Science, New Series, Vol. 73, No. 1879, Jan. 2, 1931

Previous Issue: New Series, Vol. 72, No. 1878, Dec. 26, 1930
Next Issue: New Series, Vol. 73, No. 1880, Jan. 9, 1931

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

The American Association for the Advancement of Science

Present Status of Theory and Experiment as to Atomic Disintegration and Atomic Synthesis, pp. 1-5

Robert A. Millikan

Scientific Events

Annual Report of the Director of the U. S. Geological Survey, pp. 5-6

The National Park Service, p. 6

The Niagara Frontier Research Council, pp. 6-7

Appropriations for Grants-In-Aid by the National Research Council, p. 7

Vernon Kellogg

Officers of the American Chemical Society, pp. 7-8

Scientific Notes and News, pp. 8-11

Discussion

Our Fauna, pp. 11-12

Arthur Paul Jacot

Dinosaur Egg Shell Fragments from Montana, pp. 12-13

Glenn L. Jepsen

Consultants at the Library of Congress, pp. 13-14

H. W. Tyler

Reports

The International Geodetic and Geophysical Union, pp. 14-15

W. D. L.

Scientific Apparatus and Laboratory Methods

Pen and Ink Drawings from Photographs, p. 15

Ernest Naylor

A Method of Cleaning Microscopical Fossils, pp. 15-16

I. P. Tolmachoff

Special Articles

An Observation Which Suggests an Explanation of the Anemia in Hookworm Disease, pp. 16-17

Herbert S. Wells

A Relation between Rotenone, Deguelin and Tephrosin, pp. 17-18

E. P. Clark

Dissociation of Bacterium granulosis noguchi and Identification of the Organism by means of Rabbit Immune Sera, p. 18

E. B. Tilden

Books Received, p. 18
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 72, No. 1878, Dec. 26, 1930
Next Issue: New Series, Vol. 73, No. 1880, Jan. 9, 1931

Science, New Series, Vol. 73, No. 1880, Jan. 9, 1931

Previous Issue: New Series, Vol. 73, No. 1879, Jan. 2, 1931
Next Issue: New Series, Vol. 73, No. 1881, Jan. 16, 1931

Front Matter (4 pp.)

The American Association for the Advancement of Science

Some Chemical Aspects of the Origin of Petroleum, pp. 19-22

S. C. Lind

Some Recent Aspects of Nematology, pp. 22-29

N. A. Cobb

The Challenge of Plant Virus Differentiation and Classification, pp. 29-32

James Johnson; Isme A. Hoggan

Scientific Events

Vivisection in England, pp. 32-33

Reorganization of the National Parks Association, pp. 33-34

Robert Sterling Yard

The Bowdoin Institute of Natural Science, p. 34

Officers of the American Association for the Advancement of Science, pp. 34-35

Scientific Notes and News, pp. 35-38

Discussion

Meteor Butte, pp. 38-39

Frederick S. Dellenbaugh

Diastrophism and Discourtesy, pp. 39-41

H. L. Fairchild

The Classification of Pythium, pp. 41-42

F. K. Sparrow

Two New Dominican Formational Names, pp. 42-43

Carlotta J. Maury

Reports

Investigations in Panama during the Summer of 1930, pp. 43-45

Ernest Carroll Faust

Scientific Apparatus and Laboratory Methods

An Adjustable Drop-Control for Burettes, pp. 45-46

Franklin Hollander

Special Articles

The Relationship between Electrical Differences of Potential in the Skin and Normal Basal Metabolism, pp. 46-49

Charlotte Purdy; A. Frances Johnson; Charles Sheard

Studies in Certain Factors Affecting the Resistance of Plants to Insect Pests, pp. 49-50

Edward Philpott Mumford

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1879, Jan. 2, 1931
Next Issue: New Series, Vol. 73, No. 1881, Jan. 16, 1931

Science, New Series, Vol. 73, No. 1881, Jan. 16, 1931

Previous Issue: New Series, Vol. 73, No. 1880, Jan. 9, 1931
Next Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931

Front Matter (4 pp.)

The American Association for the Advancement of Science

Engineering Culture, pp. 51-54

H. F. Moore

Scientific and Philosophical Methods in Education, pp. 54-59

Frank N. Freeman

Obituary

Waldemar M. W. Haffkine, pp. 59-60

David I. Macht

E. Gley, p. 60

Francis G. Benedict

Memorials, p. 60

Recent Deaths, p. 60

Scientific Events

The Monongahela National Forest, pp. 60-61

Research and Industry at Purdue University, p. 61

Franklin Institute Lectures, pp. 61-62

The Bausch Memorial Bridge at Rochester, p. 62

Scientific Notes and News, pp. 62-66

Discussion

The Barringer Meteorite, pp. 66-67

D. Moreau Barringer

Concerning the Rate of Formation of Stalactites, pp. 67-68

R. W. Ellis

The Language of Clergymen, p. 68

Theodore W. Darnell; Edward S. Allen

Babylonian Mathematics, p. 68

R. C. Archibald

An Engineer in Authority, pp. 68-69

An 'Umble Scientist

Anti-Evolution Laws, p. 69

Reverend W. A. Williams

Special Correspondence

Exhibition on the Science and Art of Color, pp. 69-70

B.

Scientific Books

----------------, p. 71

The Mysterious Universe

James Jeans

Review author[s]: Harlan T. Stetson

----------------, pp. 71-72

Artificial Sunlight

M. Luckiesh

Review author[s]: F. C. Brown

Scientific Apparatus and Laboratory Methods

A New Micro-Manipulator, pp. 72-75

G. W. Fitz

Special Articles

Ovulation, Oestrus and Copulation with Consequent Dystocia during Pregnancy, in the Mouse, pp. 75-76

Lucy J. Watt

Determinate Evolution in the Genus Spirifer, pp. 76-77

Carroll Lane Fenton

Changes Occurring in Stored Alcoholic Plant Extracts, pp. 77-78

James E. Webster

Books Received, p. 78
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1880, Jan. 9, 1931
Next Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931

Science, New Series, Vol. 73, No. 1882, Jan. 23, 1931

Previous Issue: New Series, Vol. 73, No. 1881, Jan. 16, 1931
Next Issue: New Series, Vol. 73, No. 1883, Jan. 30, 1931

Front Matter (4 pp.)

The American Association for the Advancement of Science

Erosion as a Factor in Soil Determination, pp. 79-83

M. F. Miller

Observations upon the Use of the Divining Rod in Germany, pp. 84-86

C. A. Browne

Obituary

Jur. Philiptschenko, pp. 86-87

M. Rimsky-Korsakow; V. Dogiel; M. Rozanova; T. Lus; T. Liepin

Memorials, p. 87

Recent Deaths, p. 87

Scientific Events

Exhibition of the Physical and Optical Societies in London, pp. 87-88

Budget for the U. S. Department of Agriculture, pp. 88-89

Check List of the Birds of the World, p. 89

Conference on Human Problems in Industry, pp. 89-90

American Association of Teachers of Physics, p. 90

Scientific Notes and News, pp. 90-94

Discussion

The Occurrence of Natural and Acquired Immunity to Infectious Myxomatosis of Rabbits, pp. 94-95

Joseph R. Hobbs

Note on the Corn Component of a Rachitogenic Diet, p. 95

Robert S. Harris; John W. M. Bunker

Wheat Mosaic in Egypt, pp. 95-96

L. E. Melchers

The Fatal Belgian Fog, pp. 96-97

Jerome Alexander

Special Correspondence

Committee on Drug Addiction of the National Research Council, pp. 97-98

Wm. Charles White

American School of Prehistoric Research, pp. 98-99

George Grant MacCurdy

Scientific Apparatus and Laboratory Methods

Two Improvements in the Technique of Kymograph Recording, pp. 99-100

W. F. Wichart; C. H. Thienes; M. B. Visscher

Use of Ethylene Oxide for the Eradication of Pests, pp. 100-101

Rodney B. Harvey

Special Articles

The Biology of the Petroleum Fly, pp. 101-103

W. H. Thorpe

The Morphological Basis for Certain Tissue Resistance, pp. 103-105

Wm. DeB. MacNider

A New Factor in the Transportation and Distribution of Marine Sediments, pp. 105-106

Percy E. Raymond; H. C. Stetson

Books Received, p. 106
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1881, Jan. 16, 1931
Next Issue: New Series, Vol. 73, No. 1883, Jan. 30, 1931

Science, New Series, Vol. 73, No. 1883, Jan. 30, 1931

Previous Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931
Next Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931

Front Matter (4 pp.)

The American Association for the Advancement of Science

Recent Developments in Photoelectricity, pp. 107-113

C. E. Mendenhall

Psychology's Family Relations among the Sciences, pp. 113-117

Madison Bentley

Obituary

Memorials, p. 117

Recent Deaths, p. 118

Scientific Events

Calendar Reform, p. 118

The Marshall Field Archeological Expedition, p. 119

The Aztec Ruins National Monument, pp. 119-120

The New York State Forest Research Institute, p. 120

The International Congress on Illumination, pp. 120-121

Scientific Notes and News, pp. 121-124

Discussion

The Vampire Bat, pp. 124-125

Marcus Ward Lyon

Concerning Early Diagnosis of Whooping Cough, pp. 125-126

Louis W. Sauer

The Finding of Large Centipedes in Wyoming and Western Nebraska, p. 126

Harold J. Cook

The Excelsior Geyser Again, p. 126

Edwin Linton

Special Correspondence

The Ella Sachs Plotz Foundation for the Advancement of Scientific Investigation, pp. 126-127

Joseph C. Aub

Quotations

Ellwood Hendrick, pp. 128-129

Scientific Books

----------------, p. 129

The Migration of Butterflies

C. B. Williams

Review author[s]: L. O. Howard

----------------, pp. 129-130

Barlow's Tables of Squares, Cubes, Square Roots, Cube Roots and Reciprocals of All Integer Numbers up to 10,000

L. J. Comrie

Review author[s]: Charles H. Smiley

Scientific Apparatus and Laboratory Methods

A Convenient Hydrometer for Determining the Specific Gravity of Heavy Liquids, pp. 130-131

A. C. Tester

Repair of Non-Conductive Galvanometer Strings, p. 131

Chester W. Darrow

A Siphon Moist Chamber for Microscopic Mounts, pp. 131-132

Florence A. McCormick

Special Articles

Some Peculiarities in the Thermo-Electric Properties of Monel Metal, pp. 132-133

Emery Meschter

Strophanthin. XIX. The Dehydrogenation of Strophanthidin and Gitoxigenin, pp. 133-134

Walter A. Jacobs; Elmer E. Fleck

The Fauna of the Middle Devonian Beauvais Sandstone of Missouri, pp. 134-135

Carey Croneis; Arnold D. Hoffman

Responses of Sheep to Zygadenus gramineus, "Death Camas", pp. 135-136

Alvah R. McLaughlin

Books Received, p. 136
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931
Next Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931

Science, New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931

Previous Issue: New Series, Vol. 73, No. 1883, Jan. 30, 1931
Next Issue: New Series, Vol. 73, No. 1885, Feb. 13, 1931

Front Matter (4 pp.)
The American Association for the Advancement of Science: Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies, pp. 137-168
Science News, pp. xlii+xliv+xlvi
Back Matter (1 p.)

Previous Issue: New Series, Vol. 73, No. 1883, Jan. 30, 1931
Next Issue: New Series, Vol. 73, No. 1885, Feb. 13, 1931

Science, New Series, Vol. 73, No. 1885, Feb. 13, 1931

Previous Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931
Next Issue: New Series, Vol. 73, No. 1886, Feb. 20, 1931

Front Matter (4 pp.)

The American Association for the Advancement of Science

Some Present-Day Problems of Zoology Teaching, pp. 169-173

William A. Riley

Planes of Lateral Corrasion, pp. 174-177

Douglas Johnson

Scientific Events

Resolutions Adopted by the Council of the American Association for the Advancement of Science at Cleveland, pp. 177-178

In Honor of Professor James Ewing, p. 178

B. J. L.

The New York Post-Graduate Medical School and Hospital and Columbia University, pp. 178-179

The Braun-Schuchert Collection, p. 179

Conference on Medical Education, pp. 179-180

Meeting of Geologists at Toronto, p. 180

Scientific Notes and News, pp. 180-184

Discussion

Evidence of a Lower Level of Lake Superior, p. 185

L. R. Wilson

The Structure of Some Industrial Diamonds, pp. 185-186

Jerome Alexander

Bacterial Stem-Rot Disease of Hybrid Seedling Canes, p. 186

E. F. Roldan

The Foucault Experiment, p. 186

Martin Meyer

Scientific Books

----------------, pp. 186-189

A History of Applied Entomology (Somewhat Anecdotal)

L. O. Howard

Review author[s]: T. D. A. Cockerell

Scientific Apparatus and Laboratory Methods

A New Spring Balance for Measuring Water Content of Snow, pp. 189-190

George D. Clyde

Special Articles

Comparison between Irradiation of Diet and Supplemental Irradiation of Animals in Vitamin A and D Deficiency, pp. 190-191

F. E. Chidester; A. G. Eaton; N. K. Speicher

Hydrogen-Ion Concentration of the Alimentary Tracts of Fowl, Cat and Rabbit, pp. 191-192

Alvah R. McLaughlin

Twist in the Grain of Coniferous Trees, p. 192

Chester K. Wentworth

Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931
Next Issue: New Series, Vol. 73, No. 1886, Feb. 20, 1931

Science, New Series, Vol. 73, No. 1886, Feb. 20, 1931

Previous Issue: New Series, Vol. 73, No. 1885, Feb. 13, 1931
Next Issue: New Series, Vol. 73, No. 1887, Feb. 27, 1931

Front Matter (4 pp.)
A Botanical Problem, pp. 193-197

Margaret C. Ferguson

Herbert Hoover and Science, pp. 197-199

Vernon Kellogg

Obituary

Memorials, p. 199

Recent Deaths, pp. 199-200

Scientific Events

Museum Specimens, pp. 200-201

Field Museum of Natural History, p. 201

Latin American Fellows of the Guggenheim Foundation, pp. 201-202

National Research Fellowships in the Biological Sciences, p. 202

Frank R. Lillie

The Indianapolis Meeting of the American Chemical Society, pp. 202-203

Scientific Notes and News, pp. 203-207

Discussion

Origin of Palouse Hills Topography, pp. 207-209

Virgil R. D. Kirkham; M. Melville Johnson; Donald Holm

A Fossil Cycad in New Jersey, pp. 209-210

M. A. Chrysler

Plural Fractions, p. 210

C. E. Waters

Why Pathogene Rather Than Pathogen?, pp. 210-211

F. L. Stevens

Scientific Books

----------------, pp. 211-212

Living Africa. A Geologist's Wanderings through the Rift Valleys

Bailey Willis

Review author[s]: Charles Schuchert

Scientific Apparatus and Laboratory Methods

A Method of Staining the Oocysts of Coccidia, pp. 212-213

H. B. Crouch; E. R. Becker

The Ligation of Earthworms to Remove the Anterior Or Posterior End, p. 213

L. S. Rowell

Special Articles

On a Release-Phenomenon in Electrical Stimulation of the "Motor" Cerebral Cortex, pp. 213-214

J. G. Dusser De Barenne; Clyde Marshall

The Etiology of Swine Influenza, pp. 214-215

Richard E. Shope

Measuring Absorbed Phosphates and Nitrogen, pp. 215-216

W. J. Spillman

Books Received, p. 216
Science News, pp. 10-14

Previous Issue: New Series, Vol. 73, No. 1885, Feb. 13, 1931
Next Issue: New Series, Vol. 73, No. 1887, Feb. 27, 1931

Science, New Series, Vol. 73, No. 1887, Feb. 27, 1931

Previous Issue: New Series, Vol. 73, No. 1886, Feb. 20, 1931
Next Issue: New Series, Vol. 73, No. 1888, Mar. 6, 1931

Front Matter (4 pp.)
Science and the Supernatural, pp. 217-225

A. J. Carlson

Cope: Master Naturalist, pp. 225-227

Henry Fairfield Osborn

Scientific Events

The Baltic Geodetic Commission, p. 227

W. D. L.

The International Biological Congress at Montevideo, pp. 227-228

C. E. McClung

Lectures of the Philadelphia Academy of Natural Sciences, p. 228

The Federation of American Societies for Experimental Biology, pp. 228-229

Howard B. Lewis

The Pasadena Meeting of the American Association and the Associated Societies, p. 229

Scientific Notes and News, pp. 229-234

Discussion

Meteor Crater is Not a Limestone Sink, pp. 234-235

Chester R. Longwell

Branchinecta at Leadville, Colorado, pp. 235-236

Chas. H. Behre

Hearing without Cochlea?, pp. 236-237

Max F. Meyer

Coccidioidal Granuloma, p. 237

Frederick W. Shaw

Quotations

British Optical Instruments, pp. 237-238

Scientific Books

----------------, pp. 238-240

The Life, Letters and Labours of Francis Galton

Karl Pearson

Review author[s]: Raymond Pearl

Scientific Apparatus and Laboratory Methods

Hint for Better Geological Photographs, p. 241

Eliot Blackwelder

A Siphon Moist Chamber, p. 241

C. C. Thomas

Special Articles

A Direct Quantitative Relationship between Vitamin A in Corn and the Number of Genes for Yellow Pigmentation, pp. 241-242

P. C. Mangelsdorf; G. S. Fraps

A Differentiation of the So-Called Antipellagric Factor, Vitamin G, pp. 242-243

Barnett Sure; Margaret Elizabeth Smith; M. C. Kik

Liver Extract as a Source of Vitamins B and G, pp. 243-244

W. D. Salmon; N. B. Guerrant

Books Received, p. 244
Science News, pp. 10-14

Previous Issue: New Series, Vol. 73, No. 1886, Feb. 20, 1931
Next Issue: New Series, Vol. 73, No. 1888, Mar. 6, 1931

Science, New Series, Vol. 73, No. 1888, Mar. 6, 1931

Previous Issue: New Series, Vol. 73, No. 1887, Feb. 27, 1931
Next Issue: New Series, Vol. 73, No. 1889, Mar. 13, 1931

Front Matter (4 pp.)
Mass Action in Cerebral Function, pp. 245-254

K. S. Lashley

Obituary

Ignatius Urban, pp. 254-255

Paul C. Standley

Erik L. Ekman, pp. 255-256

Paul C. Standley

Recent Deaths, p. 256

Scientific Events

Institution for Surgical Biological Research at Downe, p. 256

Observations for the Determination of Longitudes, pp. 256-257

The Ohio Academy of Science, p. 257

The Yale Oceanographic Expedition to the Bahama Islands, pp. 257-258

Scientific Notes and News, pp. 258-262

Discussion

Isolation of Protein Crystals Possessing Tryptic Activity, pp. 262-263

John H. Northrop; M. Kunitz

Yellow-Spot Disease of Pineapples Transmitted by Thrips tabaci Lind, p. 263

Maurice B. Linford

Fracturing and Movement in Rocks without Apparent Displacement, pp. 263-264

A. H. Sutton

An Unusual Rainbow, p. 264

Robt. E. S. Heineman

Scientific Books

----------------, pp. 264-265

Thomas Say, Early American Naturalist

Harry B. Weiss; Grace M. Ziegler

Review author[s]: T. D. A. Cockerell

Scientific Apparatus and Laboratory Methods

A New Singing Tube, pp. 265-266

F. L. Robeson

A Simple Microscope Eyepiece Pointer, p. 266

James A. Lounsbury

Special Articles

Observations concerning the Causative Agent of a Chicken Tumor, pp. 266-268

James B. Murphy; O. M. Helmer; Albert Claude; Ernest Sturm

The Dehydrogenation of Chlorophyll and the Mechanism of Photosynthesis, p. 268

J. B. Conant; E. M. Dietz; S. E. Kamerling

Books Received, p. 268
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1887, Feb. 27, 1931
Next Issue: New Series, Vol. 73, No. 1889, Mar. 13, 1931

Science, New Series, Vol. 73, No. 1889, Mar. 13, 1931

Previous Issue: New Series, Vol. 73, No. 1888, Mar. 6, 1931
Next Issue: New Series, Vol. 73, No. 1890, Mar. 20, 1931

Front Matter (4 pp.)
The Relation of Physics to Chemistry, pp. 269-276

N. V. Sidgwick

Edward W. Morley, Chemist, Investigator, Teacher, pp. 276-277

Charles Franklin Thwing

Obituary

Recent Deaths, pp. 277-278

Memorials, p. 278

Scientific Events

The Constitution of the Royal College of Surgeons, p. 278

The State Parks and Forests of New Jersey, pp. 278-279

Federal Legislation, p. 279

Appropriations for Grants-In-Aid by the National Research Council, p. 280

Vernon Kellogg

Scientific Notes and News, pp. 280-283

Discussion

More Evidence of Mammoths in the High Mountains of Colorado, pp. 283-284

Harold J. Cook

Beach Sands of the Atlantic Coast, pp. 284-285

Gerald R. MacCarthy

The Specific Effect of Vitamin B on Lactation, Growth and Water Metabolism, p. 285

Barnett Sure; M. C. Kik; M. E. Smith; D. J. Walker

The Eskimo Word "Iglu", pp. 285-286

Vilhjalmur Stefansson

Truth Versus Advertising, p. 286

H. H. Bunzell

Scientific Books

----------------, pp. 286-287

Peru from the Air

George R. Johnson

Review author[s]: C. H. Birdseye

A New Book on Beetles, pp. 287-288

Review author[s]: W. S. Blatchley

Scientific Apparatus and Laboratory Methods

A Cooling Unit for Low-Temperature Thermostats, pp. 288-289

T. J. B. Stier

A Vacuum Tube Method of Temperature Control, pp. 289-290

Francis O. Schmitt; Otto H. A. Schmitt

Societies and Academies, pp. 290-291

Special Articles

On the Monomethyl-Glucose of Pacsu, pp. 291-292

P. A. Levene; G. M. Meyer; A. L. Raymond

The Effect of Physical and Chemical Agents on the Oocysts of Eimeria tenella, pp. 292-293

Frederic Fish

Gonadectomy in the Goldfish Carassius auratus, pp. 293-295

I. B. Hansen

The Relation between the Estrus-Producing Hormone and a Corpus Luteum Extract on the Growth of the Mammary Gland, pp. 295-296

C. W. Turner; A. H. Frank

Books Received, p. 296
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1888, Mar. 6, 1931
Next Issue: New Series, Vol. 73, No. 1890, Mar. 20, 1931

Science, New Series, Vol. 73, No. 1890, Mar. 20, 1931

Previous Issue: New Series, Vol. 73, No. 1889, Mar. 13, 1931
Next Issue: New Series, Vol. 73, No. 1891, Mar. 27, 1931

Front Matter (4 pp.)
The New Cytology, pp. 297-303

Alexis Carrel

The Advancement of Horticultural Research, pp. 303-306

A. T. Erwin

Scientific Events

International Meetings in England, pp. 306-307

The Fifteenth International Congress of Agriculture, p. 307

The Pasadena Meeting, p. 307

Charles F. Roos

Fellowship in Memory of Jay Backus Woodworth, p. 308

Award of the Leidy Medal of the Academy of Natural Sciences of Philadelphia, p. 308

Scientific Notes and News, pp. 308-313

Discussion

Deposition of Sediment in Lakes by Glacial Streams, pp. 313-314

O. D. Von Engeln

Suffocation Point in the Horned Lizard, Phrynosoma Cornutum, pp. 314-315

George E. Potter

Gradual Obliteration of the Portal Vein as a Substitute for Eck-Fistula, p. 315

Lester R. Dragstedt

Devil's Shoe-String as an Insecticide, pp. 315-316

V. A. Little

Biochemistry in Relation to Intelligence, p. 316

H. D. Powers

The Language of a Clergyman, pp. 316-317

George W. Lay

Scientific Books

----------------, pp. 317-319

The Stars of High Luminosity

Cecilia H. Payne

Review author[s]: O. Struve

Scientific Apparatus and Laboratory Methods

A Note on Capsule Staining, pp. 319-320

E. E. Anthony

Preparation of Bee Slides, p. 320

L. S. Rowell

Chemical Treatments to Shorten the Rest Period of Tree Seeds, pp. 320-321

Carl G. Deuber

Special Articles

The Biological Effect of High Voltage X-Rays, pp. 321-322

Charles Packard; C. C. Lauritsen

The Cortico-Adrenal Hormone, pp. 322-323

S. W. Britton; Herbert Silvette

Premature Reversal of Heart-Beat in Bombyx, pp. 323-325

John H. Gerould

Amoeboid Motion as the Product of Protein Swelling, pp. 325-326

Stanley W. Whitehouse

Books Received, p. 326
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1889, Mar. 13, 1931
Next Issue: New Series, Vol. 73, No. 1891, Mar. 27, 1931

Science, New Series, Vol. 73, No. 1891, Mar. 27, 1931

Previous Issue: New Series, Vol. 73, No. 1890, Mar. 20, 1931
Next Issue: New Series, Vol. 73, No. 1892, Apr. 3, 1931

Front Matter (4 pp.)
The Origin of Limestone Caverns, pp. 327-331

W. M. Davis

Edgar Fahs Smith: Provost, Chemist, Friend, pp. 331-333

Charles Franklin Thwing

Obituary

Memorials, p. 333

Recent Deaths, p. 333

Scientific Events

An Agricultural Research Institute for Porto Rico, p. 334

Virgin Forest Lands of the United States, pp. 334-335

The Field Museum of Natural History, p. 335

The American Philosophical Society, pp. 335-336

Scientific Notes and News, pp. 336-339

Discussion

The Importance of Giving Page References in Descriptions of Plates, pp. 339-340

Robert Tracy Jackson

Cytoplasmic Inheritance of Male Sterility in Zea Mays, pp. 340-341

Marcus M. Rhoades

Trees with Twisted Bark, p. 341

Arthur Taber Jones

Panaman Or Panamanian?, p. 341

Carleton R. Ball

Estrus, pp. 341-342

S. A. Asdell

An Apologetic Correction, p. 342

L. O. Howard

Scientific Books

----------------, p. 342

La Parthénogenèse

A. Vandel

Review author[s]: Franz Schrader

----------------, p. 343

Star Clusters

Harlow Shapley

Review author[s]: Dirk Brouwer

Scientific Apparatus and Laboratory Methods

A Device for Washing Tissues, pp. 343-344

C. T. Hurst

A Machine for Pulling Glass Micropipettes and Needles, pp. 344-345

Delafield Du Bois

Special Articles

Brain Water Movement during Anesthesia, pp. 346-347

H. G. Barbour

Metallized Food in the Regeneration of Hemoglobin in Rat and Man, pp. 347-348

J. L. McGhee

Books Received, p. 348
Science News, pp. 10a-14a
Back Matter (4 pp.)

Previous Issue: New Series, Vol. 73, No. 1890, Mar. 20, 1931
Next Issue: New Series, Vol. 73, No. 1892, Apr. 3, 1931

Science, New Series, Vol. 73, No. 1892, Apr. 3, 1931

Previous Issue: New Series, Vol. 73, No. 1891, Mar. 27, 1931
Next Issue: New Series, Vol. 73, No. 1893, Apr. 10, 1931

Front Matter (4 pp.)
Is an International Zoological Nomenclature Practicable?, pp. 349-354

C. W. Stiles

Obituary

George Peter Dreyer, p. 355

H. A. McGuigan

Recent Deaths, pp. 355-356

Scientific Events

Australian Vital Statistics, p. 356

The Pacaraima-Venezuela Expedition, p. 356

Shenandoah Park Highway, pp. 356-357

The Springfield Museum, p. 357

The Third International Congress of Eugenics, pp. 357-358

Scientific Notes and News, pp. 358-363

Discussion

Erroneous Citations and Titles of Scientific Papers, pp. 363-364

C. A. Shull

A Further Comment on the "Pumping" Habit of Plant Lice, p. 364

Floyd F. Smith

The Divining Rod, p. 365

Ernest C. Bryant

The Use of the Divining Rod in Gold Prospecting in Alaska, pp. 365-366

I. P. Tolmachoff

A Banked Race-Track Illusion, pp. 366-367

H. Austin Aikins

Societies and Academies, pp. 367-368

Scientific Apparatus and Laboratory Methods

A Method of Making Topographic Models, pp. 368-369

Chauncey D. Holmes

An Oscillator and Synchronous Motor for Obtaining Exact Variable Speeds, pp. 369-370

Roland C. Davis; Frank A. Geldard

Special Articles

A Flowering Cycadeoid from the Isle of Wight, pp. 370-372

G. R. Wieland

The Neuro-Muscular Mechanism Controlling Flashing in the Lampyrid Fireflies, pp. 372-373

Peter A. Snell

Some Observations on the Corticoadrenal Hormone, pp. 373-374

S. W. Britton; Herbert Silvette

Books Received, p. 374
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1891, Mar. 27, 1931
Next Issue: New Series, Vol. 73, No. 1893, Apr. 10, 1931

Science, New Series, Vol. 73, No. 1893, Apr. 10, 1931

Previous Issue: New Series, Vol. 73, No. 1892, Apr. 3, 1931
Next Issue: New Series, Vol. 73, No. 1894, Apr. 17, 1931

Front Matter (4 pp.)

Professor Einstein at the California Institute of Technology

Addresses at the Dinner in His Honor, pp. 375-379

Allan C. Balch; Ballard; Millikan; Michelson; Campbell; Einstein

Address at the Luncheon, pp. 379-380

Frederick H. Seares

The Reason and the Results of Dr. Einstein's Visit to the California Institute of Technology, pp. 380-381

Robert A. Millikan; Walter S. Adams

Obituary

James Perrin Smith, pp. 382-383

Solon Shedd

Recent Deaths, p. 383

Scientific Events

Geophysical Surveys, pp. 383-384

Customs Duties on Scientific Apparatus, p. 384

The Sinnott Memorial in the Crater Lake National Park, pp. 384-385

A Division of Plant Pathology at the Rockefeller Institute for Medical Research, p. 385

Conference on the Promotion of Interest in Physics, pp. 385-386

Birthdays and Research Centers, p. 386

Scientific Notes and News, pp. 386-389

Discussion

A Uniform Scheme for Citations, pp. 390-392

Bernard H. Lane

Regarding Twist in Conifers, pp. 392-393

W. C. Yeager

The Growth of Stalactites, p. 393

Gragg Richards

A Case of a Boy Possessing an Automatic Directional Orientation, pp. 393-394

Harry R. DeSilva

Mendelian Differences, p. 394

R. Ruggles Gates

Scientific Apparatus and Laboratory Methods

The Removal of Traces of Oxygen from Nitrogen, pp. 394-397

E. C. Kendall

Special Articles

The Chemical Changes that Occur during the Curing of Tobacco Leaves, pp. 397-399

Hubert Bradford Vickery; George W. Pucher

Pollen-Statistics: A New Research Method in Paleo-Ecology, pp. 399-401

G. Erdtman

Structural and Functional Variations of Fibroblasts in Pure Cultures, pp. 401-402

Raymond C. Parker

Books Received, p. 402
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1892, Apr. 3, 1931
Next Issue: New Series, Vol. 73, No. 1894, Apr. 17, 1931

Science, New Series, Vol. 73, No. 1894, Apr. 17, 1931

Previous Issue: New Series, Vol. 73, No. 1893, Apr. 10, 1931
Next Issue: New Series, Vol. 73, No. 1895, Apr. 24, 1931

Front Matter (4 pp.)
Individual Differences in Human Blood, pp. 403-409

Karl Landsteiner

Obituary

John Henry Comstock, pp. 409-410

James G. Needham

Memorials, pp. 410-411

Recent Deaths, p. 411

Scientific Events

The Calcutta Institute of Hygiene and Public Health, pp. 411-412

Field Expeditions of the Smithsonian Institution, p. 412

Meeting of the National Advisory Health Council, pp. 412-413

Research at the Mellon Institute, pp. 413-414

Scientific Notes and News, pp. 414-417

Discussion

A Method for Explanting the Kidney, p. 417

C. P. Rhoads

Central Bodies in the Sperm-Forming Divisions of Ascaris, pp. 417-418

Harwell P. Sturdivant

More about Shipworms, pp. 418-420

Paul Bartsch

The Russian Academy of Sciences, pp. 420-421

T. D. A. Cockerell

A Conference on Heredity as Applied to Man, p. 421

E. P. Lyon

Scientific Books

----------------, pp. 422-423

A Textbook of Plant Physiology

N. A. Maximov

Review author[s]: G. J. Peirce

----------------, pp. 423-424

Introduction à la Biologie Expérimentale. Les Êtres Organisés. Activités, Instincts, Structures

Paul Vignon

Review author[s]: John H. Gerould

Scientific Apparatus and Laboratory Methods

An Automatic Balance, pp. 424-426

F. J. Veihmeyer; C. H. Hofmann; C. V. Givan

Sectioning Orbitoid Foraminifera, pp. 426-427

Willard Berry

Special Articles

A Possible Physiological Interpretation of the Law of the Diminishing Increment, pp. 427-429

Walter A. Hendricks; Morley A. Jull; Harry W. Titus

The Rôle of Copper in the Setting and Metamorphosis of the Oyster, pp. 429-431

Herbert F. Prytherch

Experiments in Termite Caste Development, p. 431

Harold Heath

Dioecious Maize, p. 432

Donald F. Jones

Books Received, p. 432
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1893, Apr. 10, 1931
Next Issue: New Series, Vol. 73, No. 1895, Apr. 24, 1931

Science, New Series, Vol. 73, No. 1895, Apr. 24, 1931

Previous Issue: New Series, Vol. 73, No. 1894, Apr. 17, 1931
Next Issue: New Series, Vol. 73, No. 1896, May 1, 1931

Front Matter (4 pp.)
Michael Faraday, pp. 433-439

W. F. G. Swann

Scientific Events

The Imperial Agricultural Research Bureaus, p. 440

Mineral Values in Alaska, pp. 440-441

The Forest Service and Highway Commissions, p. 441

Lectures in Physics at the University of Michigan, pp. 441-442

The Botanical Society of America, p. 442

Scientific Notes and News, pp. 442-446

Discussion

The Central Bodies Again, pp. 447-448

Edmund B. Wilson; Alfred F. Huettner

A New Posterior Pituitary Preparation, p. 448

C. G. MacArthur

The Occurrence of Filterable Forms of Bacteria in Nature, pp. 448-449

James M. Sherman; Clair E. Safford

Positive Gas and Water Pressure in Oaks, p. 449

C. A. Abell; C. R. Hursh

Analyses of the Blood of Idiots, pp. 449-450

Sidney S. Negus

Drawings from Photographs, p. 450

G. E. MacGinitie

Quotations

Industry and Scientific Research, pp. 450-451

Societies and Academies, p. 451

Scientific Apparatus and Laboratory Methods

An Adjustable Double-Slit, p. 452

R. William Shaw

A Fused Quartz Féry Prism, pp. 452-453

Nora M. Mohler

Sap for Analysis by Bleeding Corn Plants, p. 453

M. W. Lowry; Paul Tabor

Special Articles

Humidity and Comfort, pp. 453-455

W. H. Howell

Modification of Therapeutic Sera with a View of Avoiding Complications of Allergic Nature, pp. 455-457

J. Bronfenbrenner; D. M. Hetler; I. O. Eagle

A Possible Relationship between Hemoglobin and Chlorophyll as Shown by the Use of Liver Extract, pp. 457-458

Oran Raber

The Life Cycles of Trichogramma minutum in Relation to Temperature, p. 458

S. E. Flanders

Books Received, p. 458
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1894, Apr. 17, 1931
Next Issue: New Series, Vol. 73, No. 1896, May 1, 1931

Science, New Series, Vol. 73, No. 1896, May 1, 1931

Previous Issue: New Series, Vol. 73, No. 1895, Apr. 24, 1931
Next Issue: New Series, Vol. 73, No. 1897, May 8, 1931

Front Matter (4 pp.)
Sugars in the Service of Chemistry, pp. 459-462

P. A. Levene

Michael Faraday. II, pp. 462-468

W. F. G. Swann

Obituary

Norifumi Okamoto, pp. 468-469

David Eugene Smith

Memorials, p. 469

Recent Deaths, p. 469

Scientific Events

The Zoological Society of London, p. 470

The American Association of Museums, pp. 470-471

Decrease in the Number of Schools of Medicine, p. 471

Delegates to the Ninth International Dairy Congress, p. 471

The American Philosophical Society, pp. 471-472

Scientific Notes and News, pp. 472-475

Discussion

Erasmus Darwin and the Biologic Control of Insects, pp. 475-476

William A. Riley

A Mathematical Proof, pp. 476-477

G. A. Miller

More about Twisted Grain in Trees, p. 477

Arthur Koehler

Publication of Industrial Research, pp. 477-478

Watson Davis

The Life of Books, p. 478

Joseph Leidy

Reports

The Milton and Clark Awards at Harvard University, pp. 478-480

Scientific Apparatus and Laboratory Methods

A Modified Form of Kundt's Tube, p. 480

R. C. Colwell

An Inexpensive Glass Marking Pencil, p. 480

Charles B. DeWitt

Special Articles

The Effects of Ultra-Violet Light on Paramaecium, pp. 480-481

L. B. Rentschler

The North American Lung Fluke, pp. 481-482

Franklin Gerhard Wallace

A Preliminary Note on the Occurrence of a Color Mutation in the House Mouse (Mus musculus), p. 482

Joseph M. Murray

Books Received, p. 482
Errata: Dr. Karl Landsteiner's Article, April 17th Issue, p. 482
Science News, pp. 10a-14a
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 73, No. 1895, Apr. 24, 1931
Next Issue: New Series, Vol. 73, No. 1897, May 8, 1931

Science, New Series, Vol. 73, No. 1897, May 8, 1931

Previous Issue: New Series, Vol. 73, No. 1896, May 1, 1931
Next Issue: New Series, Vol. 73, No. 1898, May 15, 1931

Front Matter (4 pp.)
Technology and Material Progress, pp. 483-486

Willis R. Whitney

Obituary

Earl Douglass, pp. 486-487

O. A. Peterson

Erik Ekman--An Appreciation, pp. 487-488

George N. Wolcott

Recent Deaths, p. 488

Scientific Events

The Bermuda Biological Station for Research, pp. 488-489

The Sixth International Congress of Genetics, pp. 489-490

The National Academy of Sciences, p. 490

Scientific Notes and News, pp. 490-494

Discussion

Crystalline Pepsin of Northrop, p. 494

P. A. Levene; J. H. Helberger

Vitamin D in Whole Corn, pp. 494-495

Harry Goldblatt

Viability and Retention of Virulence of a Culture of Coryne-Bacterium Diphtheriae, p. 495

Laura Florence

Formalin Poisoning, pp. 495-496

Philip H. Pope

Basking Sharks on the Pacific Coast, p. 496

G. E. MacGinitie

Color, p. 496

W. A. Noyes

The Origin of Cosmic Rays, p. 497

Louis S. Kassel

Quotations

The Chemical Exposition, p. 497

Scientific Books

----------------, p. 498

Numerical Mathematical Analysis

James B. Scarborough

Review author[s]: Dirk Brouwer

----------------, p. 498

The Organization of Knowledge and the System of the Sciences

Henry Evelyn Bliss

Review author[s]: Paul R. Heyl

Scientific Apparatus and Laboratory Methods

A High Temperature Electric Furnace and a Micro-Adaptation, pp. 499-500

R. C. Emmons

Special Articles

The Structure of Glucose, pp. 500-501

Harold Hibbert

North American Fresh-Water Sponges, pp. 501-502

N. Gist Gee

The National Academy of Sciences, pp. 502-508
Books Received, p. 508
Science News, pp. 10a-14a

Previous Issue: New Series, Vol. 73, No. 1896, May 1, 1931
Next Issue: New Series, Vol. 73, No. 1898, May 15, 1931

Science, New Series, Vol. 73, No. 1898, May 15, 1931

Previous Issue: New Series, Vol. 73, No. 1897, May 8, 1931
Next Issue: New Series, Vol. 73, No. 1899, May 22, 1931

Front Matter (4 pp.)

The Union of American Biological Societies and Biological Abstracts

The Washington Conference of March 7, 1931, pp. 509-512

W. C. Curtis

Biological Abstracts, pp. 512-516

J. R. Schramm

The Union and Biological Abstracts, pp. 517-518

C. E. McClung

The American Association for the Advancement of Science

Preliminary Announcement of the Pasadena Meeting, pp. 518-520

Charles F. Roos

Scientific Events

Geological Surveys in Alaska, p. 521

Economic Conference for Engineers of the Stevens Institute of Technology, pp. 521-522

The Ecological Society of America, p. 522

The Centenary Meeting of the British Association for the Advancement of Science, pp. 522-523

Scientific Notes and News, pp. 523-526

Discussion

Undertow and Rip Tides, pp. 526-527

W. M. Davis

New Mastodon Finds in European Turkey, pp. 527-528

George D. Hubbard

Vegetative Propagation in the Missouri Gourd, p. 528

N. F. Petersen

Meiosis in Hypericum punctatum lam, pp. 528-529

Carl S. Hoar

Softening Tissues, p. 529

A. B. Couch

Scientific Apparatus and Laboratory Methods

Use of an Improved Null Instrument for Glass Electrode Or Other High Resistance Circuits, pp. 529-530

Samuel E. Hill

A Tilting Stopcock, p. 530

P. Lecomte Du Noüy

Special Articles

A Mottled-Eyed Drosophila, pp. 530-531

J. T. Patterson; T. S. Painter

The Effects of X-Rays on the Growth of Wheat Seedlings, pp. 531-533

Ware Cattell

Respiration Studies on Azotobacter under Controlled Conditions, pp. 533-534

J. M. Fife

The National Academy of Sciences. II, pp. 534-538
Books Received, p. 538
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1897, May 8, 1931
Next Issue: New Series, Vol. 73, No. 1899, May 22, 1931

Science, New Series, Vol. 73, No. 1899, May 22, 1931

Previous Issue: New Series, Vol. 73, No. 1898, May 15, 1931
Next Issue: New Series, Vol. 73, No. 1900, May 29, 1931

Front Matter (4 pp.)
The Recent Change of Attitude toward the Law of Cause and Effect, pp. 539-547

P. W. Bridgman

Paleontology Versus Devriesianism and Genetics in the Factors of the Evolution Problem, pp. 547-549

Henry Fairfield Osborn

Obituary

Albert A. Michelson, pp. 549-550

Robert A. Millikan

Veranus Alva Moore--Pierre Augustine Fish, pp. 550-553

Simon Henry Gage

Memorials, p. 553

Recent Deaths, p. 553

Scientific Events

The Lakeside Hospital in Cleveland, p. 553

The New Orleans Chapter of the Pan American Medical Association, pp. 553-554

The Kentucky Academy of Science, p. 554

A. M. Peter

The Kansas Academy of Science, pp. 554-555

George E. Johnson

The Medal Meeting of the Franklin Institute, p. 555

Scientific Notes and News, pp. 555-560

Discussion

Biological Abstracts, pp. 560-561

Frank R. Lillie

Twisted Trees, p. 561

A. R. Cahn

The Mechanism of Crossing-Over, pp. 561-562

C. D. Darlington

Advances in the Biological Sciences, p. 562

W. R. G. Atkins

Literature Relating to Cod Liver Oil, pp. 562-563

J. C. Drummond; T. P. Hilditch

Inscriptions for a Scientific Building, p. 563

George L. Omwake

Scientific Books

----------------, pp. 563-565

A History of Entomology

E. O. Essig

Review author[s]: W. R. Walton

Scientific Apparatus and Laboratory Methods

The Shapometer: A Device for Measuring the Shapes of Pebbles, pp. 565-566

Allen C. Tester; H. X. Bay

Apparatus to Circulate Liquid under Constant Pressure in a Closed System, p. 566

Special Articles

Growth of Plants under Continuous Light, pp. 566-567

Francis Ramaley

A Maximum Point in an Effect of Prolonged X-Ray Irradiation upon Drosophila Larvae, pp. 567-568

Robert Tennant

The Effect of Sunlight on Human Blood Cells, p. 568

W. W. Lepeschkin

The Isolation of Normal Propyl Guaiacol as a Degradation Product of Lignin, pp. 568-570

Max Phillips

Books Received, p. 570
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1898, May 15, 1931
Next Issue: New Series, Vol. 73, No. 1900, May 29, 1931

Science, New Series, Vol. 73, No. 1900, May 29, 1931

Previous Issue: New Series, Vol. 73, No. 1899, May 22, 1931
Next Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931

Front Matter (4 pp.)
The Genetic View-Point, pp. 571-577

Albert F. Blakeslee

An Optimistic View of the Evolution of the Sciences, pp. 577-579

Virgil F. Payne

Obituary

Raoul Gautier, pp. 579-580

William Bowie

Whitman Howard Jordan, p. 580

A. A. Himwich, pp. 580-581

M. D.

Recent Deaths, p. 581

Scientific Events

The Third International Conference on Bituminous Coal, pp. 581-582

The Laboratory of Anthropology at Santa Fe, New Mexico, p. 582

National Research Fellowships in the Biological Sciences, pp. 582-583

Frank R. Lillie

The Diamond Jubilee of the St. Louis Academy of Science, p. 583

The American Academy of Arts and Sciences, pp. 583-584

Scientific Notes and News, pp. 584-587

Discussion

The Program of the University Association for the Study of Calendar Reform, pp. 587-588

C. C. Wylie

Plural Fractions and Other Fractions, pp. 588-589

W. Edwards Deming

The Accumulation of Strong Electrolytes in Living Cells, pp. 589-590

S. C. Brooks

A Curious Color Phenomenon, p. 590

Paul E. Klopsteg

The Auto-Traction Hypothesis of Crustal Dynamics and Mechanics, p. 590

J. S. DeLury

Scientific Books

----------------, pp. 590-591

Atlas Céleste

E. Delporte

Review author[s]: Dirk Brouwer

----------------, pp. 591-592

Lingnan Science Journal (Continuation of Lingnaam Agricultural Review)

Review author[s]: L. O. Howard

Scientific Apparatus and Laboratory Methods

A Modification of Krogh's Differential Manometer, pp. 592-593

David E. Fink

The Phyllotax--A Practical Apparatus for Demonstrating Divergence, p. 593

Jacques Rousseau

Special Articles

Onchocerciasis in Guatemala, pp. 593-594

Richard P. Strong

Intranuclear Inclusions in Laryngotracheitis of Chickens, pp. 594-595

Oskar Seifried

Ionic Equilibria in the Serum in Relation to the Critical Temperature, pp. 595-597

P. Lecomte Du Noüy

The Possible Rôle of Micro-Organisms in the Precipitation of Calcium Carbonate in Tropical Seas, pp. 597-598

Werner Bavendamm

Books Received, p. 598
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1899, May 22, 1931
Next Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931

Science, New Series, Vol. 73, No. 1901, Jun. 5, 1931

Previous Issue: New Series, Vol. 73, No. 1900, May 29, 1931
Next Issue: New Series, Vol. 73, No. 1902, Jun. 12, 1931

Front Matter (4 pp.)
Dr. Karl Landsteiner: Nobel Prize Laureate in Medicine, 1930, pp. 599-604

Stanhope Bayne-Jones

Obituary

Louis Hermann Pammel, pp. 604-605

A. T. Erwin

Memorials, p. 605

Recent Deaths, p. 605

Scientific Events

Gift from Mr. Harkness of an Eye Institute to the Presbyterian Hospital at the Columbia Medical Center, p. 606

The Sixteenth International Geological Congress, pp. 606-607

The American School of Prehistoric Research, p. 607

Summer Meeting and Tour of the American Phytopathological Society, p. 607

In Honor of Professor R. W. Wood, pp. 607-608

Scientific Notes and News, pp. 608-612

Discussion

Is an International Zoological Nomenclature Practicable?, pp. 612-613

F. A. Bather

A Conference on Heredity as Applied to Man, pp. 613-614

Madge Thurlow Macklin

The Cultivation of a Nematode Parasite of an Insect, pp. 614-615

R. W. Glaser

The Potato Rugose Mosaic Complex, p. 615

Karl Koch

Michelson and Rowland, p. 615

Edwin H. Hall

Consultant Service at the Library of Congress, pp. 615-616

H. W. Tyler

Kopernik, p. 616

St. Michalski

Erroneous Citations, pp. 616-617

C. W. Ackerson

Scientific Apparatus and Laboratory Methods

A Simple Device for Humidity Regulation, pp. 617-618

George E. R. Hervey; James G. Horsfall

Special Articles

The Leakage of Helium through Pyrex Glass at Room Temperature, II, p. 618

G. P. Baxter; H. W. Starkweather

Increasing the Vitamin D Potency of Cow's Milk by the Daily Feeding of Irradiated Yeast Or Irradiated Ergosterol, pp. 618-620

Byron H. Thomas; Florence L. MacLeod

The Preparation of Adrenal Extract, p. 620

Frank A. Hartman; K. A. Brownell

The Life History of Babesia Bigemina in the North American Fever Tick, pp. 620-621

Emery Westervelt Dennis

Calcium Arsenate and Unproductiveness in Certain Soils, p. 622

W. B. Albert; W. R. Paden

Books Received, p. 622
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1900, May 29, 1931
Next Issue: New Series, Vol. 73, No. 1902, Jun. 12, 1931

Science, New Series, Vol. 73, No. 1902, Jun. 12, 1931

Previous Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931
Next Issue: New Series, Vol. 73, No. 1903, Jun. 19, 1931

Front Matter (4 pp.)
Qualifications of a Research Physicist, pp. 623-627

Albert W. Hull

The Progress of Roentgenology and Its Contribution to Medical Science, pp. 627-632

Preston M. Hickey

Obituary

Matthew Fontaine Maury, pp. 632-634

S. A. Mitchell

Memorials, p. 634

Recent Deaths, p. 634

Scientific Events

Reconstruction of the Royal Institution, pp. 634-635

The International Congress for Studies Regarding Population, p. 635

Range Research Conference at Ephraim, Utah, pp. 635-636

The American Institute of Physics, p. 636

Honorary Degrees Conferred by Columbia University, pp. 636-637

Scientific Notes and News, pp. 637-639

Discussion

The Accuracy of Wireless Time Signals, p. 640

Charles H. Smiley

Recent Climate and Vegetation a Factor in the Mound-Building Cultures?, pp. 640-641

Paul B. Sears

Tyndall Beam Intensity of Turbid Colored Solutions, p. 641

Louis Sattler; F. W. Zerban

The Curvature of Space, pp. 641-642

Jermain G. Porter

Conical Snowflakes, p. 642

A. D. Moore

The Labrador Current and Icebergs, p. 642

Irénée Du Pont

The Immediate Problem for Biological Abstracts, pp. 642-643

W. C. Curtis; F. E. Denny; A. L. Quaintance; I. W. Bailey; C. W. Greene; A. F. Woods

Reports

Committee on Effects of Radiation upon Organisms of the National Research Council, pp. 643-645

W. C. Curtis

Societies and Academies, pp. 645-647

Special Articles

A Cytological Map of the X-Chromo-Some of Drosophila Melano-Gaster, pp. 647-648

T. S. Painter

The Structure of Protoplasm, pp. 648-649

William Seifriz

On a Possible Effect of Fungicides upon the Composition of Apples, pp. 649-650

W. A. DeLong; A. D. Pickett

Differentiation of Viruses Causing Green and Yellow Mosaics of Wheat, pp. 650-651

H. H. McKinney

Dissolved Phosphorus and Inorganic Nitrogen in the Water of the Mississippi River, p. 652

A. H. Wiebe

Books Received, p. 652
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931
Next Issue: New Series, Vol. 73, No. 1903, Jun. 19, 1931

Science, New Series, Vol. 73, No. 1903, Jun. 19, 1931

Previous Issue: New Series, Vol. 73, No. 1902, Jun. 12, 1931
Next Issue: New Series, Vol. 73, No. 1904, Jun. 26, 1931

Front Matter (4 pp.)
The Uncertainty Principle, pp. 653-660

Charles Galton Darwin

Serial Literature Used by American Geologists, pp. 660-664

P. L. K. Gross; A. O. Woodford

Obituary

Memorials, p. 664

Recent Deaths, pp. 664-665

Scientific Events

Botanical Research Stations in Africa, p. 665

The Reforestation Program, pp. 665-666

The Guatemala Expedition, p. 666

Appropriations for Grants-In-Aid by the National Research Council, pp. 666-667

Vernon Kellogg

Scientific Notes and News, pp. 667-671

Discussion

New Ostracoderms from Oesel, pp. 671-673

William Patten

The Occurrence of Old Meadow Sod under the New Jersey Beaches, pp. 673-674

Horace G. Richards

Twisted Trunks of Apple Trees, p. 674

Bertram T. Butler

Early Utilitarian Application of Twist in Trees, pp. 674-675

Llewellyn N. Edwards

Panaman, p. 675

Carleton R. Ball

Cure for Formalin Poisoning, p. 675

Vesta Holt

Barro Colorado Island Biological Station, pp. 675-676

W. C. Curtis

Quotations

The Capper Award, pp. 676-677

Societies and Academies, pp. 677-678

Scientific Apparatus and Laboratory Methods

A Transparent Elastic Glue, Used in Making Chambers for Insertion in the Rabbit's Ear, pp. 678-679

B. B. Varian

Cellophane Covers for Petri Dishes for Keeping out Contaminations and Studying the Effects of Ultra-Violet Light, pp. 679-680

Frank H. Johnson

Special Articles

The Effects of Breed on Growth of the Embryo in Fowls and Rabbits, pp. 680-681

W. E. Castle; P. W. Gregory

The Effect of Diet on Hookworm Infestation in Dogs, pp. 681-683

A. O. Foster; W. W. Cort

Further Studies on the Adrenal Cortical Hormone, pp. 683-684

G. A. Harrop; J. J. Pfiffner; A. Weinstein; W. W. Swingle

Books Received, p. 684
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1902, Jun. 12, 1931
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Science, New Series, Vol. 73, No. 1904, Jun. 26, 1931

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Next Issue: New Series, Vol. 74, No. 1905, Jul. 3, 1931

Front Matter (4 pp.)
The Functional Activity of Single Units in the Central Nervous System, pp. 685-692

J. F. Fulton

A Recent Drift in Biological Thought, pp. 692-694

Wm. A. Kepner

Scientific Events

The British Non-Ferrous Metals Research Association, p. 694

Research Reserves in the National Parks, pp. 694-695

Summer Work of Members of the Division of Geology of Harvard University, p. 695

The Dedication of Lakeside Hospital at Western Reserve University, pp. 695-696

British Birthday Honors, p. 696

Scientific Notes and News, pp. 696-700

Discussion

Evolution a Detail in the Dynamics of Populations, pp. 700-702

W. H. Longley

Necessity of Organic Matter for the Maintenance of an Available Supply of Phosphorus in the Soil, pp. 702-703

A. H. Meyer

Insects as Pollen Carriers, p. 703

L. R. Waldron

Awards for Scientific Research by the Congress, pp. 703-704

Fred R. Jelliff

New Technical Words, p. 704

W. A. Dayton

Reports

Twelfth Annual Meeting of the American Geophysical Union, pp. 705-707

Jno. A. Fleming

Scientific Apparatus and Laboratory Methods

A Simple Automatic Pressure Regulator for Filtration, pp. 707-709

Einar Leifson

Inexpensive Aerated Aquaria, p. 709

J. Henry Walker

Differential Filtration as a Means of Isolating Bacterium granulosis, pp. 709-710

Ralph E. Knutti; Peter K. Olitsky; Joseph R. Tyler

Special Articles

A Ration for the Production of Rickets in Chicks, pp. 710-711

E. B. Hart; O. L. Kline; J. A. Keenan

An Investigation of "Insight" in Rats, pp. 711-712

H. C. Gilhousen

Books Received, p. 712
Science News, pp. 10a+12a+14a

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Next Issue: New Series, Vol. 74, No. 1905, Jul. 3, 1931

Science, New Series, Vol. 74, No. 1905, Jul. 3, 1931

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Next Issue: New Series, Vol. 74, No. 1906, Jul. 10, 1931

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

The American Association for the Advancement of Science

Race and Progress, pp. 1-8

Franz Boas

Obituary

Samuel Wilson Parr, pp. 8-9

Roger Adams

Memorials, p. 9

Recent Deaths, p. 9

Scientific Events

Isle Royale National Park, p. 9

Officers of the American Institute of Electrical Engineers, pp. 9-10

Award of the Prizes of the Research Corporation, p. 10

The Harvard Department of Physics, pp. 10-11

Honorary Degrees for Scientific Men, p. 11

Scientific Notes and News, pp. 11-15

Discussion

The Position of Science in Soviet Russia, pp. 15-16

H. M. Dadourian

Hormones in Cancer, p. 16

Fritz Bischoff; L. C. Maxwell; H. J. Ullmann

Hemophilia, pp. 16-17

Carroll La Fleur Birch

Glauconite in Fossil Foraminiferal Shells, p. 17

A. L. Dryden

Scientific Books

----------------, pp. 18-19

Opticks or a Treatise of the Reflections, Refractions, Inflections and Colours of Light

Isaac Newton

Review author[s]: W. F. Magie

Scientific Apparatus and Laboratory Methods

An Electrical Drop Counter, pp. 19-20

Seward E. Owen

Paper Apron to Prevent Curling of Microtome Sections, p. 20

F. A. Varrelman

Special Articles

The Agglutinating Action of Agar on Bacteria, p. 21

Theobald Smith

Intelligence and Body Chemistry, pp. 21-22

Gilbert J. Rich

Books Received, p. 22
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 73, No. 1904, Jun. 26, 1931
Next Issue: New Series, Vol. 74, No. 1906, Jul. 10, 1931

Science, New Series, Vol. 74, No. 1906, Jul. 10, 1931

Previous Issue: New Series, Vol. 74, No. 1905, Jul. 3, 1931
Next Issue: New Series, Vol. 74, No. 1907, Jul. 17, 1931

Front Matter (10 pp.)
The Revolt of the Biochemists, pp. 23-27

P. A. Levene

Clinical Investigation, pp. 27-29

Francis G. Blake

Obituary

Professor Solon I. Bailey, pp. 29-30

Harlow Shapley

Recent Deaths, p. 30

Scientific Events

The British National Physical Laboratory, pp. 30-31

The Post-Graduate Medical School and Hospital and Columbia University, pp. 31-32

Dr. Swasey's Gift to the Engineering Foundation, p. 32

The Centenary of the Harveian Society of London, pp. 32-33

Scientific Notes and News, pp. 33-37

Discussion

Crystalline Amylase, p. 37

M. L. Caldwell; L. E. Booher; H. C. Sherman

Psychic Analogues of Allergy, pp. 37-39

Henry Sewall

Leaf Diagnosis and the Interpretation of Fertilizer Requirements of Plants, pp. 39-41

A. E. Murneek; E. J. Gildehaus

The Mechanism of Crossing-Over, pp. 41-42

Karl Sax

The Divining Rod and Fakers, pp. 42-43

Warren K. Moorehead

The Visit of Dr. Jakob E. Lange, p. 43

H. M. Fitzpatrick

Reports

United States Geological Survey Unpublished Lithographic Plates of Vertebrate Fossils for Distribution, pp. 43-44

Henry Fairfield Osborn

Scientific Apparatus and Laboratory Methods

A Simple Ultra-Centrifuge, pp. 44-46

J. W. Beams; A. J. Weed

A Method for Comparing Growth Rates by means of a Protractor, pp. 46-47

E. M. Harvey

Special Articles

On Molecular Organization in Ameban Protoplasm, pp. 47-51

A. A. Schaeffer

Cercosporella Herpotrichoides Fron, the Cause of the Columbia Basin Footrot of Winter Wheat, pp. 51-53

Roderick Sprague

The Sex Ratio among Human Still-Births, pp. 53-54

William Walter Greulich

Books Received, p. 54
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1905, Jul. 3, 1931
Next Issue: New Series, Vol. 74, No. 1907, Jul. 17, 1931

Science, New Series, Vol. 74, No. 1907, Jul. 17, 1931

Previous Issue: New Series, Vol. 74, No. 1906, Jul. 10, 1931
Next Issue: New Series, Vol. 74, No. 1908, Jul. 24, 1931

Front Matter (10 pp.)
Cancer Research and the Scientific Method, pp. 55-60

Ellice McDonald

Dr. Hillebrand as I Knew Him, pp. 60-62

E. T. Allen

Obituary

Memorials, p. 62

Recent Deaths, p. 62

Scientific Events

The Albert National Park in the Congo, p. 63

The Hygienic Exposition in Dresden, p. 63

Research Program of the Illinois State Geological Survey, pp. 63-64

The Buffalo Meeting of the American Chemical Society, pp. 64-65

In Honor of John R. Freeman, p. 65

Scientific Notes and News, pp. 66-69

Discussion

The Decline in the Average Length of Life, p. 69

Timothy Leary

New Paleontologic Evidence on the Age of the Metamorphic Series of Northeastern Washington, p. 70

C. C. Branson

The Basal-Metabolic Rates of Vegetarians, pp. 70-71

Glen Wakeham; Louis A. Hansen

Reaction of the Contents of Trichinella spiralis cysts, p. 71

W. P. N. Canavan

Sex in the Louisiana Oyster, Ostrea virginica, pp. 71-72

M. D. Burkenroad

Correction on Psyllid-Yellows, p. 72

A. M. Binkley

Scientific Books

----------------, pp. 72-73

Plant Life through the Ages. A Geological and Botanical Retrospect

A. C. Seward

Review author[s]: Edward W. Berry

Scientific Apparatus and Laboratory Methods

An Inexpensive Light Source for a Portable Microscope, pp. 73-74

Harold D. Caylor; Truman E. Caylor

Apparatus for Rapid Drying of Solutions, pp. 74-75

Warren W. Ewing

Special Articles

Thermoelectromotive Forces Produced by a Magnetic Field, pp. 75-77

S. R. Williams

The Production of Dental Caries in Rats Fed an Adequate Diet, pp. 77-78

C. A. Hoppert; P. A. Webber; T. L. Canniff

The Effect of Epinephrin-Free Suprarenal Extract on the Specific Dynamic Action of Foodstuffs, p. 78

Alfred E. Koehler

Books Received, p. 78
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1906, Jul. 10, 1931
Next Issue: New Series, Vol. 74, No. 1908, Jul. 24, 1931

Science, New Series, Vol. 74, No. 1908, Jul. 24, 1931

Previous Issue: New Series, Vol. 74, No. 1907, Jul. 17, 1931
Next Issue: New Series, Vol. 74, No. 1909, Special Issue Containing Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Dr. Charles F. Roos, Permanent Secretary, Jul. 31, 1931

Front Matter (10 pp.)
The Metals in Electrochemistry, pp. 79-82

Louis Kahlenberg

Some Remarks on Mathematical Statistics, pp. 82-86

H. L. Rietz

Obituary

Stephen Moulton Babcock, pp. 86-87

H. L. Russell

Address Given at the Funeral Services in Memory of Stephen Moulton Babcock, pp. 87-88

Glenn Frank

Recent Deaths, p. 88

Scientific Events

The Royal Botanic Society, pp. 88-89

Expenditures of the U. S. Public Health Service, p. 89

Research Foundation of the University of Wisconsin, pp. 89-90

The Lamme Medal, p. 90

Summer Work of the Botanists of Harvard University, pp. 90-91

Scientific Notes and News, pp. 91-94

Discussion

The Basic Sciences at the Chicago Centennial Exposition, 1933, pp. 94-95

John Stephen Sewell

The Work of Chinese Botanists on the Flora of China, p. 95

E. D. Merrill

Exponents and Footnotes, pp. 95-96

F. B. Sumner

Color, p. 96

W. A. Noyes

Special Correspondence

Grants-In-Aid of the National Research Council, pp. 96-97

Vernon Kellogg

Societies and Meetings

The Texas Academy of Science, pp. 97-98

H. B. Parks

The New Hampshire Academy of Science, p. 98

Geo. W. White

Scientific Apparatus and Laboratory Methods

A Simple Grinder for Soft Tissues, pp. 98-99

Carl TenBroeck

A Simple Apparatus for Washing Protozoa, pp. 99-100

John P. Turner

Special Articles

X-Radiation and Regeneration in Amblystoma, pp. 100-101

Elmer G. Butler

Effects on the Gonads of Cortico-Adrenal Extract, pp. 101-102

E. L. Corey; S. W. Britton

Antiurease, p. 102

James B. Sumner; J. Stanley Kirk

Books Received, p. 102
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1907, Jul. 17, 1931
Next Issue: New Series, Vol. 74, No. 1909, Special Issue Containing Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Dr. Charles F. Roos, Permanent Secretary, Jul. 31, 1931

Science, New Series, Vol. 74, No. 1909, Special Issue Containing Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Dr. Charles F. Roos, Permanent Secretary, Jul. 31, 1931

Previous Issue: New Series, Vol. 74, No. 1908, Jul. 24, 1931
Next Issue: New Series, Vol. 74, No. 1910, Aug. 7, 1931

Front Matter (8 pp.)
The American Association for the Advancement of Science: General Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies, pp. 103-123

Obituary

Edward Hart, 1854-1931, pp. 123-124

Eugene C. Bingham

Shibasaburo Kitasato, pp. 124-125

Mikinosuke Miyajima

Recent Deaths, p. 125

Scientific Events

The British National Collection of Type Cultures, p. 126

The New Observatory of the University of Kentucky, p. 126

Summer Session of Teachers of Chemical Engineering, pp. 126-127

The Schenectady Meeting of the American Physical Society, p. 127

The Filterability of Bacteria, pp. 127-128

Scientific Notes and News, p. 128
Science News, pp. 10a-12a

Previous Issue: New Series, Vol. 74, No. 1908, Jul. 24, 1931
Next Issue: New Series, Vol. 74, No. 1910, Aug. 7, 1931

Science, New Series, Vol. 74, No. 1910, Aug. 7, 1931

Previous Issue: New Series, Vol. 74, No. 1909, Special Issue Containing Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Dr. Charles F. Roos, Permanent Secretary, Jul. 31, 1931
Next Issue: New Series, Vol. 74, No. 1911, Aug. 14, 1931

Front Matter (8 pp.)
Observations upon the Filterability of Bacteria, Including a Filterable Organism Obtained from Cases of Influenza, pp. 129-139

Arthur Isaac Kendall

Arrest of Geologic, Archeologic and Paleontologic Work in Central Asia, pp. 139-142

Henry Fairfield Osborn

Obituary

Aldred Scott Warthin, pp. 142-143

Peyton Rous

Memorials, p. 143

Recent Deaths, pp. 143-144

Scientific Events

The Jubilee Meeting of the British Society of Chemical Industry, p. 144

The Buckston Browne Surgical Research Farm, pp. 144-145

The Sixth International Congress of Genetics, pp. 145-146

Scientific Notes and News, pp. 146-150

Discussion

Reduction of Oxyluciferin by Atomic Hydrogen, p. 150

E. Newton Harvey; G. I. Lavin

``The Possible Rôle of Micro-Organisms in the Precipitation of Calcium Carbonate in Tropical Seas'', pp. 150-151

Chas. B. Lipman

Inherited Taste Deficiency, pp. 151-152

L. H. Snyder

Getting the Student to Use His Own Intellect, pp. 152-153

M. Louise Nichols

Positive Gas Pressure in Poplar, p. 153

Frank C. Gates

Societies and Academies, pp. 153-154

Scientific Apparatus and Laboratory Methods

Ruthenium Tetroxide as a Fixative in Cytology, pp. 154-155

D. C. Carpenter; B. R. Nebel

A Method for Locating the Larvae of the Mosquito Mansonia, p. 155

T. E. McNeel

Special Articles

On Atmospheric Electricity, pp. 155-157

C. S. Dorchester; L. W. Butler

Use of Protozoa in Measuring the Neutralizing Value of Cobra Anti-Serum, pp. 157-158

Charles H. Philpott

Books Received, p. 158
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1909, Special Issue Containing Reports of the First Pasadena Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Dr. Charles F. Roos, Permanent Secretary, Jul. 31, 1931
Next Issue: New Series, Vol. 74, No. 1911, Aug. 14, 1931

Science, New Series, Vol. 74, No. 1911, Aug. 14, 1931

Previous Issue: New Series, Vol. 74, No. 1910, Aug. 7, 1931
Next Issue: New Series, Vol. 74, No. 1912, Aug. 21, 1931

Front Matter (9 pp.)
The Internal Secretions and Human Well-Being, pp. 159-166

M. F. Guyer

Scientific Events

Drought in the Nesting Areas of Waterfowl of the United States and Canada, p. 166

The International Passamaquoddy Fisheries Commission, pp. 166-167

The Faraday Celebration, pp. 167-168

The Joseph Henry Lectureship of the Philosophical Society of Washington, p. 168

H. L. Curtis; L. V. Judson

Scientific Notes and News, pp. 168-172

Discussion

The Uncertainty Principle and Free Will, p. 172

Arthur H. Compton

Geomorphic Nomenclature, pp. 172-173

F. Bascom

Lord Kelvin's "Mortal Spring", pp. 173-174

Evan Thomas

On "The New Cytology", pp. 174-175

Jean Oliver

Chromosomes of Petunia, p. 175

Alice M. Ottley

Newton's Saying, p. 175

Charles Herrman

Societies and Academies, pp. 175-179

Scientific Apparatus and Laboratory Methods

A Triple-Spectrum Discharge Tube, p. 179

R. William Shaw; George B. Sabine

The Adjustable Double Slit, pp. 179-180

Paul Kirkpatrick

Special Articles

Further Observations on an Inhibitor Principle Associated with the Causative Agent of a Chicken Tumor, pp. 180-181

James B. Murphy; Ernest Sturm

Human Serum, Age and Multiplication of Homologous Fibroblasts, pp. 181-182

Raymond C. Parker

A Practical Test for Potency of Extract of Corpora Lutea, p. 182

Reginald G. Harris; Dorothy M. Newman

Books Received, p. 182
Science News, pp. 10a+11a+13a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 74, No. 1910, Aug. 7, 1931
Next Issue: New Series, Vol. 74, No. 1912, Aug. 21, 1931

Science, New Series, Vol. 74, No. 1912, Aug. 21, 1931

Previous Issue: New Series, Vol. 74, No. 1911, Aug. 14, 1931
Next Issue: New Series, Vol. 74, No. 1913, Aug. 28, 1931

Front Matter (6 pp.)
The Function of Research in Engineering Education, pp. 183-187

Dugald C. Jackson

The Unsolved Riddle of the Solar System, pp. 187-195

Carr V. Van Anda

Obituary

Russell A. Oakley, p. 195

H. N. Vinall

Memorials, pp. 195-196

Recent Deaths, p. 196

Scientific Events

Mediums for the Isolation and Cultivation of Bacteria in the Filterable State, pp. 196-197

The London School of Hygiene and Tropical Medicine, p. 197

The Return of "The Discovery", p. 197

Additions to the Herbarium of the U. S. National Museum, p. 198

Scientific Notes and News, pp. 198-201

Discussion

The Summer Meeting of the American Association for the Advancement of Science in 1933, pp. 201-202

John Stephen Sewell

The Marine Laboratory of the University of Sydney, Australia, p. 202

T. Wayland Vaughan

Developing New Varieties of Hops, pp. 202-203

E. N. Bressman

Polyembryony in Red Spruce, p. 203

Henry I. Baldwin; Warren E. Percival

Abbreviations for Scientific and Engineering Terms, pp. 203-204

E. H. McClelland

Scientific Apparatus and Laboratory Methods

The Microphone Amplifier, p. 204

R. C. Colwell; L. Fullmer

The Use of a Hot Cathode Helium Lamp as a Source of Monochromatic Light for the Polariscope, pp. 204-205

Alexandre Rothen

Special Articles

Action Currents in the Auditory Tracts of the Midbrain of the Cat, pp. 205-206

H. Davis; L. J. Saul

The Effect of Hypophysectomy on Gestation in the Rat, p. 206

R. I. Pencharz; J. A. Long

Books Received, p. 206
Science News, pp. 10a-12a

Previous Issue: New Series, Vol. 74, No. 1911, Aug. 14, 1931
Next Issue: New Series, Vol. 74, No. 1913, Aug. 28, 1931

Science, New Series, Vol. 74, No. 1913, Aug. 28, 1931

Previous Issue: New Series, Vol. 74, No. 1912, Aug. 21, 1931
Next Issue: New Series, Vol. 74, No. 1914, Sep. 4, 1931

Front Matter (8 pp.)
The Harvard Program of Galactic Explorations, pp. 207-212

Harlow Shapley

Obituary

Frank Wigglesworth Clarke, pp. 212-213

L. M. Dennis

Memorials, p. 213

Recent Deaths, p. 213

Scientific Events

Dissolution of the Royal Botanic Society, pp. 213-214

Opportunities for Employment of Engineering Graduates, pp. 214-215

The New York State Geological Association, p. 215

Symposium of the American Chemical Society, pp. 215-216

Scientific Notes and News, pp. 216-219

Discussion

Why the Angiosperms are Old, pp. 219-221

G. R. Wieland

The Occurrence of Phylloerythrin in the Digestive System of Herbivorous Animals, p. 221

O. L. Inman; Paul Rothemund

Fresh Water Medusae in Oklahoma, p. 222

A. I. Ortenburger; George R. Phillips

The "Fire Stopper", pp. 222-223

Ferdinand W. Haasis

Special Correspondence

International Physiological Congress Fund Fellowships, p. 223

Howard B. Lewis

Scientific Apparatus and Laboratory Methods

A Simplified Instrumental Method of Measuring Sound Absorption Coefficients, pp. 224-225

James F. Mackell

A New Dehydrating Agent for Histological Technique, p. 225

O. C. Bradbury

Special Articles

On the Relative Sterility of the Adolescent Organism, pp. 226-227

Carl G. Hartman

The Etiology of Epizootic Encephalomyelitis of Horses in the San Joaquin Valley, 1930, pp. 227-228

K. F. Meyer; C. M. Haring; B. Howitt

Books Received, p. 228
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1912, Aug. 21, 1931
Next Issue: New Series, Vol. 74, No. 1914, Sep. 4, 1931

Science, New Series, Vol. 74, No. 1914, Sep. 4, 1931

Previous Issue: New Series, Vol. 74, No. 1913, Aug. 28, 1931
Next Issue: New Series, Vol. 74, No. 1915, Sep. 11, 1931

Front Matter (8 pp.)
The Matamek Conference on Biological Cycles, 1931, pp. 229-235

Ellsworth Huntington

Obituary

Calvin Henry Kauffman, p. 235

E. B. Mains

Memorials, p. 236

Recent Deaths, p. 236

Scientific Events

The Meeting of the British Association, pp. 236-237

The International Convention of the Electrochemical Society, p. 237

The Award of the Prize of the Research Corporation, pp. 237-238

The Proposed Surgical Building for Yale University, pp. 238-239

Therapeutic Trials Committee of the British Medical Research Council, p. 239

Scientific Notes and News, pp. 239-243

Discussion

The "Rickettsiae" and the Intracellular "Symbionts", p. 243

R. W. Glaser

The Cause of Mottled Enamel, p. 244

Margaret Cammack Smith; Edith M. Lantz; H. V. Smith

Relic of an Early Aerial Post, pp. 244-245

S. R. Williams

Scientific Apparatus and Laboratory Methods

The Abdominal Window, pp. 245-247

Walter L. Mendenhall

A Method for Ripening Haematoxylin Solutions Rapidly, p. 247

E. J. Kohl; C. M. James

Special Articles

Sexual Rhythm in the California Oyster (Ostrea lurida), pp. 247-249

Wesley R. Coe

Rice Bran, a Preventive of Perosis (Deforming Leg Weakness) in Chickens, pp. 249-250

Harry W. Titus; W. M. Ginn

The Formation of Glycine from Serine, p. 250

Ben H. Nicolet

Books Received, p. 250
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1913, Aug. 28, 1931
Next Issue: New Series, Vol. 74, No. 1915, Sep. 11, 1931

Science, New Series, Vol. 74, No. 1915, Sep. 11, 1931

Previous Issue: New Series, Vol. 74, No. 1914, Sep. 4, 1931
Next Issue: New Series, Vol. 74, No. 1916, Sep. 18, 1931

Front Matter (8 pp.)
Poliomyelitis (Infantile Paralysis), pp. 251-254

Simon Flexner

Genetics and Evolution, pp. 254-260

Maurice Caullery

Scientific Events

The International Conference on Bituminous Coal, p. 260

Paintings of Prehistoric Life at the Field Museum of Natural History, pp. 260-261

County Health Departments, pp. 261-262

The Beit Memorial Fellowships for Medical Research, p. 262

Scientific Notes and News, pp. 262-265

Discussion

Submerged Peat Beds among the Apostle Islands, pp. 265-267

Frank Bursley Taylor

North American Phyllopods, pp. 267-268

Edwin P. Creaser

Scientific Apparatus and Laboratory Methods

A Technique for Fixing and Removing Chick Blastodiscs and Embryos from the Egg Shell, p. 268

Mark M. Keith

A Heating-Humidifying Device for Incubators, p. 269

George Wishart; A. B. Baird

Special Articles

Combination of Bacterial Polysaccharides and Collodion Particles as Antigens, pp. 270-271

José Zozaya

Lignin as a Nutrient for the Cultivated Mushroom, Agaricus campestris, pp. 271-272

Selman A. Waksman; W. Nissen

Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1914, Sep. 4, 1931
Next Issue: New Series, Vol. 74, No. 1916, Sep. 18, 1931

Science, New Series, Vol. 74, No. 1916, Sep. 18, 1931

Previous Issue: New Series, Vol. 74, No. 1915, Sep. 11, 1931
Next Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931

Front Matter (9 pp.)
Plant Sciences in the Sheffield Scientific School, pp. 273-276

Russell H. Chittenden

The Need of Cooperation in Biochemical Research, pp. 276-279

Treat B. Johnson

Industrial Science--A Gilt Edge Security, pp. 279-282

Maurice Holland

Obituary

Memorials, p. 282

Recent Deaths, p. 282

Scientific Events

The American Celebration of the Anniversary of the Inventions of Michael Faraday and Joseph Henry, pp. 282-283

The Annual Meeting of the Optical Society of America, p. 283

The Museum of Anthropology of the University of California, pp. 283-284

The One Hundredth Anniversary of the Leeds School of Medicine, pp. 284-285

Scientific Notes and News, pp. 285-288

Discussion

The Control of Predatory Mammals, pp. 288-290

H. E. Anthony

Fitting the Curve of the Diminishing Increment to Feed Consumption-Live Weight Growth Curves, pp. 290-291

Walter A. Hendricks

The Effect of the Application of a Field of Attraction to a Gas, p. 291

R. D. Kleeman

Scientific Apparatus and Laboratory Methods

The Iowa Eye-Movement Camera, pp. 291-294

Herbert H. Jasper; Robert Y. Walker

Special Articles

The Great Glacial Cycle, pp. 294-295

Wm. T. M. Forbes

Eggs of Fresh-Water Fishes Suitable for Physiological Research, pp. 295-296

Floyd J. Brinley; Charles W. Creaser

Books Received, p. 296
Science News, pp. 10a+12a+13a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 74, No. 1915, Sep. 11, 1931
Next Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931

Science, New Series, Vol. 74, No. 1917, Sep. 25, 1931

Previous Issue: New Series, Vol. 74, No. 1916, Sep. 18, 1931
Next Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931

Front Matter (6 pp.)

British Association for the Advancement of Science

The Scientific World-Picture of To-Day, pp. 297-305

J. C. Smuts

Scientific Events

The National Metal Congress, pp. 305-306

Clinical Congress of the Connecticut State Medical Society, pp. 306-307

The British Industrial Health Research Board, p. 307

Scientific Notes and News, pp. 307-311

Discussion

Expulsion of Gas and Liquids from Tree Trunks, pp. 311-312

Ferdinand W. Haasis

Catfish Feeding on the Eggs of the Horseshoe Crab, Limulus polyphemus, p. 312

Louise Merrimon Perry

The Lack of Correlation between Anemia and the Pellagra-Like Symptoms in Rats, pp. 312-313

Nellie Halliday

Scientific Apparatus and Laboratory Methods

A Light Filter for Microscopes, pp. 313-314

C. E. Tharaldsen

Special Articles

Control of Powdery Mildew and Red Spider on Greenhouse Cucumbers, pp. 314-315

L. J. Alexander; H. C. Young

Phagocytosis of Brucella, an Index of Immunity to Undulant Fever in Man, pp. 315-316

I. Forest Huddleson; Howard W. Johnson

The Effect of Temperature on the Number of Scales in Trout, p. 316

C. McC. Mottley

Books Received, p. 316
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1916, Sep. 18, 1931
Next Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931

Science, New Series, Vol. 74, No. 1918, Oct. 2, 1931

Previous Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931
Next Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931

Front Matter (6 pp.)

British Association for the Advancement of Science

The Growth in Opportunities for Education and Research in Physics during the Past Fifty Years, pp. 317-324

J. J. Thomson

Post-Ehrlich Immunology, pp. 324-327

W. H. Manwaring

Obituary

David Starr Jordan, pp. 327-329

Barton Warren Evermann

Memorials, pp. 329-330

Recent Deaths, p. 330

Scientific Events

The International Illumination Congress, pp. 330-331

Committee Appointments of the American Institute of Electrical Engineers, p. 331

Wild Life in National Forests, pp. 331-332

The New Agricultural Engineering Building at the University of Kentucky, p. 332

The Publication of Newton's Correspondence, pp. 332-333

Scientific Notes and News, pp. 333-337

Discussion

The Megagametophyte of Pinus, pp. 337-338

W. H. Emig

Pauropoda in Alaska, p. 338

William A. Hilton

More about Citations, pp. 338-339

Bernard H. Lane

Vision, and Vascularity of the Eye, pp. 339-340

E. M. Josephson

Scientific Apparatus and Laboratory Methods

Absorption Devices and Methods, pp. 340-341

John W. Williams

Double Plate Method Used for Culturing Tilletia levis, p. 341

E. W. Bodine

Special Articles

Inbreeding in Alfalfa Establishes a High Degree of Homozygosity, pp. 341-343

George Stewart

Non-Acid-Fast Tubercle Bacilli, pp. 343-344

Franklin R. Miller

Books Received, p. 344
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931
Next Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931

Science, New Series, Vol. 74, No. 1919, Oct. 9, 1931

Previous Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931
Next Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931

Front Matter (6 pp.)

The British Association for the Advancement of Science

A Hundred Years of Evolution, pp. 345-360

E. B. Poulton

Scientific Events

The International Geological Expedition, p. 360

Industrial Research in the Nation's Industries, p. 361

The New Engineering Building at the University of Wisconsin, pp. 361-362

The Canal Zone Experiment Gardens, p. 362

The National Arboretum, p. 362

Scientific Notes and News, pp. 363-366

Discussion

A New Mathematical Review, pp. 366-367

G. A. Miller

On the Improvement of the Dictionary, pp. 367-368

Nelson W. Taylor

Terraces in the Connecticut Valley, pp. 368-369

Richard Foster Flint

Scientific Apparatus and Laboratory Methods

A Modification of the Osbornemendel Salt Mixture, p. 369

Philip B. Hawk; Bernard L. Oser

A Stain for Fibrin, Gram Positive Bacteria and Basal Bodies in Tissues, pp. 369-370

Helene Mynchenberg Wallace

Special Articles

An Ovo-Testis in the Yellow Perch (Perca flavescens), pp. 370-371

C. L. Turner

The Cultivation of Vaccine and Other Viruses in the Chorio-Allantoic Membrane of Chick Embryos, pp. 371-372

E. W. Goodpasture; Alice M. Woodruff; G. J. Buddingh

Books Received, p. 372
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931
Next Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931

Science, New Series, Vol. 74, No. 1920, Oct. 16, 1931

Previous Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931
Next Issue: New Series, Vol. 74, No. 1921, Oct. 23, 1931

Front Matter (9 pp.)
The Art of Medicine, pp. 373-380

David Riesman

Obituary

Edward Skinner King, p. 380

Leon Campbell

Memorials, pp. 380-381

Recent Deaths, p. 381

Scientific Events

The Metallurgical Advisory Board, pp. 381-382

The Institute of Paper Chemistry, p. 382

The Five-Year Program of the Kentucky Geological Survey, pp. 382-383

Psychological Expedition to Central Asia, pp. 383-384

Scientific Notes and News, pp. 384-387

Discussion

Bilateral Gynandromorphism and Lateral Hemihypertrophy in Birds, pp. 387-390

Frank R. Lillie

Anguillula aceti--A Desirable Nema for Type Study, pp. 390-391

George Zebrowski

Scientific Apparatus and Laboratory Methods

Some Laboratory Uses for Crown Sealed Milk Bottles, pp. 391-392

J. Howard Brown

A Dilatometer for Measuring the Swelling of Seeds, pp. 392-393

M. A. Raines

Special Articles

Land Types of the Trinity Beds, pp. 393-395

G. R. Wieland

Effect of H-Ion Concentration on the Division Rate of Paramecium aurelia, pp. 395-396

Austin Phelps

Induced Autotomy in Thyone, p. 396

Frank R. Kille

Books Received, p. 396
Science News, pp. 10a+12a+13a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931
Next Issue: New Series, Vol. 74, No. 1921, Oct. 23, 1931

Science, New Series, Vol. 74, No. 1921, Oct. 23, 1931

Previous Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931
Next Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931

Front Matter (6 pp.)
The Next Twenty Years, pp. 397-404

Hans Zinsser

Obituary

Thomas Alva Edison: 1847-1931, pp. 404-405

Scientific Events

Conferences on the Calendar and on Meteorology, pp. 405-406

Techno-Chemical Lectures of the Mellon Institute, p. 406

The American College of Surgeons, pp. 406-407

Gold Medals in Recognition of Work in Yellow Fever, p. 407

Grants of the American Academy of Arts and Sciences, p. 407

Appointments of the Carnegie Institution of Washington, p. 408

Scientific Notes and News, pp. 408-412

Discussion

On a Possible Explanation of the Difference in Wave-Lengths of the Spectral Lines of a Given Element Produced on the Sun and on the Earth, pp. 412-413

Fernando Sanford

Bottom Temperatures in Deep Lakes, p. 413

Stillman Wright

Metabolism of Cystine and Methionine, p. 414

Richard W. Jackson; Richard J. Block

The Transformation of Carotene to Vitamin A in Vitro, p. 414

Harold S. Olcott; Duane C. McCann

Conical Snowflakes, p. 414

Willis W. Wagener

The American Association for the Advancement of Science

The Host Institution and Hotel Headquarters for the New Orleans Meeting, pp. 415-416

Charles F. Roos

Section F (Zoology) at New Orleans, pp. 416-417

Geo. T. Hargitt

Section E (Geology and Geography), p. 417

Kirtley F. Mather

Scientific Apparatus and Laboratory Methods

An Apparatus for Determining the Purity of Limestone in the Field, p. 418

Paul Emerson

A Simple, Quick and Inexpensive Method of Preparing Lantern Slides, p. 418

P. E. Reid

Special Articles

A Natural Copper Deficiency in Cattle Rations, pp. 418-419

W. M. Neal; R. B. Becker; A. L. Shealy

Decrease in Rate of Oxygen Consumption under the Influence of Visible Light on Sarcina lutea, pp. 419-420

B. B. Rubenstein

Books Received, p. 420
Science News, pp. 10a+11a+12a

Previous Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931
Next Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931

Science, New Series, Vol. 74, No. 1922, Oct. 30, 1931

Previous Issue: New Series, Vol. 74, No. 1921, Oct. 23, 1931
Next Issue: New Series, Vol. 74, No. 1923, Nov. 6, 1931

Front Matter (8 pp.)
The South's Contribution to Science, pp. 421-427

Emmett B. Carmichael

Obituary

Samuel Wesley Stratton: 1861-1931, pp. 428-431

F. C. Brown

Recent Deaths, p. 431

Scientific Events

The New Federal Citrus Fruit Laboratory in Texas, p. 431

Psychiatric Education, pp. 431-432

The Ninth International Congress of Pure and Applied Chemistry, p. 432

The Henry Burchard Fine Hall of Mathematics, pp. 432-433

Scientific Notes and News, pp. 433-435

Discussion

Courses on the History of Physics in American Colleges and Universities, pp. 435-437

E. H. Johnson

A New Elm Disease, p. 437

Curtis May

The Gall Bladders of Chicks in a Vitamin D Deficient Condition, pp. 437-438

Walter C. Russell; Donald F. Chichester

A Trematode from the Cloaca of the Gull, p. 438

Hybrid Words, p. 438

G. S. Fraps

Reports

Gravitational and Electromagnetic Fields, pp. 438-439

Scientific Apparatus and Laboratory Methods

Protective Coatings for Mineral and Rock Specimens, pp. 439-440

Robert W. Clark

A Short Method for the Preparation of Animal Tissues for Staining, p. 440

Paul W. Bowman; Mark N. Linch

Special Articles

Further Experiments on Cortico-Adrenal Extract: Its Efficacy by Mouth, pp. 440-441

S. W. Britton; H. Silvette

Varved Clay in Holmes County, Ohio, pp. 441-442

George W. White

Books Received, p. 442
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1921, Oct. 23, 1931
Next Issue: New Series, Vol. 74, No. 1923, Nov. 6, 1931

Science, New Series, Vol. 74, No. 1923, Nov. 6, 1931

Previous Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931
Next Issue: New Series, Vol. 74, No. 1924, Nov. 13, 1931

Front Matter (8 pp.)
A Study in Biokinetics, pp. 443-449

Charles D. Snyder

Obituary

Memorials, pp. 449-450

Recent Deaths, p. 450

Scientific Events

Appropriations for Grants-In-Aid by the National Research Council, pp. 450-451

Vernon Kellogg

The National Advisory Committee for Aeronautics, p. 451

The Dohme Foundation and National Fellowships at the Johns Hopkins University, pp. 451-452

The Lowell Lectures, p. 452

Scientific Notes and News, pp. 452-455

Discussion

A Forgotten Contribution to Nutrition by Magendie, p. 456

Franklin C. Bing

A Proposed Classification of Disease Transmissions by Arthropods, pp. 456-457

Clay G Huff

Glauconite and Foraminiferal Shells, pp. 457-458

Frederick A. Burt

Peat under a Delaware Beach, p. 458

Laetitia M. Snow

Special Correspondence

A Flora of Mexico, pp. 458-459

S. F. Blake

Scientific Apparatus and Laboratory Methods

A New Micromanipulator, p. 460

Ethel McNeil; J. E. Gullberg

A Singing Tube, p. 461

William R. Cole

Pure Smooth and Rough Colony Types at Will, p. 461

Agnes J. Quirk

Special Articles

Heterothallism in Puccinia triticina, pp. 462-463

Ruth F. Allen

The Redia of the Gasterostomes, p. 463

Arthur E. Woodhead

Variations in the Evening Primrose Induced by Radium, pp. 463-464

Wm. H. Brittingham

Books Received, p. 464
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931
Next Issue: New Series, Vol. 74, No. 1924, Nov. 13, 1931

Science, New Series, Vol. 74, No. 1924, Nov. 13, 1931

Previous Issue: New Series, Vol. 74, No. 1923, Nov. 6, 1931
Next Issue: New Series, Vol. 74, No. 1925, Nov. 20, 1931

Front Matter (8 pp.)
The United States Army Medical Department and Its Relation to Public Health, pp. 465-476

Edgar Erskine Hume

Obituary

Richard Alexander Fullerton Penrose, Jr.: December 17, 1863-July 31, 1931, pp. 476-477

Joseph Stanley-Brown

Recent Deaths, p. 478

Scientific Events

The Bermuda Fresh-Water System, p. 478

Topographical Maps, pp. 478-479

The Agricultural Experiment Stations, pp. 479-480

A New Harvard Observatory, p. 480

A Junior Nobel Award, p. 480

Scientific Notes and News, pp. 481-483

Discussion

Concerning an Increase in the Potency of Mosaic Virus in Vitro, pp. 483-484

Peter K. Olitsky; Filip C. Forsbeck

Geomorphological Evidence of a Climatic Boundary, pp. 484-485

Richard Joel Russell

Chlorates as Herbicides, p. 485

W. E. Loomis; Russell Bissey; E. V. Smith

The Causative Organism of a Papular Type of Apple Measles, pp. 485-486

Anthony Berg

Biological Abstracts--A Discussion, pp. 486-487

Paul D. Lamson

Scientific Apparatus and Laboratory Methods

An Adaptation of the Box Camera to Photomicrography, pp. 487-488

Charles S. Apgar

A Method for the Preservation of Old Manuscripts, pp. 488-489

J. P. Sanders; F. K. Cameron

The Use of Live Nemas (Metoncholaimus pristiurus) in Zoological Courses in Schools and Colleges, pp. 489-490

N. A. Cobb

Special Articles

A Chart of Radioactive Elements Indicating Their Structure, pp. 490-492

Ingo W. D. Hackh

The Sugar Tolerance of Yeasts Expressed in Atmospheres, pp. 492-493

Margaret B. Church

More Data on the Lung Fluke, Paragonimus, in North America, pp. 493-494

Donald J. Ameel

Books Received, p. 494
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1923, Nov. 6, 1931
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Science, New Series, Vol. 74, No. 1925, Nov. 20, 1931

Previous Issue: New Series, Vol. 74, No. 1924, Nov. 13, 1931
Next Issue: New Series, Vol. 74, No. 1926, Special Issue Containing the Preliminary Announcement of the Second New Orleans Meeting of the American Association for the Advancement of Science and Associated Societies, December 28, 1931, to January 2, 1932. Edited by Dr. Charles F. Roos, Permanent Secretary, Nov. 27, 1931

Front Matter (8 pp.)
Pure and Applied Science, pp. 495-502

Cecil H. Desch

Schaudinn: A Biographical Appreciation, pp. 502-506

John H. Stokes

Scientific Events

The University of Wisconsin Research Patents, p. 506

The Biological Photographic Association, pp. 506-507

The Tulsa Meeting of the Geological Society of America, p. 507

The Seventh Pan-American Scientific Congress, pp. 507-508

The American Institute of Physics, pp. 508-509

Scientific Notes and News, pp. 509-512

Discussion

Oestrus, pp. 512-513

Stuart L. Tyson

Possible Significance of the Decreased Suspension Stability of the Blood, pp. 513-514

Hobart A. Reimann

Fossils from the Eastern Flank of the Sierra Nevada, California, pp. 514-515

Evans B. Mayo

Naming Disorders of Speech, p. 515

Samuel D. Robbins

A Curious Fish Story, pp. 515-516

C. T. Hurst

American Association for the Advancement of Science

New Orleans Meeting, December 28, 1931-January 2, 1932, pp. 516-519

Charles F. Roos

Scientific Apparatus and Laboratory Methods

A Method of Supplying Students with Natural Endamoeba Histolytica from Cultures, pp. 519-520

J. H. St. John

Photographing Animals, p. 520

Arthur L. Kahn; Geo. H. Hanley

Special Articles

Accelerated Infection in Experimental Poliomyelitis, pp. 520-521

Simon Flexner

The Ring Structure of Adenosine, p. 521

P. A. Levene; R. Stuart Tipson

Alaria Mustelae Sp. Nov., a Trematode Requiring Four Hosts, pp. 521-522

Nelly J. Bosma

The Relation between Iron, Humic Acid and Organic Matter in the Nutrition and Stimulation of Plant Growth, pp. 522-524

Dean Burk; Hans Lineweaver; C. Kenneth Horner; F. E. Allison

Books Received, p. 524
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1924, Nov. 13, 1931
Next Issue: New Series, Vol. 74, No. 1926, Special Issue Containing the Preliminary Announcement of the Second New Orleans Meeting of the American Association for the Advancement of Science and Associated Societies, December 28, 1931, to January 2, 1932. Edited by Dr. Charles F. Roos, Permanent Secretary, Nov. 27, 1931