts and New York, p. 631
Presentation in Honor of Dr. B. F. Kingsbury, pp. 631-632
S. H. G.
The Grabau Medal, p. 632
W. D. M.


Scientific Notes and News, pp. 632-635
University and Educational Notes, p. 635


Discussion
A Program for Biologists, pp. 635-636
T. D. A. Cockerell
The De Revolutionibus Orbium Coelestium, pp. 636-637
Drew Bond
A Plant New to the United States, p. 637
Frank C. Pellett
Milling and Baking Qualities of Old Wheat, p. 637
C. O. Swanson


Scientific Books
----------------, pp. 637-640
Chemistry in Industry
H. E. Howe
Chemistry in Agriculture
S. Chamberlain; C. A. Browne
Review author[s]: H. W. Wiley


Scientific Apparatus and Laboratory Methods
The Use of Arcs and Other Fluctuating Sources in Photo-Electric Photometry, pp. 640-641
B. Kurrelmeyer


Special Articles
Quartet and Doublet Terms in the Copper Spectrum, pp. 641-642
A. G. Shenstone
Blood Studies in General Anesthesia, p. 642
H. J. Stander; A. H. Radelet


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1642, Jun. 18, 1926
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Science, New Series, Vol. 64, No. 1644, Jul. 2, 1926


Previous Issue: New Series, Vol. 63, No. 1643, Jun. 25, 1926
Next Issue: New Series, Vol. 64, No. 1645, Jul. 9, 1926


Volume Information (8 pp.)
Front Matter (6 pp.)
The Ionization of Gases as a Type of Chemical Activation, pp. 1-6
S. C. Lind

Sigma Xi in Research, pp. 6-8
Bird T. Baldwin

Ezra Townsend Cresson, pp. 8-9
Philip P. Calvert


Scientific Events
The Scientific Jubilee of Charles Richet, p. 9
Robert F. Le Guyon; Raoul M. May
Field Excursion of Ohio Geologists, p. 10
Legislation against the Teaching of Evolution in Louisiana, p. 10
The Golden Jubilee of the American Chemical Society, pp. 10-11
The Fifth Philadelphia Meeting of the American Association and Associated Societies, p. 11
Burton E. Livingston


Scientific Notes and News, pp. 11-15
University and Educational Notes, pp. 15-16


Discussion
The Term Psychozoic, p. 16
E. W. Berry
The West Fork of the Gila River, pp. 16-17
Fred Winn
Size Inheritance, p. 17
R. J. Garber
Fundamentalism in North Carolina, pp. 17-18
B. W. Wells


Quotation
Leaders in Medicine, p. 18


Scientific Books
----------------, pp. 18-20
Life and Evolution; an Introduction to General Biology
S. J. Holmes
Review author[s]: W. E. Castle


Scientific Apparatus and Laboratory Methods
The Measurement of Surface Tension by means of a Chainomatic Balance, p. 20
L. W. Durrell; Fred G. Person; Charles F. Rogers


Special Articles
On the Elimination of Heat from Normal and Pathologic Subjects as Determined from Calorimetric Studies of the Extremities, pp. 21-22
Charles Sheard
Chromosome VIII in Maize, p. 22
William H. Eyster


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 63, No. 1643, Jun. 25, 1926
Next Issue: New Series, Vol. 64, No. 1645, Jul. 9, 1926



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Science, New Series, Vol. 64, No. 1645, Jul. 9, 1926


Previous Issue: New Series, Vol. 64, No. 1644, Jul. 2, 1926
Next Issue: New Series, Vol. 64, No. 1646, Jul. 16, 1926


Front Matter (6 pp.)
William Chauvenet, pp. 23-28
Wm. H. Roever

The Transmission of Human Protozoa, pp. 28-34
R. W. Hegner


Scientific Events
The Expedition of the California Academy to the Revillagigedo Islands, p. 34
Hawaiian Academy of Science, pp. 34-35
E. H. Bryan
Conference of Scientific Men at the Works of the General Electric Company, p. 35
Testimonial Dinner to Carl Barus, pp. 35-36
Appointments at the Rockefeller Institute for Medical Research, p. 36
The International Research Council, pp. 36-37
Vernon Kellogg


Scientific Notes and News, pp. 37-39
University and Educational Notes, pp. 39-40


Discussion
Amoeboid Movement, p. 40
C. F. A. Pantin
Do Ciliated Organisms Rotate Counter-Clockwise While Swimming?, p. 40
A. A. Schaeffer
An Interchangeable Typewriter, p. 41
Frank C. Panuska
A Denominational College and Evolution, pp. 41-42


Scientific Books
----------------, pp. 42-44
The Biology of Population Growth
Raymond Pearl
Review author[s]: Edgar Sydenstricker


Scientific Apparatus and Laboratory Methods
An Automatic Thermoregulator, Depending on the Flow of Warmed Liquid, p. 44
W. F. Von Oettingen


Special Articles
New Terms in the Spectra of Zinc and Mercury, pp. 44-46
Ralph A. Sawyer; Norman C. Beese


The Michigan Academy of Sciences, Arts and Letters, p. 46
L. R. Dice

The Mid-Western Association of Experimental Psychologists, p. 46
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1644, Jul. 2, 1926
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Science, New Series, Vol. 64, No. 1646, Jul. 16, 1926


Previous Issue: New Series, Vol. 64, No. 1645, Jul. 9, 1926
Next Issue: New Series, Vol. 64, No. 1647, Jul. 23, 1926


Front Matter (6 pp.)
Empiricism and Rationalism, pp. 47-57
Edwin B. Wilson

Sidney Irving Smith, pp. 57-58
A. E. Verrill


Scientific Events
The Conversazione of the Royal Society, pp. 58-59
The Russian Mining Congress, p. 59
Ophthalmological Laboratory for Harvard University, pp. 59-60
Research by Foreign Scholars at Yale University, p. 60
Biological Abstracts, pp. 60-61
The Fourth American Association Prize, p. 61
Burton E. Livingston


Scientific Notes and News, pp. 61-64
University and Educational Notes, p. 64


Discussion
The Structure and Formation of Bast Fibers in Flax, pp. 64-65
Donald B. Anderson
Should New Fossil Species Be Described from Wells?, pp. 65-66
Hubert G. Schenck
The Price of Honor, p. 66
Maynard Shipley


Quotations
Chemistry and Disease, p. 66


Scientific Books
----------------, pp. 66-68
A History of British Earthquakes
Charles Davison
Review author[s]: Bailey Willis


Scientific Apparatus and Laboratory Methods
Methods for the Determination of Replaceable Bases in Soils, pp. 69-70
P. S. Burgess; J. F. Breazeale


Special Articles
Analysis of the Color of the Skin and Its Significance, pp. 70-72
Charles Sheard
Ciliary Activity of the Oyster, p. 72
Thurlow C. Nelson


Science News, pp. viii+x+xii

Previous Issue: New Series, Vol. 64, No. 1645, Jul. 9, 1926
Next Issue: New Series, Vol. 64, No. 1647, Jul. 23, 1926



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Science, New Series, Vol. 64, No. 1647, Jul. 23, 1926


Previous Issue: New Series, Vol. 64, No. 1646, Jul. 16, 1926
Next Issue: New Series, Vol. 64, No. 1648, Jul. 30, 1926


Front Matter (6 pp.)


The Institute of Chemistry: Address of the Retiring President
The Address of the Retiring President, pp. 73-74
M. L. Crossley
The Training of Men for the Profession of Chemistry, pp. 74-77
Treat B. Johnson
Science for Humanity's Sake, pp. 77-80
William Blum


John Howland--1873-1926, pp. 80-83
E. A. P.


Scientific Events
The Australasian Association, pp. 83-84
Field Work of the Victoria Memorial Museum--1926, pp. 84-85
W. H. Collins
World Longitude Determination, pp. 85-86
A School of Microscopy, p. 86
Programs in Engineering and Social Science at the Philadelphia Meeting of the American Association, pp. 86-87
Burton E. Livingston


Scientific Notes and News, pp. 87-88
University and Educational Notes, p. 89


Discussion
The Reversal of the Hydrogen Series in the Extreme Ultra-Violet, pp. 89-90
Theodore Lyman
The Cleaving of Ciliates by Amoeba, p. 90
C. Dale Beers
Danger to the Crater Lake National Park, p. 91
Willard G. Van Name
A New (Ninth) Edition of Lee's "the Microtomist's Vademecum", p. 91
E. V. Cowdry


Quotations
The Paris Bureau of Scientific Information, pp. 91-92


Scientific Books
----------------, p. 92
The Music of the Spheres, a Nature Lover's Astronomy
Florence Grondal
Review author[s]: Frank Schlesinger
----------------, p. 93
Die Binnengewässer Mitteleuropas
August Thienemann
Review author[s]: C. Juday


Scientific Apparatus and Laboratory Methods
The Ring Method for Surface Tension Measurement, pp. 93-94
J. M. Johlin


Special Articles
Buttermilk as a Fertilizer for Blueberries, pp. 94-96
Frederick V. Coville


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 64, No. 1648, Jul. 30, 1926


Previous Issue: New Series, Vol. 64, No. 1647, Jul. 23, 1926
Next Issue: New Series, Vol. 64, No. 1649, Aug. 6, 1926


Front Matter (6 pp.)
Biology and Experimentation, pp. 97-105
H. S. Jennings


The American Association for the Advancement of Science
The Mills College Meeting of the Pacific Division, pp. 105-112
W. W. Sargeant


The International Congress of Plant Sciences, pp. 112-113
Lester W. Sharp


Scientific Events
Helium in the Natural Gases of Japan, pp. 113-114
Research Fellows in Mining and Metallurgy of the Carnegie Institute of Technology, p. 114
Mental Hygiene at Yale University, pp. 114-115
The Rockefeller Foundation and the League of Nations, p. 115


Scientific Notes and News, pp. 115-118
University and Educational Notes, pp. 118-119


Discussion
Geologic Age Calculations, p. 119
Alfred C. Lane
Aerial Music in Yellowstone Park, pp. 119-120
Stephen A. Forbes
Variations in Colors of Flowers, p. 120
Jens Jensen
Zygophyllum Fabago in the United States, p. 120
Stewart H. Burnham


Scientific Books
----------------, pp. 120-121
Bacterial Infection with Special Reference to Dental Practice
J. L. Appleton
Review author[s]: Ivan C. Hall


Special Articles
A Preliminary Note on the Etiology of Verruga Peruviana, pp. 121-122
Hideyo Noguchi; Oswaldo Hercelles
On the Extension of the Debye-Hückel Theory of Strong Electrolytes to Concentrated Solutions, p. 122
T. H. Gronwall; Victor K. LaMer


Science News, pp. viii+x+xii

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Science, New Series, Vol. 64, No. 1649, Aug. 6, 1926


Previous Issue: New Series, Vol. 64, No. 1648, Jul. 30, 1926
Next Issue: New Series, Vol. 64, No. 1650, Aug. 13, 1926


Front Matter (6 pp.)
The Modern Hospital and Medical Progress, pp. 123-130
Rufus Cole

The Subsidence near Sharon Springs, Kansas, pp. 130-131
Raymond C. Moore


Scientific Events
The Solidification of Helium, pp. 131-132
Radiation from the Carbon Arc, p. 132
The Committee on Intellectual Cooperation of the League of Nations, pp. 132-133
The Golden Jubilee of the American Chemical Society, pp. 133-134


Scientific Notes and News, pp. 134-136
University and Educational Notes, p. 137


Discussion
Logarithms and Precision, pp. 137-138
F. H. Safford
The Names Simia, S. Satyrus and Pithecus, p. 138
C. W. Stiles
Sand Flotation on Lakes, p. 138
C. Juday


Scientific Books
----------------, pp. 138-140
An Introduction to Cytology
Lester W. Sharp
Review author[s]: Charles E. Allen


Scientific Apparatus and Laboratory Methods
Improvements in Alpha-Ray Track Apparatus, pp. 140-141
Charles T. Knipp


Special Articles
Further Studies on Adrenal Insufficiency in Dogs, pp. 141-142
J. M. Rogoff; G. N. Stewart
A Principle of Correspondence, p. 142
Ernest O. Lawrence


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 64, No. 1650, Aug. 13, 1926


Previous Issue: New Series, Vol. 64, No. 1649, Aug. 6, 1926
Next Issue: New Series, Vol. 64, No. 1651, Aug. 20, 1926


Front Matter (6 pp.)


British Association for the Advancement of Science
The Presidential Address, pp. 143-150


George D. Shepardson, p. 150
O. M. Leland

George E. Beyer; 1861-1926, p. 151
Percy Viosca


Scientific Events
Expeditions of the Field Columbian Museum, pp. 151-152
The Beit Fellowships, pp. 152-153
The Daniel Guggenheim Fund for the Promotion of Aeronautics, p. 153
Meeting of Plant Physiologists, pp. 153-154
The International Conference on Flower and Fruit Sterility, p. 154


Scientific Notes and News, pp. 154-157
University and Educational Notes, pp. 157-158


Discussion
The English Translation of De Revolutionibus Orbium Coelestium, pp. 158-159
Frederick E. Brasch
Fluorides Versus Fluosilicates as Insecticides, p. 159
S. Marcovitch
Comments on "Vacuoles", p. 159
Albert Schneider


Scientific Books
----------------, pp. 160-161
Genetic Studies of Genius
Louis M. Terman
Review author[s]: Walter F. Dearborn


Scientific Apparatus and Laboratory Methods
On the Retention of a Ball by a Vertical Water Jet, pp. 161-163
Will C. Baker


Special Articles
The Basis of Reflex Coordination, pp. 163-165
Alexander Forbes


The American Association for the Advancement of Science
The Mills College Meeting of the Pacific Division, p. 166


Science News, pp. x+xii+xiv

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Science, New Series, Vol. 64, No. 1651, Aug. 20, 1926


Previous Issue: New Series, Vol. 64, No. 1650, Aug. 13, 1926
Next Issue: New Series, Vol. 64, No. 1652, Aug. 27, 1926


Front Matter (6 pp.)
Science and Civilization, pp. 167-173
W. F. Durand

Bacteria and the Origin of Species, pp. 173-175
Ivan E. Wallin


Scientific Events
The First Six Months of the International Institute of Intellectual Cooperation, p. 175
English Vital Statistics, pp. 175-176
Geographic Names, p. 176
Visit of the American Chemical Society to Priestley's Grave, pp. 176-177


Scientific Notes and News, pp. 177-179
University and Educational Notes, pp. 179-180


Discussion
The Most Probable Value of Certain Basic Constants, pp. 180-182
Raymond T. Birge; N. Ernest Dorsey
The Need of an Enlarged List of Botanical Nomina Conservanda, pp. 182-183
Alfred Gundersen
New York City an Aseismic Area, p. 183
R. H. Finch


Scientific Books
----------------, pp. 183-186
Aristotle
W. D. Ross
Aristoteles: Grundlegung einer Geschichte seiner Entwicklung
Werner Jaeger
Review author[s]: Jonathan Wright


Scientific Apparatus and Laboratory Methods
Factors that Influence Life and Germination of Cotton Seed, pp. 186-187
G. F. Lipscomb; T. I. Dowling
Collecting Amphioxus, pp. 187-188
Morris Miller Wells


Special Articles
Chondriosomes and Golgi Apparatus in Plant Cells, pp. 188-190
Robert H. Bowen
The Effect of Helium on the Intensity of the Mercury Spectrum, p. 190
William G. Nash


Science News, pp. x+xii+xiv

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Next Issue: New Series, Vol. 64, No. 1652, Aug. 27, 1926



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Science, New Series, Vol. 64, No. 1652, Aug. 27, 1926


Previous Issue: New Series, Vol. 64, No. 1651, Aug. 20, 1926
Next Issue: New Series, Vol. 64, No. 1653, Sep. 3, 1926


Front Matter (6 pp.)


The American Association for the Advancement of Science
The Solar System--Some Unsolved Problems, pp. 191-198
Robert G. Aitken


Scientific Events
Recent Researches at the National Physical Laboratory of Great Britain, pp. 198-199
Indian Mounds in Louisiana, p. 199
Museum of the Peaceful Arts, pp. 199-200
The Pan-Pacific Botanic Garden, p. 200
The Retirement of University Professors in Germany, pp. 200-201


Scientific Notes and News, pp. 201-204
University and Educational Notes, p. 204


Discussion
Was Paul Guldin a Plagiarist?, pp. 204-206
G. A. Miller; David Eugene Smith
Crystalline Tetramethyl Mannose, p. 206
W. Lee Lewis; Richard D. Greene
Zoological Nomenclature, p. 206
C. W. Stiles
Robert Simpson Woodward, p. 207
K. W. Woodward


Quotations
Two Astronomical Authorities on the Waning of Pure Science Research in the United States, p. 207


Scientific Books
----------------, pp. 207-208
The Biology of the Protozoa
Gary N. Calkins
Review author[s]: H. S. Jennings
----------------, pp. 208-209
The Elements of Physics and Chemistry
Vernon Bosman
Review author[s]: W. A. Noyes


Scientific Apparatus and Laboratory Methods
Optimum Conditions for Music in Rooms, pp. 209-210
F. R. Watson


Special Articles
The Attenuation of Plant Viruses and the Inactivating Influence of Oxygen, p. 210
James Johnson


The Nebraska Academy of Science, p. 210
M. P. Brunig

Science News, pp. x+xii+xiv

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Science, New Series, Vol. 64, No. 1653, Sep. 3, 1926


Previous Issue: New Series, Vol. 64, No. 1652, Aug. 27, 1926
Next Issue: New Series, Vol. 64, No. 1654, Sep. 10, 1926


Front Matter (6 pp.)


The British Association for the Advancement of Science
The Scope of Organic Chemistry, pp. 211-216
J. F. Thorpe


Age: The Piper, pp. 216-218
T. Wingate Todd


Scientific Events
The Laennec Anniversary, pp. 218-219
The Shedd Aquarium, p. 219
Mathematics at Princeton University, pp. 219-220
The Golden Jubilee of the American Chemical Society, p. 220


Scientific Notes and News, pp. 221-223
University and Educational Notes, p. 224


Discussion
The Calorimetric Method of Determining Blood Flow in the Extremities, pp. 224-225
G. N. Stewart
The Shape of Cells in Masses, pp. 225-226
John Millis
The Big Stone Gap Shale of Southwestern Virginia, p. 226
J. H. Swartz
A Stock for the Mangosteen, pp. 226-227
P. J. Wester


Quotations
The Oxford Meeting, p. 227


Scientific Books
Concerning Reptiles and Frogs, pp. 227-228
Reptiles and Amphibians: Their Habits and Adaptations
Thomas Barbour
Bering's Voyages, p. 228
Bering's Voyages
Frank A. Golder
Review author[s]: David Starr Jordan
Sherborn's "Index Animalium", p. 228
Review author[s]: Bashford Dean


Special Articles
Losses in Trout Fry after Distribution, pp. 228-229
A. P. Knight
Sex Differences in Mortality and Metabolic Activity in Daphnia Magna, pp. 229-230
John W. MacArthur; W. H. T. Baillie


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1652, Aug. 27, 1926
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Science, New Series, Vol. 64, No. 1654, Sep. 10, 1926


Previous Issue: New Series, Vol. 64, No. 1653, Sep. 3, 1926
Next Issue: New Series, Vol. 64, No. 1655, Sep. 17, 1926


Front Matter (6 pp.)
The Needs and Opportunities in Parasitology, pp. 231-236
Henry B. Ward


The British Association for the Advancement of Science
The Scope of Inorganic Chemistry. II, pp. 236-241
J. F. Thorpe


Scientific Events
The International Geological Congress at Madrid, pp. 241-242
The Section of Volcanology of the U. S. Geological Survey, pp. 242-243
T. A. J.
The Institute of Child Guidance, pp. 243-244
The Julius Rosenwald Industrial Museum, p. 244
Chemistry at Rochester, p. 244


Scientific Notes and News, pp. 245-247
University and Educational Notes, pp. 247-248


Discussion
What Constitutes Publication? a Question concerning Nomenclature, pp. 248-249
H. A. Pilsbry
Bowmanville Low-Water Stage of Glacial Lake Chicago, p. 249
Frank Collins Baker
Inheritance of Accessory Mammae, p. 249
Carl Hartman


Scientific Books
----------------, pp. 249-251
Plants and Man, a Series of Essays relating to the Botany of Ordinary Life
F. O. Bower
Review author[s]: Alfred H. Povah


The Stanford Research Index Card, pp. 251-252
W. R. Miles


Scientific Apparatus and Laboratory Methods
Absolute Measurement of Average Size of Droplets of the Disperse Phase of an Emulsion, pp. 252-253
Wheeler P. Davey
A Surface Tensiometer and an Osmometer for Class Work, pp. 253-254
F. E. Lloyd; G. W. Scarth
A Simple Synthetic Medium for the Cultivation of Bacteria, p. 254
A. F. Dolloff


Special Articles
The Motion of a Spinning Top before It Reaches the Ground, pp. 254-256
Arthur Taber Jones
A Vitamin B Deficiency Manifesting Itself for the First Time in the Second Generation, pp. 256-257
Ira A. Manville
Rate of Growth of Young Lobsters, p. 257
D. A. MacKay


The International Congress of Plant Sciences, pp. 258-260
Frank Thone

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1653, Sep. 3, 1926
Next Issue: New Series, Vol. 64, No. 1655, Sep. 17, 1926



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Science, New Series, Vol. 64, No. 1655, Sep. 17, 1926


Previous Issue: New Series, Vol. 64, No. 1654, Sep. 10, 1926
Next Issue: New Series, Vol. 64, No. 1656, Sep. 24, 1926


Front Matter (6 pp.)
James Hutton, the Pioneer of Modern Geology, pp. 261-265
Wm. H. Hobbs

Cooperative Research--The Plan of the National Tuberculosis Association, pp. 265-269
William Charles White

The Third Pan-Pacific Science Congress, pp. 269-272


Scientific Events
Research in Colleges, pp. 272-273
Committees of the American Institute of Electrical Engineers, p. 273
The American Electrochemical Society, p. 273
The International Congress of Philosophy, p. 274


Scientific Notes and News, pp. 274-277
University and Educational Notes, p. 277


Discussion
Radiating Potentials of the Band Systems of Carbon Monoxide, pp. 277-278
O. S. Duffendack; Gerald W. Fox
The Relation of Nitrates to Tobacco Frenching, pp. 278-279
W. D. Valleau; E. M. Johnson
A Widespread Error Relating to Logarithms, p. 279
G. A. Miller
Literature Citations, pp. 279-280
Foster Dee Snell


Scientific Books
----------------, p. 280
An Introduction to Economic Geography. Volume I. Natural Environment as Related to Economic Life
Wellington Jones; Derwent S. Whittlesey
Review author[s]: John E. Orchard


Special Articles
A New Ultra-Violet Transmitting Glass, pp. 281-282
H. P. Hood
Nitrate Utilization by Asparagus in the Absence of Light, p. 282
G. T. Nightingale; L. G. Schermerhorn


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1654, Sep. 10, 1926
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Science, New Series, Vol. 64, No. 1656, Sep. 24, 1926


Previous Issue: New Series, Vol. 64, No. 1655, Sep. 17, 1926
Next Issue: New Series, Vol. 64, No. 1657, Oct. 1, 1926


Front Matter (6 pp.)


The British Association for the Advancement of Science
Biology and the Training of the Citizen, pp. 283-290
J. Graham Kerr


An International Committee on Botanical Nomenclature, pp. 290-291
A. S. Hitchcock

The League of Nations Committee and Institute of International Intellectual Cooperation, pp. 291-292
Vernon Kellogg


Scientific Events
The British Institution of Fuel Technology, p. 292
A Pan-Pacific Exposition, pp. 292-293
The Lowell Lectures, p. 293
The Symposium on Cancer Control, pp. 293-294


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


Discussion
Hooke's Law, pp. 298-299
Joseph O. Thompson
The Quantitative Theory of Sex, pp. 299-300
Richard Goldschmidt
A New Species of Monilia Pathogenic for Man, p. 300
Frederick W. Shaw
Robert Mayer, p. 301
Walter Landauer


Quotations
The Future of America, pp. 301-302


Scientific Books
----------------, pp. 302-303
A Pioneer in Public Health--William Thompson Sedgwick
Review author[s]: Haven Emerson


Scientific Apparatus and Laboratory Methods
A Focussing X-Ray Spectrograph for Low Temperatures, p. 303
Karl Horovitz
The Measurement of Surface Tension with the Balance, p. 304
Agnes Pockels
The Determination of Viable Lactobacillus acidophilus, pp. 304-306
Walter L. Kulp


Special Articles
Theories of a New Solid Junction Rectifier, pp. 306-308
L. O. Grondahl
Experimental Modification of Polarity in Marine Ova, pp. 308-309
C. V. Taylor; D. M. Whitaker


The Anniversary Meeting of the American Chemical Society, pp. 309-310
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1655, Sep. 17, 1926
Next Issue: New Series, Vol. 64, No. 1657, Oct. 1, 1926



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Science, New Series, Vol. 64, No. 1657, Oct. 1, 1926


Previous Issue: New Series, Vol. 64, No. 1656, Sep. 24, 1926
Next Issue: New Series, Vol. 64, No. 1658, Oct. 8, 1926


Front Matter (12 pp.)


The Golden Jubilee of the American Chemical Society
A Look Ahead, pp. 311-317
James F. Norris
Joseph Priestley, pp. 317-319
Edgar F. Smith


James Alexander Lyman, pp. 319-320
Edward P. Bartlett


Scientific Events
The Present State of Scientific Knowledge of Cancer, pp. 320-321
The First International Congress of Soil Science, pp. 321-322
J. G. Lipman; D. J. Hissink
Parasites in Central American Tropics, p. 322
The Porto Rican School of Tropical Medicine, pp. 322-323
The Eric Knight Jordan Fellowships in Geology, p. 323
James Perrin Smith; Robert Van Vleck Anderson; Leo George Hertlein


Scientific Notes and News, pp. 323-326
University and Educational Notes, p. 326


Discussion
The Discovery of the Insecticidal Property of Carbon Disulphide, pp. 326-327
Perez Simmons; George W. Ellington
A New Longevity Record, pp. 327-328
Frederick S. Hammett
The Venom of New Born Pit Vipers, p. 328
Percy Viosca
Symbols for Mutations in Mice, p. 328
Wm. H. Gates
Education in Manitoba, pp. 328-329
J. W. Shipley


Quotations
War on Disease, pp. 329-330


Resolutions concerning Geophysics, pp. 330-331


Scientific Apparatus and Laboratory Methods
A Preserving Fluid for Green Plants, pp. 331-332
Anselm Maynard Keefe
A Binocular Magnifier for the Determination of Opaque Minerals, pp. 332-333
Ray C. Treasher
The Use of Plasticine Models in Teaching Mitosis, p. 333
Caroline A. Black


Special Articles
The Ring Method for the Determination of Surface Tension, pp. 333-336
William D. Harkins; T. F. Young; Lan Hua Cheng
The Chromosomes of Rodents, p. 336
Theophilus S. Painter


Science News, pp. x+xii+xiv
Back Matter (8 pp.)

Previous Issue: New Series, Vol. 64, No. 1656, Sep. 24, 1926
Next Issue: New Series, Vol. 64, No. 1658, Oct. 8, 1926



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Science, New Series, Vol. 64, No. 1658, Oct. 8, 1926


Previous Issue: New Series, Vol. 64, No. 1657, Oct. 1, 1926
Next Issue: New Series, Vol. 64, No. 1659, Oct. 15, 1926


Front Matter (6 pp.)
The Problem of the Origin of Species as It Appeared to Darwin in 1859 and as It Appears to Us To-Day, pp. 337-341
Henry Fairfield Osborn

The Journal ``Science'' and the American Association for the Advancement of Science, pp. 342-347
J. McKeen Cattell

The Relation between the Cost of Research and the Cost of Publication, pp. 347-348
William Albert Noyes

The First Greenland Expedition of the University of Michigan, pp. 348-349
Wm. H. Hobbs


Scientific Events
Statistics of the Physicians of Germany in 1926, pp. 349-350
The Royal Photographic Society's Exhibition, p. 350
The Conference on Bituminous Coal, p. 351
The Mohonk Cancer Symposium, pp. 351-352
The Tenth International Congress of Zoology, p. 352
G. Horváth


Scientific Notes and News, pp. 352-355
University and Educational Notes, p. 355


Discussion
The Teaching of Evolution in Arkansas, p. 356
C. Bush
The Concilium Bibliographicum, pp. 356-357
G. E. Gates
The Discovery of Vitamines, pp. 357-358
E. C. Van Leersum
A Logic Poem, p. 358
Christine Ladd-Franklin


Quotations
A Berthelot Memorial, pp. 358-359


Scientific Books
----------------, pp. 359-361
The Physiology of Plants: The Principles of Food Production
George James Peirce
Review author[s]: Burton E. Livingston


Scientific Apparatus and Laboratory Methods
A Simple Method of Using Safety Razor Blades for Microtome Sections, pp. 361-362
Robert A. Nesbit
Estimation of the Colloidal Material in Soils, p. 362
George John Bouyoucos
Permanent Cultures, p. 362
Frederick Bauer


Special Articles
The Filterable Cell of the Rous Chicken Sarcoma and the Question of the Causative Agent, pp. 362-363
Waro Nakahara
Glass as a Fourth State of Matter, pp. 363-364
George S. Parks; Hugh M. Huffman


The Division of Chemical Education of the American Chemical Society, p. 364
B. S. Hopkins

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1657, Oct. 1, 1926
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Science, New Series, Vol. 64, No. 1659, Oct. 15, 1926


Previous Issue: New Series, Vol. 64, No. 1658, Oct. 8, 1926
Next Issue: New Series, Vol. 64, No. 1660, Oct. 22, 1926


Front Matter (6 pp.)
Our World in the Making, pp. 365-371
Herman L. Fairchild

On the Significance of Science, pp. 371-372
Nathan Yoderblom


Scientific Events
Wireless Research in England, pp. 372-373
Expedition to Central America for Medical Research, p. 373
Selection of a Chemist for the United States Bureau of Chemistry, pp. 373-374
The Fiftieth Anniversary of the Johns Hopkins University, pp. 374-375
The International Tuberculosis Congress, p. 375


Scientific Notes and News, pp. 375-378
University and Educational Notes, pp. 378-379


Discussion
The Metric Movement, pp. 379-380
Alexander McAdie
Institutional Sources of Industrial Research Men, pp. 380-381
W. A. Hamor
Zoological Nomenclature, p. 381
C. W. Stiles
The Endowment of an Individual, pp. 381-382
The A. Cressy Morrison Prize, p. 382
Roy Waldo Miner


Scientific Books
----------------, pp. 382-383
The Families of Flowering Plants, I. Dicotyledons, Arranged according to a New System Based on Their Probable Phylogeny
J. Hutchison
Review author[s]: Edward W. Berry


Scientific Apparatus and Laboratory Methods
The Cultivation of Opalina, pp. 383-384
A. Ranger Tyler
A Simple Method of Obtaining Single-Spore Cultures, p. 384
H. N. Hansen


Special Articles
Diet and Body Fat, pp. 384-386
Lafayette B. Mendel; William E. Anderson


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1658, Oct. 8, 1926
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Science, New Series, Vol. 64, No. 1660, Oct. 22, 1926


Previous Issue: New Series, Vol. 64, No. 1659, Oct. 15, 1926
Next Issue: New Series, Vol. 64, No. 1661, Oct. 29, 1926


Front Matter (6 pp.)
Function and Design, pp. 387-394
J. B. Leathes

The Relation of Evolution to Medicine, pp. 394-396
Dudley J. Morton

Field Trips in Geology, pp. 396-397
Douglas Johnson


Scientific Events
The Recently Discovered Gibraltar Skull, pp. 397-398
The Celebration of the Tercentenary of Francis Bacon, pp. 398-399
The Psycho-Clinic for Infancy Research at Yale University, p. 399
The Journal of L. L. Langstroth, pp. 399-400


Scientific Notes and News, pp. 400-403
University and Educational Notes, pp. 403-404


Discussion and Correspondence
The Use of Pith Dust in a Kundt's Tube, p. 404
Rolla V. Cook
Two Introduced Plants of Rare Occurrence in the United States, pp. 404-405
C. S. Pomeroy
Protection of the Tumion in Florida, p. 405
J. C. Th. Uphof
Polemonium Seeds, p. 405
C. H. Ostenfeld


Scientific Books
----------------, pp. 405-406
Elements of Astronomy
E. A. Fath
Review author[s]: Warren K. Green


Scientific Apparatus and Laboratory Methods
The Cultivation of Endamoeba Histolytica, pp. 406-407
Charles F. Craig
A Rapid Method for Preparing Thin Sections of Undecalcified Bone, p. 407
Robert A. Nesbit


Special Articles
Note on Arteriosclerosis in Rabbits Caused by Some Samples of Uranium Nitrate, pp. 407-408
R. Dominguez
The Relation of the Male to the Hatchability of Hens' Eggs, p. 408
F. A. Hays


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1659, Oct. 15, 1926
Next Issue: New Series, Vol. 64, No. 1661, Oct. 29, 1926



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Previous Issue: New Series, Vol. 64, No. 1660, Oct. 22, 1926
Next Issue: New Series, Vol. 64, No. 1662, Nov. 5, 1926


Front Matter (6 pp.)
Ancient and Modern Alchemy, pp. 409-417
Fritz Paneth

A Suggested Course in Plant Physiology, pp. 417-419
H. C. Hampton; S. M. Gordon


Scientific Events
The British National Institute of Poultry Husbandry, pp. 419-420
Mortality in Germany, pp. 420-421
Fall Excursion of the New England Intercollegiate Geologists, p. 421
Wilbur G. Foye
Appointments at Stanford University, p. 421


Scientific Notes and News, pp. 421-425
University and Educational Notes, p. 425


Discussion and Correspondence
An Occidental Buddhist's Conception of Personality, pp. 425-426
Maynard M. Metcalf
Professor Osborn on the Mammals and the Birds of the California Tar Pools, pp. 426-427
Oliver P. Hay
Age of Presbyopic Vision as an Index of the Longevity of Primitive Man, p. 427
M. W. Lyon
The Indication of Quotations, p. 427
S. M. Newhall
The Calorimetric Method of Determining Blood Flow in the Extremities, pp. 427-428
Charles Sheard


Scientific Books
----------------, pp. 428-429
The Growth of Biology. Zoology from Aristotle to Cuvier, Botany from Theophrastus to Hofmeister, Physiology from Harvey to Claude Bernard
William A. Locy
Review author[s]: T. D. A. Cockerell


Scientific Apparatus and Laboratory Methods
Vacuum Tubes for the Storage and Shipment of Bacteria, pp. 429-430
J. Howard Brown


Special Articles
Undeformed Prehistoric Skulls from the Southwest, pp. 430-432
E. B. Renaud
The Losses in Trout Fry after Distribution, p. 432
A. P. Knight


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1660, Oct. 22, 1926
Next Issue: New Series, Vol. 64, No. 1662, Nov. 5, 1926



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Science, New Series, Vol. 64, No. 1662, Nov. 5, 1926


Previous Issue: New Series, Vol. 64, No. 1661, Oct. 29, 1926
Next Issue: New Series, Vol. 64, No. 1663, Nov. 12, 1926


Front Matter (6 pp.)
Emergent Evolution and the Social, pp. 433-440
William Morton Wheeler

The Tonga Expedition of 1926, pp. 440-442
William Albert Setchell


Scientific Events
The American Solar Observatory in Southwest Africa, p. 442
Grants from the Laura Spelman Rockefeller Memorial, pp. 442-443
Program of the Section of Medical Sciences of the American Association, pp. 443-444
A. J. Goldforb
Award of the Willard Gibbs Medal to Professor Abel, p. 444


Scientific Notes and News, pp. 444-448
University and Educational Notes, pp. 448-449


Discussion and Correspondence
Hooke's Law: A Rejoinder, pp. 449-450
Paul E. Klopsteg
A Hermaphroditic Viviparous Oyster of the Atlantic Coast of North America, p. 450
J. S. Gutsell
Scabland Mounds of Eastern Washington, pp. 450-451
O. W. Freeman
Further on Aerial Sounds in Yellowstone Park, pp. 451-452
Stephen A. Forbes


Scientific Apparatus and Laboratory Methods
A Rapid Iron Haematoxylin Technique, pp. 452-453
Elbert C. Cole


Special Articles
The Effect of Pressure on the Magnetization of Magnetite, pp. 453-455
Lars A. Welo
Preliminary Note on the Egg and Larva of the American Eel (Anguilla rostrata), pp. 455-456
Marie Poland Fish
Acidosis, Trembles and Milksickness, pp. 456-457
James Fitton Couch


The World's Forestry Congress, pp. 457-458
Jno. D. Guthrie

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1661, Oct. 29, 1926
Next Issue: New Series, Vol. 64, No. 1663, Nov. 12, 1926



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Science, New Series, Vol. 64, No. 1663, Nov. 12, 1926


Previous Issue: New Series, Vol. 64, No. 1662, Nov. 5, 1926
Next Issue: New Series, Vol. 64, No. 1664, Nov. 19, 1926


Front Matter (6 pp.)
Hygiene as a World Force, pp. 459-466
Andrew Balfour

Arrangements for the Philadelphia Meeting of the American Association, pp. 466-468
Burton E. Livingston

Samuel Boardman Brown, p. 469
Earl R. Scheffel


Scientific Events
The Volcanic Eruption on the Island of Bali, pp. 469-470
Results of the Smithsonian-Chrysler Expedition to Africa, p. 470
The Greenland Expedition of the American Museum of Natural History, pp. 470-471
Grants from the Laura Spelman Rockefeller Memorial, p. 471


Scientific Notes and News, pp. 471-476
University and Educational Notes, p. 476


Discussion and Correspondence
A Priceless Darwin Letter, pp. 476-477
Henry Fairfield Osborn
Mammoth Found in Loess of Washington, p. 477
O. W. Freeman
A Correction, pp. 477-478
E. B. Wilson


Quotations
Dr. Welch's New Chair, p. 478


Scientific Books
----------------, pp. 478-479
General Botany
C. Stuart Gager
Review author[s]: John M. Coulter


Special Articles
The Factor of Age in the Chemical Stability of the Blood during Gestation, pp. 479-480
William De B. MacNider
The Magnetic Moment of Atomic Hydrogen, pp. 480-481
T. E. Phipps; J. B. Taylor


American Association for the Advancement of Science
The Fall Meeting of the Executive Committee, pp. 481-482
Burton E. Livingston


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1662, Nov. 5, 1926
Next Issue: New Series, Vol. 64, No. 1664, Nov. 19, 1926



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Science, New Series, Vol. 64, No. 1664, Nov. 19, 1926


Previous Issue: New Series, Vol. 64, No. 1663, Nov. 12, 1926
Next Issue: New Series, Vol. 64, No. 1665, Nov. 26, 1926


Front Matter (6 pp.)
Research as It is To-Day, pp. 483-487
L. Levy-Bruhl

The Medical School a Professional School of Science, pp. 487-491
C. R. Bardeen

The Annual Science Exhibition of the American Association, pp. 491-493
Burton E. Livingston


Scientific Events
Biological Research in Russia, p. 493
Paul Kammerer's Letter to the Moscow Academy, pp. 493-494
Paul Kammerer
The New Buffalo Museum of Science, p. 494
Plant Congress Photographs, pp. 494-495
H. H. Whetzel
The Dinner to Professor L. R. Jones, p. 495


Scientific Notes and News, pp. 495-498
University and Educational Notes, pp. 498-499


Discussion and Correspondence
Migration of Bonitos or Victor-Fish in the North Pacific, p. 499
David Starr Jordan; A. C. Lovekin
Boveri on Cancer, pp. 499-500
Maynard M. Metcalf
A Peridermium New to the North-Eastern United States, pp. 500-501
Harlan H. York
A New Bibliography of Scientific Journals, p. 501
Charles J. Lyon


Scientific Books
----------------, pp. 501-502
Brains of Rats and Men
C. Judson Herrick
Review author[s]: G. E. Coghill


Scientific Apparatus and Laboratory Methods
A Simple Method for the Devocalization of Dogs, pp. 502-503
Justin M. Andrews


Special Articles
Aluminum Hydroxide and the "Freezing Up" of Alkali Soils during Reclamation, pp. 504-505
W. T. McGeorge; J. F. Breazeale; P. S. Burgess
The Activation of Molecular Hydrogen by Electron Impact, pp. 505-506
George Glockler


The National Academy of Sciences, pp. 506-510
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1663, Nov. 12, 1926
Next Issue: New Series, Vol. 64, No. 1665, Nov. 26, 1926



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Science, New Series, Vol. 64, No. 1665, Nov. 26, 1926


Previous Issue: New Series, Vol. 64, No. 1664, Nov. 19, 1926
Next Issue: New Series, Vol. 64, No. 1666, Special Issue Containing Preliminary Announcements of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, December 27, 1926, to January 1, 1927. Edited by Burton E. Livingston, Permanent Secretary, Dec. 3, 1926


Front Matter (6 pp.)
The Medical Sciences, pp. 511-513
Frederick P. Gay

The Virtue of Medicine as a Profession, pp. 513-516
Edward L. Keyes


The American Association for the Advancement of Science
Enrollment of the Association, p. 517
Life Membership in the Association, pp. 517-519
Burton E. Livingston


Scientific Events
New Methods in the Manufacture of Rubber, p. 519
Plans for the Medical School at the University of Chicago, pp. 519-520
Smithsonian Radio Talks, p. 520
Austin H. Clark
Annual Meeting of the Geological Society of America, pp. 520-521


Scientific Notes and News, pp. 521-524
University and Educational Notes, p. 524


Discussion and Correspondence
Thallium as an Insecticide, p. 525
C. H. Popenoe
"Pink-Root" of Onions Caused by Phoma Sp., p. 525
H. N. Hansen
The Velocity of Gravitation, pp. 525-526
Percy M. Roope
Note on the Scientific Method and Authority, pp. 526-527
Edwin Linton


Scientific Books
----------------, p. 527
Pathologische Pflanzenanatomie in ihren Grundzugen
Ernst Kuster
Review author[s]: Erwin F. Smith
----------------, p. 527
Bones of the Ethmoid Region of the Fish Skull
Edwin Chapin Starks
Review author[s]: David Starr Jordan


Scientific Apparatus and Laboratory Methods
A Convenient Method for Feeding Planarians, pp. 527-528
P. B. Sivickis


Special Articles
Series Relations in the First Long Period, pp. 528-529
R. J. Lang
Study on Sugar Cane Mosaic, pp. 529-530
Augusto Bonazzi
Post-Larval Lobsters, p. 530
D. A. MacKay


The National Academy of Sciences, pp. 530-532
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1664, Nov. 19, 1926
Next Issue: New Series, Vol. 64, No. 1666, Special Issue Containing Preliminary Announcements of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, December 27, 1926, to January 1, 1927. Edited by Burton E. Livingston, Permanent Secretary, Dec. 3, 1926



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Science, New Series, Vol. 64, No. 1666, Special Issue Containing Preliminary Announcements of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, December 27, 1926, to January 1, 1927. Edited by Burton E. Livingston, Permanent Secretary, Dec. 3, 1926


Previous Issue: New Series, Vol. 64, No. 1665, Nov. 26, 1926
Next Issue: New Series, Vol. 64, No. 1667, Dec. 10, 1926


Front Matter (6 pp.)
Preliminary Announcement of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, pp. 533-550
Burton E. Livingston


Scientific Events
Exhibition at the Science Museum at South Kensington, p. 551
Presentation of the Yosemite Museum to the Park Service, p. 551
The Twenty-Fifth Anniversary of the Bureau of Standards, pp. 551-552
Award of Medals by the Royal Society, p. 552


Scientific Notes and News, pp. 552-555
University and Educational Notes, p. 555


Discussion and Correspondence
What is ``Metaphase''?, pp. 555-556
M. A. Chrysler
The Reception of the ``Origin of Species'', p. 556
E. B. Titchener
Plasticine Models, p. 556
Catherine V. Beers
Lost X-Ray Spectrometer, pp. 556-557
Paul E. Klopsteg


Scientific Books
----------------, p. 557
Applied Entomology--An Introductory Text-Book of Insects in Their Relations to Man
H. T. Fernald
Review author[s]: L. O. Howard


Special Articles
The Configurational Relationship of Dextro-Methylethyl Carbinol to Dextro-Lactic Acid, p. 558
P. A. Levene; A. Walti; H. L. Haller
Electrical Activation of the Nereis Egg, pp. 558-560
Ware Cattell


Societies and Academies, p. 560
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1665, Nov. 26, 1926
Next Issue: New Series, Vol. 64, No. 1667, Dec. 10, 1926



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Science, New Series, Vol. 64, No. 1667, Dec. 10, 1926


Previous Issue: New Series, Vol. 64, No. 1666, Special Issue Containing Preliminary Announcements of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, December 27, 1926, to January 1, 1927. Edited by Burton E. Livingston, Permanent Secretary, Dec. 3, 1926
Next Issue: New Series, Vol. 64, No. 1668, Dec. 17, 1926


Front Matter (6 pp.)
The Unity of Life, pp. 561-569
C. E. McClung

The American Association the Annual Prize Awarded by, p. 569
Burton E. Livingston

Curtis Gates Lloyd, pp. 569-570
J. G. Needham


Scientific Events
The International Office of Museums at Geneva, pp. 570-571
The Hooper Foundation and the Research Laboratory of the National Canners Association, p. 571
The American Association Committee on the Agassiz Bust, p. 571
Testimonial to Professor William Henry Holmes, pp. 571-572


Scientific Notes and News, pp. 572-575
University and Educational Notes, p. 575


Discussion and Correspondence
Scientific Names and Their Convenience, pp. 575-576
David Starr Jordan
Biographical Note Relating to J. J. Sylvester, pp. 576-577
G. A. Miller
Capacity and Frequency Measurement by means of the Neon Tube, p. 577
Herbert J. Reich
Our World in the Making, pp. 577-578
Maurice G. Mehl
An Observation at the Time of the Aurora, p. 578
Walter B. Pitkin


Scientific Books
----------------, p. 578
Heteroptera or True Bugs of Eastern North America
W. S. Blatchley
Review author[s]: N. Banks


Scientific Apparatus and Laboratory Methods
The Extraction of Fat from Specimens prior to Clearing by the Potash Method, pp. 578-579
Alden B. Dawson
Maceration of Green Hydra, p. 579
J. R. Mundie


Special Articles
Growth and Transformation of Parasitic Glochidia in Physiological Nutrient Solutions, pp. 579-580
M. M. Ellis; M. D. Ellis
Critical Potential Measurements: A Correction for High-Emission Currents, p. 580
George Glockler


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1666, Special Issue Containing Preliminary Announcements of the Fifth Philadelphia Meeting of the American Association for the Advancement of Science and Associated Societies, December 27, 1926, to January 1, 1927. Edited by Burton E. Livingston, Permanent Secretary, Dec. 3, 1926
Next Issue: New Series, Vol. 64, No. 1668, Dec. 17, 1926



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Science, New Series, Vol. 64, No. 1668, Dec. 17, 1926


Previous Issue: New Series, Vol. 64, No. 1667, Dec. 10, 1926
Next Issue: New Series, Vol. 64, No. 1669, Dec. 24, 1926


Front Matter (6 pp.)
The Functions of a Woman's Clinic, pp. 581-586
J. Whitridge Williams

Tertiary Man in Asia--The Chou Kou Tien Discovery, pp. 586-587
Davidson Black

The Pan-Pacific Research Institution, pp. 587-589


Scientific Events
Standardization of Anatomical Terminology, p. 589
J. S. De Vos Van Steenwyk
Publications of the American Psychological Association, pp. 589-590
H. S. Langfeld
Associated Committees for Wild Life Conservation, p. 590
Reorganization of Chemical and Soils Work in the U. S. Department of Agriculture, pp. 590-591


Scientific Notes and News, pp. 591-595
University and Educational Notes, p. 595


Discussion and Correspondence
Sand Flotation in Nature, pp. 595-596
Frank C. Gates
The Neighbors, p. 596
Frank Schlesinger
Field Trips in Geography, pp. 596-597
A. K. Lobeck
Brevity at Botanical Banquets, pp. 597-598
Neil E. Stevens


Scientific Books
----------------, pp. 598-600
An Introduction to Mathematical Probability
Julian L. Coolidge
Review author[s]: Burton H. Camp


Special Articles
The Opah Or Moonfish, Lampris luna, on the West Coast of Florida, pp. 600-601
E. W. Gudger
Further Suggestions for the Application of the Lipman-Gordon Method of Tree Injection, p. 602
A. Gordon; C. B. Lipman
The Chemical Constitution of Thiasine, p. 602
Eleanor B. Newton; Stanley R. Benedict; H. D. Dakin


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1667, Dec. 10, 1926
Next Issue: New Series, Vol. 64, No. 1669, Dec. 24, 1926



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Science, New Series, Vol. 64, No. 1669, Dec. 24, 1926


Previous Issue: New Series, Vol. 64, No. 1668, Dec. 17, 1926
Next Issue: New Series, Vol. 64, No. 1670, Dec. 31, 1926


Front Matter (6 pp.)
Medicine and the Evolution of Society, pp. 603-609
John C. Merriam

Research and the Universities, pp. 609-610
Josiah H. Penniman

Fellowship in the American Association for the Advancement of Science, pp. 610-612
Burton E. Livingston

William Joseph Hussey, pp. 612-614
R. H. Curtiss


Scientific Events
Award of Prizes by the French Academy of Sciences, p. 614
Presentation of the Royal Society's Medals to Sir Frederick G. Hopkins and Dr. D. H. Scott, pp. 614-615
Appointment of A. V. Hill to the Baker Lectureship at Cornell University, pp. 615-616
Appropriation Bill of the Department of Agriculture, p. 616


Scientific Notes and News, pp. 617-620
University and Educational Notes, p. 620


Discussion and Correspondence
The Semi-Centenary of Willard Gibbs' Phase Law (1876-1926), p. 621
Ernest Cohen
Second Order Stark Effect in Hydrogen, pp. 621-622
Paul S. Epstein
Unusual Carboniferous Cephalopods, pp. 622-623
Carey Croneis
A Parasite of the Gold-Fish, p. 623
T. D. A. Cockerell
A Contemporary of Charles Darwin, pp. 623-624
Henry Fairfield Osborn


Scientific Books
----------------, p. 624
Our Mobile Earth
Reginald A. Daly
Review author[s]: Charles Schuchert
----------------, pp. 625-626
Rain-Making and Other Weather Vagaries
W. J. Humphreys
Review author[s]: Alexander McAdie


Scientific Apparatus and Laboratory Methods
Cement Casts of Petroglyphs, p. 626
Harlan I. Smith
A Simple Device for Extraction and Digestion, pp. 626-627
Charles F. Rogers


Special Articles
Correct Velocities for Echo Sounding in the Pacific Ocean, pp. 627-629
N. H. Heck; Jerry H. Service
The Importance of Minute Chemical Constituents (Infiniment Petits Chimiques) of Biological Products: Nickel, Cobalt and Insulin, pp. 629-630
Gabriel Bertrand


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1668, Dec. 17, 1926
Next Issue: New Series, Vol. 64, No. 1670, Dec. 31, 1926



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Science, New Series, Vol. 64, No. 1670, Dec. 31, 1926


Previous Issue: New Series, Vol. 64, No. 1669, Dec. 24, 1926
Next Issue: New Series, Vol. 65, No. 1671, Jan. 7, 1927


Front Matter (6 pp.)


The American Association for the Advancement of Science
Fifty Years' Progress in Electrical Communications, pp. 631-638
M. I. Pupin


The International Union of Scientific Radio Telegraphy, pp. 638-639
J. H. Dellinger

James Furman Kemp, pp. 639-642
Charles P. Berkey


Scientific Events
The Appropriation Bill of the Department of Agriculture, pp. 642-643
Results of the Subarctic Expedition of the Field Museum, pp. 643-644
Additions to the Botanical Library of the Smithsonian Institution, p. 644
The George Herbert Jones Research Laboratory at the University of Chicago, p. 644


Scientific Notes and News, pp. 645-648
University and Educational Notes, pp. 648-649


Discussion and Correspondence
What Did Darwin Write?, p. 649
A. S. Eve
Plant Physiology, pp. 649-650
O. L. Inman
Publication by Photographic Reproduction of Typewriting, p. 650
Sebastian Albrecht
A Simplified Indication for the Consonant Sound Represented by the Letters TH, p. 650
Maynard M. Metcalf


Scientific Apparatus and Laboratory Methods
Finely Regulated Movement by Using Hydraulic Devices, pp. 650-651
F. Lowell Dunn
Rapid Determination of the Moisture Content of Soils, pp. 651-652
G. J. Bouyoucos


Special Articles
Zeolite Formation in Soils, pp. 652-653
P. S. Burgess; W. T. McGeorge
Growth and Growth Formulas in Plants, pp. 653-654
H. L. Van De Sande-Bakhuyzen


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 64, No. 1669, Dec. 24, 1926
Next Issue: New Series, Vol. 65, No. 1671, Jan. 7, 1927



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