SCIENCE

NEW SERIES. VOLUME XC

JULY-DECEMBER, 1939

NEW YORKTHE SCIENCE PRESS

1939

THE SCIENCE PRESS PRINTING COMPANYLANCASTER, PENNSYLVANIA

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t,

CONTENTS AND INDEXNEW SERIES. VOL. XC-JULY TO DECEMBER, 1939

THE NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS

ABRAHAMSON, E. M., Blood Serum, 598Academy of Sciences, National, 23, 401, 403; of Arts and

Sciences, 30, 610; of Medicine, New York, 359; of Oph-thalmology and Otolaryngology, 437; of Science, Ala-bama, 111; North Carolina, 212; Indiana, 593; Vir-ginia, 586; Swedish, Royal, 152

ADAMS, R., W. A. Noyes Laboratory of Chemistry, 71Adsorption of Antibodies, A. ROTHEN and K. LAND-

STEINER, 65After-image and Judgment of Size, R. M. SUTTON, 616Air, Population of, T. D. A. COCKERELL, 353; Compressor,

G. J. RALEIGH, 598Alcohol, Research Council on Problems of, 389; Forma-

tion of Bead of, C. F. WINANS, 394Aldol Condensation,IH. FRAENKEL-CONRAT, 114ALLARD, H. A., Vocal Mimicry of the Starling, 370American, Association for the Advancement of Science,

Southwestern Division, V. C. KIECH, 38; MilwaukeeMeeting, F. R. MOULTON, 45; Darwinian Ethics, S. J.HOLMES, 117; Stanford Meeting of the Pacifie Divi-sion, J. M. LUCK, 123; Standards of Living, S. A. RICE,167; Science and Social Pioneering, I. BOWMAN, 309;Grants-in-Aid of Research, 349; Columbus Meeting, F.R. MOULTON, 499; Public Relations of Science, W. C.MITCHELL, 599

Ames, Joseph S., and Committee for Aeronautics, 368AmIS, E. S. and V. K. LAMER, Brom Phenol Blue, 90AMMUNDSEN, E., Hemoglobin in Normal Individuals, 372ANDERSON, B. G., Culture Medium for Paramecia, 448ANDERSON, K., Herpes Virus, 497ANDERSON, T. F. and B. M. DUGGAR, Yeast and Ultra-

Violet Light, 358Anesthesia by Chilling, G. H. PARKER, 63ANSON, M. L., Egg Albumin, 142; Proteins, 256Antibody Production, J. FREUND and M. A. BEHAN, 185APGAR, C. S., JR., Operating Stand, 22Apples, Color in, R. B. DUSTMAN and I. J. DUNCAN, 233Archeology, American, C. E. GUTHE, 528ARNOW, L. E. and J. C. OPSAHL, Adenocareinoma Protein,

257ASCHAM, L., M. SPEIRS and D. MADDOX, Iron in Dried

Peas and Beans, 596ASHLEY-MONTAGU, M F, Conscience of the Past, 180;

Scientific Invention and Social Consciousness, 592Astronomers Association, Amateur, Exhibition, 103ASTRUP, T., Heparin and Blood-clotting, 36Atkinson, Harry Victor, E. H. SHAW, JR., 55Atmospheric Contamination, A. H. PFUND, 326Aurora, Noteworthy, S. S. BERRY, 490Australian National Research Council, 388Authority, Education by, 0. F. CURTIS, 93Awards: of Geographical Society, 11; Milton, 31; Mead

Johnson and Company, "B-Complex," 322; Charles T.Main, James R. Bright, 486; Undergraduate Student,David T. James, 486; Francis Amory Centennial Prize,610

BAKER, R. H., David Todd, 8- BALDWIN, J. T., JR., Chromosomes from Leaves, 240

X BARBOUR, H. G. and F. S. HAMMETT, Longevity, 538BARKAN, G. and 0. SCHALES, Pseudomethemoglobin, 616

-. BARR, C. G., H. W. REUSZER and F. THORP, JR., Chemicalr Composition of Suckleyana, 497BATEMAN, H., Electromagneties, A. O'Rahilly, 300BATSON, 0. V., Human Vascular Preparations, 518BAUGH, R. H., Compound Words, 156Beans, Disease of Snap, W. A. JENKINS, 63

BEARD, J. W., D. BEARD and H. FINKELSTEIN, EquineEncephalomyelitis Virus, 215

BEARDSLEY, N. F., Teachers of Physics, 618BEHRMANN, V. G. and M. FAY, Blood pH, 187BENNETT, A. A., Theoretical Mechanics, C. J. Coe, 111BEQUAERT, J., Burgmeier's Revista de Entomologia, 540BERGER, J. and C. F. ASENJO, Pineapple Juice, 299Beriberi, F. H. LEWY and OTHERS, 141BERRY, S. S., A Noteworthy Aurora, 490BHASKARAN, T. H. and S. C. PILLAI, Fixed Nitrogen and

Crop Production, 595Bio-electric Potentials of Hen's Egg, A. L. ROMANOFF and

C. L. COTTRELL, 471Biological, Laboratory, Fisheries, 11, 265, 365; Abstracts,

293, 559; Survey of New Hampshire, 389; EdmundNiles Huyck Preserve, 534; Societies, American, Unionof, 560; Citric Acid Synthesis, N. HALLMAN and P. E.SIMOLA, 594; Experiments, Radioactivity in, S. GOUD-SMIT, 615

Biology and Education, A. D. MEAD, 241BIRKHOFF, G. D., Theory of Numbers, C. H. Hardy and E.M. Wright, 158

BLOMQUIST, H. L., N. C. Academy of Science, 212Blood, pH, Determination of, V. C. BEHRMANN and M.FAY, 187; Vessels and Liquid Latex, D. L. GAMBLE, 520;Serum, E. M. ABRAHAMSON, 598

Blossom-inducing Stimulus, R. H. ROBERTS and B. E.STRUCKMEYER, 16

BLUMENFELD, C. M., Epidermis of the Albino Rat, 446BOGERT, M. T., Uses of Chemicals, T. C. Gregory, 422;

International Union of Chemistry, 491Bone Marrow, H. N. HOLMES and R. E. CORBET, 518Botanica, Chronica, and the War, R. F. GRIGGS, 418; D. T.MAcDOUGAL, F. E. LLOYD and H. S. REED, 566

Botanical Garden, N. Y., Tropical Flower Garden, 413Botany in Italy, F. RAMALEY, 81BOUSFIELD, W. A., Conditioned Response, 70BOWMAN, I., Science and Social Pioneering, 309BRAGG, W., Medals of the Royal Society, 580BRAMLEY, A. and A. K. BREWER, Gases and Isotopes, 165BRAND, A. R. and P. P. KELLOGG, Hearing of Canaries,

354BRINK, R. A. and D. C. COOPER, Somatoplastic Sterility,

545BRINKHOUS, K. M. and OTHERS, Heparin and Blood Clot-

ting, 539British: Association for the Advancement of Science, 83;Dundee Meeting, 132, 202; A. SEWARD, 189; E. K.RIDEAL, 217; I. BOWMAN, 309; Royal Society, 9, 580;Rothamsted Experimental Station, 56; Neurologic Re-search Institute, 57; Leverhulme Fellowships, 103;Natural History Museum, 131; Non-ferrous Metal Re-search Laboratories, 173; Forests, 200; Societies andthe Community, H. L. HAWKINS, 261; London Univer-sity, 292; Bird Protection, 364; Association in WarTime, 387

BRITTON, S. W. and R. F. KLINE, Deslothing the Sloth, 16BRoH-KAHN, R. H., Sulfanilamide, 543Brom Phenol Blue, E. S. AMIS and V. K. LAMER, 90BROMLEY, S. W., New England Hurricane, 15BROWN, F. C., History of Electricity, D. C. Miller, 234;

Physics, E. G. Richardson, 566; R. M. Sutton, 567BROWN, H. P. and J. A. AUSTIN, Microfilm Records, 573Brown, William Henry, E. D. MERRILL, 531Brucella antiserum, I. F. HUDDLESON and R. B. PENNELL,

571BRUCKNER, J. H. and F. B. HUTT, Linkage in Fowl, 88

[CONTENTS ANDI INDEX

BRUES, C. T., Food, Drink and Evolution, 145BURRELL, R. C. and H. A. MILLER, Vitamin C Content of

Spring Greens, 164

C., J. H., "Stars" in "American Men of Science," 252Cadmium Poisoning, R. H. WILSON and F. DEEDs, 498CALINGAERT, G., Reaction in Organic Chemistry, 430Canadian National Research Council, 468Canaries, Hearing, A. R. BRAND and P. P. KELLOGG, 354Cancer, Congress, International, 151; and the Public

Health, T. PARRAN, JR., 427CANNON, W. B., Physiological Phenomena, J. J. Izquierdo,

516; Chemical Mediation of Nerve Impulse, 521CANTAROW, A., Urine Chloride Concentration, 375Carnegie, Institution of Washington, 586; and Dr. Mer-

riam, W. K. GREGORY, 466; Corporation, Grants, 587Carotene, Determination of, G. KERNOHAN, 623CARPENTER, G. D. H., Entomological Survey, 252CARR, L. G., Plasmodium of Hemitrichia vesparium, 329CARTER, W., Prontosil a Dye for Insects and Plants, 394Chalcedony, Artifacts Made from, L. L. RAY, 372Chemical, Expedition, 103; Imports of the United States,

292; Industries, Exposition, 412; Society, American,Boston Meeting, 58, 132, Officers, 267, 611; CryogenicResearch, 348, Nominations, 414; Composition ofSuckleya Suckleyana, C. G. BARR, H. W. REUSZER andF. THORP, JR., 497; Mediation of Nerve Impulse, W. B.CANNON, 521

Chemistry, Organic, Reaction in, G. CALINGAERT, 430;International Union of, M. T. BOGERT, 491; of Insulin,E. J. COHN and OTHERS, 183

Chemists, Literature Service for, N. E. GORDON, 330Chewing for Relaxation, H. L. HOLLINGWORTH, 385CHILDERS, N. F., D. C. KIPLINGER and H. W. BRODY, Gas

Analysis, 447Chlorazol Fast Pink BKS, R. E. ROSE, 252CHOLODNY, N. G. and A. G. GORBOVSKY, Photosynthesis, 41CHRISTIANSEN, J. B., J. C. HALPIN and E. B. HART,Manganese and Hatchability of Hen's Eggs, 356

Chromosomes, from Leaves, J. T. BALDWIN, JR., 240;Bird and Mammalian, T. S. PAINTER, 307

CHURCH, R., Center of Population, 418Cilia, Shape of the, in Motion, A. M. SHANES, 259Citations, One-man Authority, C. H. MULLER, 207CLARK, G., Horsley-Clarke Instrument and Rat, 92CLAUDE, A., Chicken Tumor I, 213CLAUSEN, R. E., Sixth Pacific Science Congress, 449COCKERELL, T. D. A., Nomenclator Zoologicus, 178; Pop-

ulation of the Air, 353; Publications of British Mu-seum, 395; Henry Clinton Fall, 609

COHN, E. J. and OTHERS, Insulin, 183COKER, R. E., Naples Zoological Station, 206Columbia University, 267, 322COLVIN, J. W. and C. A. MILLS, Infection Resistance,

275Compound Words, S. B. TALMAGE, 155; R. H. BAUGH,

156; 0. RADER, 157; M. FULLER and J. MCMASTERS,157

Conditioned Response, Demonstration, W. A. BOUSPIELD,70

Conscience of the Past, M F ASHLEY-MONTAGU, 180Conservation, Health, 458; Soil, 611COOK, 0. F., A Household Palm, 298COOLIDGE, H. J., JR., Science in Africa, E. B. Worthing-

ton, 180Corn, Glycogen in, D. L. MORRIS and C. T. MORRIS, 238CORRESPONDENT, Museo Poey, of Havana, 490; Fred Wil-liam Tinney, 608

Cortin, Excretion of, P. WEIL and J. S. L. BROWNE, 445Cosmic Rays, Allowed Directions of, I. OPATOWSKI, 463Cowles, Henry Chandler, G. D. FULLER, 363COWLES, R. B., Reptilian Thermal Tolerance, 465Cox, G. J. and OTHERS, Mottled Enamel in Rat Molars,

83CRAFTS, A. S., Solute Transport in Plants, 337CUMMINS, H., Heinrich William Poll, 172

CURTIS, 0. F., Education by Authority, 93CUSHING, H., The Mayo Brothers' Clinic, 225Cushing, Harvey, J. F. FULTON, 443; E. C. CUTLER, 475Cytochrome C, Spectrum, C. H. THEORELL and A. AKES-

SON, 67

DALE, H., Physiology of the Nervous System, 393DALLENBACH, K. M., Margaret Floy Washburn, 555DANIELS, L. B., Potato Disease in Colorado, 273DAVENPORT, C. B., Frederick Adams Woods, 607DAWES, C. L., Arthur Edwin Kennelly, 319DAWSON, R. F., Protein Metabolism, A. C. Chibnall, 330DE GARA, P. F., Agglutination of Pneumococci, 378Densitometer, X-ray, H. E. WEBBER, 115Dental Symbols, B. OETTEKING, 464DEUBER, C. G. and J. L. FARRAR, Norway Spruce, 109Diabetes insipidus, I{. G. SWANN, 67DIEHL, W. W., Endogone as Animal Food, 442"Distinction" in "Science," C. S. GAGER, 209Diving, Oxygen Store in, D. ROBINSoN, 276DODGE, B. O., Genetics of the Fungi, 379DORFMAN, A., S. A. KOSER and F. SAUNDERS, Nicotin-amide and Respiration of Dysentery Bacilli, 544

Dryer, Precipitate, A. LOWMAN, 143DUBLIN, W. B., W. M. BOOTHBY and M. M. D. WILLIAMS,

Velocity of Sound in a Gas, 399Duck Sickness and Selenium, A. C. TWOMEY, S. J. Two-MEY and L. R. WILLIAMS, 572

DURAND, W. F., Robert Henry Thurston, 547DUSTMAN, R. B. and I. J. DUNCAN, Color in Apples, 233Dye, Black, of the Navajos, D. T. O'CoNNELL, 272Dystrophy, N. SHIMOTORI, G. A. EMERSON and H. M.EVANS, 89; Muscular, Nutritional, S. G. MORRIS, 424

EDINGTON, W. E., Academy of Science, Indiana, 593EDWARDS, E. A. and S. Q. DUNTLEY, Skin Pigment, 235Egg Albumin, M. L. ANSON, 142EICHELBERGER, L. and OTHERS, Hemoglobin, 443Electrochemical Society, 58, 202Embryonic Tissue and Parturition in the Rat, A. TAYLOR,472

Encephalomyelitis, Equine, Virus, V. KUBES and F. A.RIoS, 20; J. W. BEARD, D. BEARD and H. FINKEL-STEIN, 315

Endogone as Animal Food, W. W. DIEHL, 442Engineering, Science, R. V. SOUTHWELL, 27; Marine,

226; Degree in, 267; College, 436; Education, 533;R. H. Thurston, Celebration, W. F. DUmAND, 547; Pro-fession, Status of, 609

ENGLISH, J., JR., J. BONNER and A. J. HAAGEN-SMIT,Plant Wound Hormone, 329

Entomologia, Borgmeier's Revista de, J. BEQUAERT, 540Entomological Survey, C. D. H. CARPENTER, 252Esters, Desoxycorticosterone, R. F. LOEB and OTHERS, 496EVANS, H. M. and OTHERS, Pituitary Growth Hormone,

19; Role of Vitamin E in the Prevention of Dystrophyin Guinea Pigs, 89; Action of Ketene on Hormone, 140;Lactogenic Hormone, 376, 622; Vitamin B2, 377

Evolution, Food and Drink and, C. T. BRUES, 145Expedition, Field Museum, 10, 102, 266, 388, 438, 610;

Antarctic, 131, 366; Pacific Islands, 173; Ornitholog-ical, 246; to Canada, 347; Fahnestock, 437; NationalGeographic, 437; Hudson Bay, 458

Exudates, Inflammatory, V. MENKIN, 237

Fall, Henry Clinton, T. D. A. COCKERELL, 609Farrand, Livingston, T. PARRAN, JR., 583FARRIS, E. J. and G. ENGvALL, Exercising Rats, 144Fellowships, Guggenheim, 77; Lalor, 347FELT, E. P., Pasture Insects, H. Osborn, 302FERGUSON, J. H., Heparin and Blood Clotting, 272FERNHOLZ, E. and S. ANSBACHER, Vitamin K, 215Fertilizer, Boron as, W. L. POWERS, 36Field Museum, 10, 102, 266, 388, 438, 610Film Reactions and Biology, E. K. RIDEAL, 217Firefly, "Spinthariscope," R. W. WOOD, 233FISHER, L. W., New England Geologists Conference, 593

iv SCIENCE

NEW SERIES 1VOL. XC J SCIENCE

Fisheries, Gulf Coast Laboratory, 11; Puerto Rico, 265;New Milford, 365; Alaska, Experimental Commission,533; Bureau of, 76, Research Vessel, 227

Fishes, Viviparous Cyprinodont, C. L. TURNER, 42FLANDERS, S. E., Adaptation Insects, 82Flasks, Carrel, H. SHAPIRO, 308FLEXNER, J., M. KNIAZUK and J. NYBOER, Gastric pH in

Situ, 239FORBES, A., Nervous System, J. F. Fulton, 17FORBES, E. B., Physiology of Adult Ruminant, 270Foreign Books and Periodicals, 459FORTUYN, A. B. D., Origin of the Human Races, 352FRAENKEL-CONRAT, H., Aldol Condensation, 114FRAMPTON, V. L., Tobacco Mosaic Virus Protein, 305Franklin and his Times, 484French Association for the Advancement of Science, 254FREUND, J. and M. A. BEHAN, Antibody Production, 185Friction, Nature of, G. W. HAMMAR and G. MARTIN, 179FRIEDEMANN, T. E. and W. D. SUTLIFF, Fermentable Poly-

saccharide in the Blood, 335FULLER, G. D., Henry Chandler Cowles, 363FULLER, M. and J. MACMASTERS, Compound Words, 157FULTON, J. F., Physiology of the Nervous System, 110;

Biography of Dr. Harvey Cushing, 443Fungi and Fungous Diseases, J. G. HOPKINS and J. S.KARLING, 303

FUNK, C. and I. C. FUNK, Hormones, 443

GAGER, C. S., "Distinction" in "Science," 209Galactic and Extragalactic Structure, 0. STRUVE, 85GAMBLE, D. L., Liquid Latex and Blood Vessels, 520GARDNER, F. E., P. C. MARTH and L. P. BATJER, Spray-

ing Apples, 208Gas, Velocity of Sound in, W. B. DUBLIN, W. M.BOOTHBY and M. M. D. WILLIAMS, 399; Analysis, N.F. CHILDERS, D. C. KIPLINGER and H. W. BRODY, 447

Gases, and Isotopes, A. BRAMLEY and A. K. BREWER, 165;Respiratory, J. M. LITTLE and H. S. WELLS, 425

Gastric pHl, J. FLEXNER, M. KNIAZUK and J. NYBOER, 239GAW, H. Z. and L. H. KUNG, Fresh-water Medusae, 299Gay, Frederick Parker, C. W. JUNGEBLUT, 290Genera, Two Rare, T. K. RUEBUSH, 617Geneticists, Mathematical, H. R. HUNT, 354Genetics, International Congress of, 228; Mouse, 247; of

the Fungi, B. 0. DODGE, 379Geodesy and Geophysics, International Union of: Ad-

dresses: R. M. FIELD, C. HULL, S. CHAPMAN, C. H.

MARVIN, F. B. JEWETT and D. LACOUR, 339Geological, Survey, U. S., 438, 508; Society of America,

611Geologists Conference, L. W. FISHER, 594Geology, Central Andes, 10; Historical, R. H. MITCHELL,

441; and Geography, Lectures, C. R. LONGWELL, 514Geometry, Metric, K. MENGER, 38Germany, Public Health in 1938, 321GESELL, R., Warren Plimpton Lombard, 345Glutathione, H. WAELSCH and D. RITTENBERG, 423GOLDBERG, L., Stars in Space, B. J. Bok, 110GORDON, N. E., Literature Service for Chemists, 330GOUDSMIT, S., Radioactivity, 615GOWEN, J. W. and A. M. LUCAS, Vaccine Virus and Ront-gen Rays, 621

GRAHAM, C. L. and R. H. LAMBERT, Discharging of Liq-uids and Washing of Solids, 280

Graham, Evarts Ambrose, In Honor of, 414GRAHAM, R., H. R. HESTER and N. D. LEVINE, Listerella,

336GRANICK, S., L. MICHAELIS and M. P. SCHUBERT, Methy-

lene Blue, 422GRAY, I. E., Entomology, R. Matheson, 593GREGORY, W. K., Carnegie Inst. and Dr. Merriam, 466GRIGGS, R. F., The War and Chronica Botanica, 418Grinnell, Joseph, W. E. RITTER, 75GROSS, E. G. and I. H. PIERCE, Oscar Henry Plant, 557Group Theory, G. A. MILLER, 234Growth, Symposium, 32; and Lactation, J. R. HAAG and

L. D. WRIGHT, 158; Quantitative, L. WALP, 597GUDGER, E. W., A Whale Shark, 138

GUSTAPSON, F. G., Transport of Minerals through Stems,306

GUTENBERG, B., Pacific Basin and Earthquakes, 456GUTHE, C. E., American Archeology, 528

HAAG, J. R. and L. D. WRIGHT, Growth and Lactation, 158HALLMAN, N. and P. E. SIMOLA, Citric Acid Synthesis,

594HAMMAR, G. W. and G. MARTIN, Nature of Friction, 179HARRINGTON, H. D., Identifying Plants, 157HARRISON, R. G. and A. L. BARROWS, Activities of the

National Research Council, 1938-39, 575Harvard University, 31, 174, 323HARVEY, E. N., Luminescence of Sugar Wafers, 35; Deep-

Sea Photography, 187HAWKINS, H. L., Scientific Societies, 261Health, Conservation Contest, 458; Public, at Harvard,

174; Association, American, 248; in Germany, 321HEIDT, L. J., Isolation of Monochromatic Light, 473HEMmING, F., Rules of Nomenclature, 420Hemoglobin, in Blood of Normal Individuals, E. AmMUND-

SEN, 372; L. EICHELBERGER and OTHERS, 443Heparin and Blood Clotting, T. ASTRUP, 36; J. H. FERGU-

SON, 272; K. M. BRINKHOUS and OTHERS, 539Herbarium Specimens, C. S. SEMMENS, 624Herpes Virus, K. ANDERSON, 497HERRICK, G. W., William R. Perkins, 291Hibernation of Anopheline Eggs, W. S. STONE and F. H.K. REYNOLDS, 371

HILDEBRAND, J. H., Pure Liquids and Solutions, 1HIMWICH, H. E. and OTHERS, Cerebral Metabolism, 398HOAG, J. B., Radio Waves in Water, 277HOBBS, W. H., A Polar Mirage, 513HOLLINGWORTH, H. L., Chewing for Relaxation, 385HOLMES, H. N. and R. E. CORBET, Bone Marrow, 518HOLMES, S. J., Darwinian Ethics, 117HOLT, A. C., Medical Library Association, 255Homeostatic Adjustment, A. S. MARRAZZI, 251HOPKINS, J. G. and J. S. KARLING, Fungi and Fungous

Diseases, 303Hormones: Pituitary Growth, H. M. EVANS and OTHERS,

19, Lactogenic, H. M. EVANS and OTHERS, 376; Ketene,Action on, C. H. LI, M. E. SIMPSON and H. M. EVANS,140; Generator, C. H. LI, 143; Lactogenic, C. H. LI,W. R. LYONS and H. M. EVANS, 622; Neuro-, Respira-tory, T. KOPPANYI and C. R. LINEGAR, 141; Ovarian, U.J. SALMON, R. I. WALTER and S. H. GEIST, 162; PlantWound, J. ENGLISH, JR., J. BONNER and A. J. HAAGEN-SMIT, 329; as Dietary Constituents, C. FUNK and I. C.FUNK, 443

HRDLICKA, A., Palcolithic Find in Asia, 296HUBBARD, G. D., Marking Specimens, 624HUBERT, E. E., An Electric Sterilizer, 377HUDDLESON, I. F. and R. B. PENNELL, Brucella antiserum,

571HUNT, H. R., Mathematical Geneticists, 354HUNTINGTON, E., Medical Climatology, C. A. Mills, 540Hurricane, New England, S. W. BROMLEY, 15; Warnings,

266; '38, Ozone in, C. A. PETERS, 491HUTCHINGS, B. L. and D. W. WOOLLEY, Hemolytic Strep-

tococci, 41Hydrogenation of 3-Methylxanthine, T. B. JOHNSON and

J. C. AMBELANG, 68

Indian Tribes, Index, M. W. STIRLING, 514Infection, Resistance, J. W. COLVIN and C. A. MILLS, 275Insects, Adaptation of, S. E. FLANDERS, 82; Embalming,

C. C. SMITH, 116Insulin, Physical Chemistry, E. J. COHN and OTHERS, 183Invention, Scientific, M F ASHLEY-MoNTAGU, 592Ionosphere, Ionization in, F. L. MOHLER, 137Iron in Dried Peas and Beans, L. ASCHAM, M. SPEIRS and

D. MADDOX., 596

JEFFREY, E. C. and E. J. HAERTL, Seeds in Trillium, 81JENKINS, W. A., Disease of Snap Beans, 63JEWETT, F. B., Remarks of the President at the Dinner of

the National Academy of Sciences, 401

v

ECONTENTS ANDI INDEX

JOHNSON, T. B. and J. C. AMBELANG, Hydrogenation of3-Methylxanthine, 68

JUNGEBLUT, C. W., Frederick Parker Gay, 290

KEITT, G. W., Toxicity of Sodium Salt, 139; Plant Pa-thology, I. E. Melhus and G. C. Kent, 331

KENNARD, E. H., Floyd Karker Richtmyer, 530Kennelly, Arthur Edwin, C. L. DAWES, 319KERNOHAN, G., Carotene, 623Ketene, Action on Hormone, C. H. LI, M. E. SIMPSON and

H. M. EVANS, 140; Generator, C. H. Li, 143KIECH, V. C., Southwestern Division of the American

Association for the Advancement of Science, 38KOPPANYI, T. and C. R. LINEGAR, A Respiratory Neuro-hormone, 141

XKRAATZ, W. C., Zoology for Pre-medical Students, 592KRAMER, J., Root and Root-hair Structure, 140KRAus, C. A., Non-aqueous Solutions, 281KUBES, V. and F. A. Rios, Equine Encephalomyelitis, 20KUNITZ, M., Crystalline Protein, 112

Labeling Museum Specimens, V. E. SCHEID, 69Laboratory, Fisheries, Gulf Coast, 11; Puerto Rico, 265;New Milford, 365; Conference, 413; Galton, 436

LEAKE, C. D., Popularization of Science, 84; Books onMedicine, 180

LEVINE, S. Z., E. MARPLES and H. H. GORDON, Role ofVitamin C, 620

LEVITZ, M., D. PERLMAN and M. T. BOGERT, Synthesis ofSpirocyclohexane-1, l-Indanone-3, 114

LEWY, F. H. and OTHERS, Pellagrins with Beriberi, 141Li, C. H., Ketene Generator, 143; and M. E. SIMPSON andH. M. EVANS, Action of Ketene on Hormone, 140; andW. R. LYONS and H. M. EVANS, Lactogenic Hormone,622

Light, Monochromatic, Isolation of, L. J. HEIDT, 473Lindgren, Waldemar, W. H. NEWHOUSE, 584LINDSAY, R. B., Philosophy of Physics, W. H. Watson, 302Linkage in Fowl, J. H. BRUCKNER and F. B. HUTT, 88Liquids, Pure, and Solutions, J. H. HILDEBRAND, 1; Dis-

charging of, and Washing of Solids, C. L. GRAHAM andR. H. LAMBERT, 280

Listerella, R. GRAHAM, H. R. HESTER and N. D. LEVINE,336

LITTLE, J. M. and H. S. WELLS, Respiratory Gases, 425LOCKE, A. and R. R. MELLON, Sulfanilamide, 231LOEB, R. F. and OTHERS, Desoxycorticosterone Esters, 496LOEHWING, W. F., Phasic Development, 552Lombard, Warren Plimpton, R. GESELL, 345Longevity, H. G. BARBOUR and F. S. HAMMETT, 538LONGWELL, C. R., Lectures in Geology and Geography, 514LOWMAN, A., Precipitate Dryer, 143LUCK, J. M., Meeting of the Pacific Division, 123LULL, R. S., Presentation of Danial Giraud Medal, 24Luminescence of Sugar Wafers, E. N. HARVEY, 35LYON, C. J., Preserved Wood, 419

MAcDOUGAL, D. T., F. E. LLOYD and H. S. REED, ChronicaBotanica, 566

MAcDuFFEE, C. C., Elementary Matrices, R. A. Frazer,W. J. Duncan and A. R. Collar, 253

Mammals of the Great Plains, V. E. SHELFORD, 591Manganese and Hatchability of Hen's Eggs, J. B. CHRIS-

TIANSEN, J. G. HALPIN and E. B. HART, 356MANNING, W. M., Collected Works, G. A. Miller, 593Marking Specimens, G. D. HUBBARD, 624MARRAZZI, A. S., Homeostatic Adjustment, 251Mastodon Remains, W. J. SUMPSTINE and B. R. WEIMER,

539Mathematical, Society of America, 175, 366; Errors in

Encyclopedia Britannica, G. A. MILLER, 512Mathematicians, Summer Meetings, 32MATHER, K. F., Recent Books in Geology, 492MATZKE, E. B., Botanical Books, 65Mayo Brothers and Their Clinic, H. CUSHING, 225MEAD, A. D., Biology and Education, 241

Mead Johnson and Company "B-Complex" Award, 322Medals: Daniel Giraud Elliot, R. S. Lull, 24; Agassiz,H. U. Sverdrup, 24; Chandler, T. H. Chilton, 175;William H. Nichols, J. M. Nelson, 367; John Fritz,C. F. Hirshfeld, 460; Melville, L. M. Goldsmith, 485;Mechanical Engineers, J. E. Gleason, 486; Holley, C. E.Johnson, 486; Worcester Reed Warner, R. Eksergian,486; Pi Tau Sigma, J. I. Yellott, 486; Willard Gibbs,V. N. Ipatieff, 486; Egleston, W. H. Aldridge, E. H.Armstrong, M. T. Bogert, G. Dunn, A. S. Dwight, H.Krumb, I. Langmuir, L. S. Moisseiff, R. Peele, S. J.Pigott, R. C. Stanley, A. L. Walker, 509; Penrose,W. B. Scott, 560; Royal Society: Copley, T. H. Morgan,580; Royal, P. A. M. Dirac, D. Keilin, 581; Davy, J. W.MeBain, 582; Hughes, G. P. Thomson, 582

Medical, Library Association, A. C. HOLT, 255; Society,Chicago, 293; School of the University of Minnesota,323; M. B. VISSCHER, 494; Education at Chicago, 349;Association, American, Platform, 507; Climatology,C. A. Mills, E. HUNTINGTON, 540

Medicinal Products of the United States, 150Medicine, Horizons, W. OVERHOLSER, 359; History of, 389Medusae, Freshwater, H. Z. GAW and L. H. KUNG, 299MENGER, K., Metric Geometry, 38MENKIN, V., Inflammatory Exudates, 237Merriam, Dr., and Carnegie Institution, W. K. GREGORY,

466MERRILL, E. D., William Henry Brown, 531Metabolism, Cerebral, H. E. HIMWICH and OTHERS, 398Meteorite, Australian, 201Meteorites, Where do They Come from?, C. C. WYLIE, 264Methylene Blue, S. GRANICK, L. MICHAELIS and M. P.SCHUBERT, 422

Microbiology, International Congress, 228; Inter-Amer-ican Society of, 508

Microfilm Records, Filing of, H. P. BROWN and J. A.AUSTIN, 573

Microorganisms and the Soil, S. A. WAKSMAN and J. P.MARTIN, 304

MILLER, G. A., Group Theory, 234; Mathematical Errorsin Encyclopedia Britannica, 512

Mimicry, Vocal, of Starling, H. A. ALLARD, 370Minerals, Transport through Stems, F. G. GUSTAPSON, 306Mirage, Polar, W. H. HOBBS, 513MITCHELL, R. H., Historical Geology, 441MITCHELL, W. C., Public Relations of Science, 599MOHLER, F. L., Ionization in the Ionosphere, 137MONTGOMERY, C. G., Magnetism, 374; Radio-activity, 374;

Physics, 514, 515MOORE, D. H., J. VAN DER SCHEEER and R. W. G. WYCKOFF,Antipneumococcus Horse Sera, 357

MORRIS, D. L. and C. T. MORRIS, Sweet Corn, 238MORRIS, S. G., Nutritional Muscular Dystrophy, 424Mosquito Larvae, C. M. WILLIAMS, 21MOULTON, F. R., Milwaukee Meeting of the American

Association, 45; Columbus Meeting, 499; Non-Tech-nical Books on Science, 590

MULLER, C. H., One-Man Authority Citations, 207MULLINS, L. J. and S. C. BROOKS, Living Protoplasm, 256MURLIN, J. R. and OTHERS, Tumor Growth, 275Museo Poey, Havana, CORRESPONDENT, 490Museum, National, of Canada, 32; Thomas R. Baker,

Rollins College, 365Museums, American Association of, 247

Naples Zoological Station, R. E. COKER, 206Nerve, Tissue Sections, Mounting, R. SPOERRI, 260; Im-

pulses, Chemical Mediation of, W. B. CANNON, 521Nervous System, J. F. FULTON, 110; H. DALE, 393NEWHOUSE, W. H., Waldemar Lindgren, 584Nicotinamide and Dysentery Bacilli, A. DORFMAN, S. A.KOSER and F. SAUNDERS, 544

Nitrogen, Fixed, and Crop Production, T. H. BHASKARANand S. C. PILLAI, 595

Nomenclator Zoologicus, T. D. A. COCKERELL, 178Nomenclature, G. A. MILLER, 207; F. HEmMING, 420

vi SCIENCE

NEW SERIES 1VOL. XC J SCIENCE

NORRIS, E. R. and D. W. ELAM, Crystalline Pepsin, 399Noyes, William Albert, Laboratory of Chemistry, R.ADAMS, 71; Response, W. A. NOYES, 73

Nucleic Acids, Sensitizing Properties of, W. L. WICKEN-WERDER, M. V. BUELL and J. E. HOWARD, 356

Nutrition, Canine, W. C. ROSE aInd E. E. RICE, 186

O 'CONNELL, D. T., Black Dye of the Navajos, 272OETTEKING, B., Dental Symbols, 464OPATOWSKI, I., Allowed Directions of Cosmic Rays, 463Operating Stand, C. S. APGAR, JR., 22Ophthalmology and Otolaryngology, Academy of, 437Ornithological, Expedition, 246; Collection, Bishop, 347Ornithologists' Union, American, 78OSTERHOUT, W. J. V. and J. W. MURRAY, Water in Non-

aqueous Solutions, 397OVERHOLSER, W., Horizons of Medicine, 359Oxidation, Red, Products of Tocopherols, L. I. SMITH,W. B. IRWIN and H. E. UNGNADE, 334

Pacific Islands, Expedition, 173; Science Congress, R. E.CLAUSEN, 449; Basin and Earthquakes, B. GUTENBERG,456

PAINTER, T. S., Bird and Mammalian Chromosomes, 307Paleolithic Find in Asia, A. HRDLI6KA, 296Palm, Household, 0. F. COOK, 298Paramecia, Culture Medium for, B. G. ANDERSON, 448PARKER, G. H., Anesthesia by Chilling, 63PARRAN, T., JR., Cancer and the Public Health, 427;

Livingston Farrand, 583PAUL, J. R., J. D. TRASK and C. S. CULOTTA, Poliomyelitic

Virus in Sewage, 258PEARCE, L., Tryparsamide and Sleeping Sickness, 39Pepsin, Crystalline Salmon, E. R. NORRIS and D. W. ELAM,

399Perkins, William R., G. W. HERRICK, 291PERLMAN, E., A Spectrocolorimeter, 279PETERS, C. A., Ozone in the '38 Hurricane, 491PEUGNET, H. B., Vitamin C and Frog Heart, 162PFUND, A. H., Atmospheric Contamination, 326Phasic Development, W. F. LOEHWING, 552Philosophical Society, American, Grants, 568Photography, 150; Deep-Sea, E. N. HARVEY, 187Photosynthesis, N. G. CHOLODNY and A. C. GORBOVSKY, 41;

S. RUBEN and OTHERS, 570Phymatotrichum omnivorum, G. M. and M. 0. WATKINS,

374Physicians, College of, Philadelphia, Lectures, 349Physicists, Visiting, Cornell University, 367Physics, Teachers of, N. F. BEARDSLEY, 618Pineapple Juice, J. BERGER and C. F. ASENJO, 299Plant, Oscar Henry, E. G. GROSS and I. H. PIERCE, 557Plants, Identifying, H. D. HARRINGTON, 157; Solute

Transport in, A. S. CRAFTS, 337Plasmodium of Hemitrichia, L. G. CARR, 329Pleuropneumonia-like Microorganisms, A. B. SABIN, 18Pneumococci, Agglutination of, P. F. DE GARA, 378Poliomyelitis Virus in Sewage, J. R. PAUL, J. D. TRASK

and C. S. CULOTTA, 258Poll, Heinrich William, H. CUMMINS, 172Pollen Germination, P. F. SMITH, 163Polysaccharide, Fermentable, in the Blood, T. E. FRIEDE-MANN and W. D. SUTLIFF, 335

Population Centers, C. B. READ, 61, 419; R. CHURcH, 418Potato Disease in Colorado, L. B. DANIELS, 273POULTER, R. W., Wound Healing in Red Clover, 108POWERS, W. L., Boron as a Fertilizer, 36Press and Scientists, 333Prontosil, Dye for Insects and Plants, W. CARTER, 394Protein, Crystalline, M. KUNITZ, 112; Adenocarcinoma,

L. E. ARNOW and J. C. OPSAHL, 257Proteins, Denaturation of, M. L. ANSON, 256Protoplasm, L. J. MULLINS and S. C. BROOKS, 256Pseudomethemoglobin, G. BARKAN and 0. SCHALES, 616Puerto Rieo, Inter-American University, 201; Research

Laborat#ry in Fisheries, 265

RABER, O., Compound Words, 157Races, Human, Origin of, A. B. D. FORTUYN, 352Radio Waves, J. B. HOAG, 277; and Plant Growth, J. VAN

OVERBEEK, L. R. BRANTLEY and G. W. POTAPENKO, 470RALEIGH, G. J., Air Compressor, 598RAMALEY, F., Botany in Italy, 81Rat, Molars, Mottled Enamel in, G. J. Cox and OTHERS,

83; and Horsley-Clarke Instrument, G. CLARK, 92;Albino, Epidermis of, C. M. BLUMENFELD, 446

Rats, Exercising, E. J. FARRIS and G. ENGVALL, 144RAY, L. L., Artifacts Made from Chalcedony, 372RAZRAN, G. H. S., Conditioned Salivary Technique, 89READ, C. B., Centers of Population, 61, 419Research, Council, Canada, 30, 468; Biochemical, at Pitts-

burgh, 151; National, R. G. HARRISON and A. L. BAR-ROWS, 575; in Venezuela, G. G. SImPSON, 210; andManufacturing, Courses, 247; Cryogenic, 348; on Prob-lems of Alcohol, 389; in Industry, 535

Richtmyer, Floyd Karker, E. H. KENNARD, 530RIDEAL, E. K., Film Reactions and Biology, 217RITTER, W. E., Joseph Grinnell, 75ROBERTS, R. H. and B. E. STRUCKMEYER, Blossom-induc-

ing Stimulus, 16ROBINSON, O., Oxygen Store in Diving, 276ROBLIN, R. O., JR., and P. H. BELL, Sulfanilamide, 327Rochester Athenaeum and Mechanics Institute, 150ROMANOFF, A. L. and C. L. COTTRELL, Bio-electric Poten-

tials of Hen's Egg, 471Root and Root-hair Structure, J. KRAMER, 140ROSE, R. E., Chlorazol Fast Pink BKS, 252ROSE, W. C. and E. E. RICE, Canine Nutrition, 186ROTHEN, A. and K. LANDSTEINER, Adsorption of Anti-

bodies, 65Royal, Society, and Kaiser Wilhelm Gesellschaft, 9; of

Canada, 159; Swedish Academy, 152Rubber, Vulcanization of, 273RUBEN, S. and OTHERS, Photosynthesis, 570RUEBUSH, T. K., Two Rare Genera, 617Ruminant, Adult, Physiology of, E. B. FORBES, 270

SABIN, A. B., Pleuropneumonia-like Microorganisms, 18Salivary Technique, Conditioned, G. H. S. RAZRAN, 89SALMON, U. J., R. I. WALTER and S. H. GEIST, OvarianHormone, 162

Salt, Sodium, Toxicity of, G. W. KEITT, 139SCHEID, V. E., Labeling Museum Specimens, 69SCHMELKERS, F. C., Vitamin B Complex, 113Science, Museum, London, 102; and Standards of Living,

S. A. RICE, 167; Relations to Society, 294; The Voiceof, 300; and Social Pioneering, I. BOWMAN, 309; Non-Technical Books on, F. R. MOULTON, 590; Public Rela-tions of, W. C. MITCHELL, 599

Scientific, Societies, H. L. HAWKINS, 261; Congress, 485SCOTT, W. B., Presentation of Daniel Giraud Medal, 23SEALOCK, R. R. and H. E. SILBERSTEIN, Vitamin C, 517Seeds, Germination of, I. V. SHUNK, 565Seismological Society of America, A. J. WESTLAND, 183SEMMENS, C. S., Herbarium Specimens, 624Sera, Horse, Antipneumococcus, D. H. MOORE, J. VAN DERSCHEER and R. W. G. WYCKOFF, 357

SEWARD, A., The Western Isles through the Mists ofAges, 189

SHANES, A. M., Shape of the Cilia in Motion, 259SHAPIRO, H., Carrel Flasks, 308Shark, Whale, E. W. GUDGER, 138SHAW, E. H., JR., Harry Victor Atkinson, 55SHELFORD, V. E., Terrestrial Animals, 564; Large Mam-

mals of the Great Plains, 591SHORTLEY, G. H., Quantum Mechanics, V. Rojansky, 420SHUNK, I. V., Germination of Seeds, 565Sigma Xi, Society of the, 57SIMPSON, G. G., Research in Venezuela, 210Skin Pigment Changes and Sunlight, E. A. EDWARDS and

S. Q. DUNTLEY, 235Sleeping Sickness and Tryparsamide, L. PEARCE, 39

vii

rCONTENTS ANDI INDEX

Sloth, Deslothing, S. W. BRITTON and R. F. KLINE, 16SMITH, C. C., Embalming Insects, 116SMITH, L. I., W. B. IRWIN and H. E. UNGNADE, Red Oxi-

dation Products of Toeopherols, 334SMITH, P. E., Physiology of the Pituitary Body, H. B.van Dyke, 355

SMITH, P. F., Pollen Germination, 163SMITH, S. C., Alabama Academy of Science, 111SNODGRASS, R. E., Insect Physiology, V. B. Wiggles-

worth, 159Social Pioneering and Seience, I. BOWMAN, 309Solar Activity, H. T. STETSON, 482Solutions, Non-aqueous, C. A. KRAUSS, 281SOUTHWELL, R. V., Outlook of Engineering Science, 27Spectrocolorimeter, A. E. PERLMAN, 279Spirocyclohexane-l, l-Indanone-3, Synthesis of, M. LEVITZ,

D. PERLMAN and M. T. BOGERT, 114SPOERRI, R., Mounting Nerve Tissue Sections, 260Spraying Apples, F. E. GARDNER, P. C. MARTH and L. P.BATJER, 208

Spruce, Norway, C. C. DEUBER and J. L. FARRAR, 109"Stars" in "American Men of Science," J. H. G., 252;

S. S. VISHER, 252Sterility, Somatoplastic, in Medicago sativa, R. A. BRINKand D. C. COOPER, 545

Sterilizer, Electric, E. E. HUBERT, 377STETSON, H. T., Solar Activity, 482STIRLING, M. W., Index to "Indian Tribes," 514STONE, W. S. and F. H. K. REYNOLDS, Bacteria-free Cul-

tures of Trichomonas hominis, 91; Hibernation ofAnopheline Eggs, 371

Stone, Witmer, 434Stratosphere, Balloon Flights into, 246Streptococci, Hemolytic, B. L. HUTCHINGS and D. W.WOOLLEY, 41

STRUVE, O., Galactic and Extragalactic Structure, 85Sulfanilamide, A. LOCKE and R. R. MELLON, 231; R. 0.

ROBLIN, JR., and P. H. BELL, 327; R. H. BROH-KAHN,543

SUMPSTINE, W. J. and B. R. WEImER, Mastodon Remains,539

Surface Currents, D. L. WEBSTER, 107SUTTON, R. M., After-image and Judgment of Size, 616SVERDRUP, H. U., Presentation of the Agassiz Medal, 26SWANN, H. G., Diabetes insipidus, 67SWANN, W. F. G., Matter and Light, L. de Broglie, 373;Wavelength Tables, G. R. Harrison, 373

Systematics, Association for Study of, 227

TALIAFERRO, W. H., Malaria, J. S. Simmons, 211TALMAGE, S. B., Compound Words, 155TAYLOR, A., Embryonic Tissue and Parturition in the

Rat, 472Terrestrial Animals, V. E. SHELFORD, 564TERRY, R. J., A Thoracic Window, 43THEORELL, H. and A. AKESSON, Absorption Spectrum ofCytochrome C, 67

Thermal Tolerance, Reptilian, R. B. COWLES, 465Thoracic Window, R. J. TERRY, 43Thurston, Robert Henry, Hundredth Anniversary, 152;W. F. DURAND, 547

Tinney, Fred William, CORRESPONDENT, 608Tobacco Mosaic, Virus Protein, V. L. FRAMPTON, 305Todd, David, R. H. BAKER, 8Trichomonas hominis, Bacteria-free Cultures of, W. S.STONE and F. H. K. REYNOLDS, 91

Trillium, Unfertilized Seeds in, E. C. JEFFREY and E. J.HAERTL, 81

Tuberculosis Association, National, Grants, 77Tumor, I, Chicken, A. CLAUDE, 213; Growth, J. R. MUR-LIN and OTHERS, 275

TURNER, C. L., Viviparous Cyprinodont Fishes, 42TWOMEY, A. C.) S. J. TWOMEY and L. R. WILLIAMS,Selenium and Duck Sickness, 572

TYLER, A. and S. W. Fox, Sperm Agglutination, 516

Urine Chloride Concentration, A. CANTAROW, 375

Vaccine Virus and Rontgen Rays, J. W. GOWEN and A. M.

LUCAS, 621VAN OVERBEEK, J., L. R. BRANTLEY and G. W. POTAPENKO,Radio Waves and Plant Growth, 470

Vascular Preparations, Human, 0. V. BATSON, 518VAUGHAN, T. W., Presentation of Agassiz Medal, 24VILLELA, G. G. and A. M. LEAL, Vitamin B1, 179VISHER, S. S., "Stars" in "American Men of Seience,"

252VISSCHER, M. B., Celebration of the Medical School of the

University of Minnesota, 494Vitamin, B, F. C. SCHMELKES, 113, Mead Johnson andCompany, 322; Vitamin B,, G. G. VILLELA and A. M.LEAL, 179, G. E. YOUNGBURG, 566; Vitamin B2, H. M.EVANS and OTHERS, 377; Vitamin C, H. B. PEUGNET,162; R. C. BURRELL and H. A. MILLER, 164; R. R.SEALOCK and H. E. SILBERSTEIN, 517; S. Z. LEVINE,E. MARPLES and H. H. GORDON, 620; Vitamin E, N.SHIMOTORI, G. A. EMERSON and H. M. EVANS, 89;Vitamin K, E. FERNHOLZ and S. ANSBACHER, 215

WAELSCH, H. and D. RITTENBERG, Glutathione, 423Waite Institute, School in Soil Science, 31WAKSMAN, S. A. and J. P. MARTIN, Microorganisms and

the Soil, 304WALP, L., Culture Technic for Growth Studies, 597Washburn, Margaret Floy, K. M. DALLENBACH, 555Water in Non-aqueous Solutions, W. J. V. OSTERHOUT and

J. W. MURRAY, 397WATKINS, G. M. and M. 0. WATTKINS, Phymatotriehum

omnivorum, 374WEBBER, H. E., An X-ray Densitometer, 115WEBSTER, D. L., Surface Currents, 107WEIL, P. and J. S. L. BROWNE, Excretion of Cortin, 445Western Isles through Mists of Ages, A. SEWARD, 189WESTLAND, A. J., Seismological Society of America, 183WICKENWERDER, W. L., M. V. BUELL and J. E. HOWARD,

Sensitizing Properties of Nueleic Acids, 356WIGGERS, C. J., Physiology, J. M. Luck, 332WILDER, R. L., Plant Topology, M. H. A. Newman, 354WILLIAMS, C. M., Mosquito Larvae, 21WILSON, C. L., Plant Life, C. J. Hylander, 331WILSON, R. H. and F. DEEDS, Chronic Cadmium Poisoning,

498WINANS, C. F., Formation of Alcohol Bead, 394Wood, Preserved, C. J. LYON, 419WOOD, R. W., A Firefly "Spinthariscope," 233Woods, Frederick Adams, C. B. DAVENPORT, 607World's Fair, Hall of Man, 321Wound Healing in Red Clover, R. W. PouLTE, 108WYLIE, C. C., Where do Meteorites Come from?, 264

Yeast and Ultra-Violet Light, T. F. ANDERSON and B. M.DUGGAR, 358

YOUNGBURG, G. E., Color Reaction for Vitamin B,, 566

Zoologieal Station, Naples, R. E. COKER, 256Zoology, at Cornell University, 76; for Pre-medical Stu-

dents, W. C. KaAATZ, 592

viii SCIENCE

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H. K. LEWIS & CO.. LTD.136 GOWER STREET, LONDON, W.C.1, ENGLAND

LaMotte Outfit forMastitis Test in Cows' Milk

An inexpensive unit containing all the equip-ment necessary for determining whether or notmastitis infection is present in the herd. Acomplete test may be made in less than fiveminutes. Full instructions accompany eachoutfit. Price $2.00 F.O.B. Baltimore, Md.

LaMotte Chemical Products Co.Dept. "H" Towson, Baltimore, Md.

2 SCIENCE-ADVERTISEMENTS VOL. 90, NO. 2323

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JULY 7, 1939 SCIENCE-ADVERTISEMENTS 3

GaQ.~ Rarqw.rL

VOLT-OHM-MILLIAMMETER

marked in the units

you want to readAn exceedlingly versatile combination electrical measuring instrument suitable for making nearly all of theelectrical measurements required in ordinary educational or industrial work. An outstanding feature isthe lack of confusion in reading the meter scale, which is frequently encountered with multiple scale instru-ments. There are 12 different, independent, single range scales on this meter, but only one is exposedbeneath the meter pointer at a time, thus providing the simplicity of a single range instrument for eachof 12 types of measurements. The 12 scales are engraved on a cylinder which rotates with the turningof the selector switch to the desired setting. The selector switch selects the corresponding multiplier, shuntor bridge circuit for the scale exposed.

Four scales are provided for direct current measurements between 0 and 1 ma., 0 and 10 ma., 0 and 1000ma., and 0 and 3 amperes with an accuracy of 2% of full scale deflection. There are 4 scales for directcurrent voltages between 0 and 2 volts, 0 and 10 volts, 0 and 150 volts, and 0 and 1000 volts with anaccuracy of 2% of full scale deflection. Resistance measurements may be made from 3 scales with rangesfrom 0 to 100 ohms, 0 to 50,000 ohms, and 0 to 2 megohms. One scale is provided for alternating currentvoltages between 0 and 250 volts with an accuracy of 5% of full scale deflection. Batteries are providedwithin the case to supply current for the resistance bridge circuit.

82466- - $38.50

SCIENTIFIC INSTRUMENTS & LABORATORY APPARATUSCHICAGO BOSTON

1700 Irving Park Blvd., C1LG) 79 Amherst St.,Lakeview Station Cambridge A Station

a U1.

JULY 7, 1939 SCIENCE-ADVERTISEMENTS 3

4 SCIENCE-ADVERTISEMENTS VOL. 90, No. 2323

THREE NEW

ELECTRIC INTERVAL TIMERSWITH SELF-STARTING, SINGLE-PHASE SYNCHRONOUS MOTOR

8078-A, 8073-B 8074

8073-A. Interval Timer, Electric, motor driven, for actuating Time Markers such as No. 8060, ete.,listed on page 633 of our eatalogue. Consisting of a self-starting, single-phase synehron-ous electric motor mounted on iron base 3 x 5 inches. The motor operates a notched wheelwhich, in turn, actuates a spring lever making contact every 1 second. With connecting

cord,switch and plug. For use on 110 volts, 60 cyeles a................................................ 9.00Code Word .M...r7emdn

8073-B. Ditto, but wFith contact interval of Ys second.10.00Code Word .-.M.. 1emel

8074. Interval Timer, Electric, motor driven, for actuating Time Markers such as No. 8060, etc.,at intervals of Y5, 1, 3 or 6 seconds as desired. Consisting of a self-starting, single-phase synchronous electric motor mounted on iron base 4Y2 inches square. The motoroperates four notched wheels which, in turn, actuate the arm making contacts. With

connecting cord,switch a nd plug.For use on 110volts, 60 cycles a.c ............................................................ 57.0Code Word .-.M.. _emgh

GRAPHIC ELECTRIC TIME MARKER

front view _> erve

8039-C. Time Marker, Graphic, Electric, motor driven, for use directly on the drum by connection withlighting circuit. Of sturdy construction. Consisting of a self-starting, single-phase syn-chronous electric motor mounted, with writing stylus, on an extension rod. The motor op-erates notched wheels which, in turn, actuate a writing lever. Time can be recorded inintervals of Y65 second or 1 second. Overall length, 9 inches. Complete with connecting

c ord, switehand plug For use on 110 volts, 60 eyeley, a.c......................... .00CodeWord ................................................ .M

NOTAny of the above Timers can be furnished on special order to operate on 50 or 25 cycles,110-volt current; or on 60, 50, and 25 cycles, 220-volt current.

ARTHUR H. THOMAS COMPANYRETAIL-WHOLESALE-EXPORT

LABORATORY APPARATUS AND REAGENTSWEST WASHINGTON SQUARE

Cable Address BALANCE, PhUadelphiaPHILADELPHIA, U. S. A.

I

4 SCIENCE-ADVERTISEMENTS VOL. 90, NO. 2323

JULY 7, 1939 SCIENCE-ADVERTISEMENTS 5

Scale MagnifierTelescope Eyepiece

Button for Rotatingthe Amici Prisms

Dispersion Scale

Heating Chamber

Connections forTemperature

Window for Illuminating

The Spencer RefractometerThe many advantages of design andconstruction of the Spencer Abbe'type Refractometer, including thenew fine adjustment, are well worth

a careful study of the actual instru-ment and we gladly will arrange ademonstration through any of oursales offices. Write Dept. U 1.

Spencer Lens CompanyMICROSCOPESMICROTOMESPHOTOMICROGRAPHICEQUIPMENT IF !A

REFRACTOMETERSCOLORIMETERSSPECTROMETERSPROJECTORS

Sales Offices: New York, Chicago, San Francisco, Washington, Boston, Los Angeles, Dallas, Columbus, St. Louis, Philadelphia.

JULY 7, 1939 SCIENCE-ADVERTISEMENTS 5

6SINEAVRIEETVO. 9,N.22

HEYROYSKY MICRO POLAROGRAPHNew Methods for Old

Because of its unusual versatility, the Heyrovsky Micro Polarograph has penetrated a greatvariety of fields. It has brought to innumerable laboratories the possibility for performingmany new procedures formerly impossible because of limited facilities. The Polarograph alsohas permitted the complete revision of many older methods by eliminating time consumingchemical operations and variables due to personal technique. These new improved methods areconsequently much faster and in many instances much more accurate.

Since the introduction of the Polarograph a large volume of literature has been published.A complete bibliography of more than 400 papers will be mailed on request. During the pastyear a considerable amount of research has been done with the Polarograph, and a few of themost interesting publications follow:

The Use of the Dropping Mercury Cathode as a Rapid Method for the Determination ofSoil Oxygen, by S. Karsten, Amer. J. of Botany Vol. 25 (1938) p. 14. The Determination ofDissolved Oxygen by Means of the Dropping Mercury- Electrode, with Applications in Biology,by H. G. Petering and F. Daniels, Journ. of Amer. Chem. Soc. Vol. 60 (1938) p. 2796-2802.The Measurement of Fumaric Acids in the Presence of Maleic, Itaconic, Citraconic and Cis andTransaconitic Acids, by G. Semerano, Mikrochemie Vol. 24 (1938) p. 10-16 (Italian). Con-stitution of Cytochromes, by H. Theorell, Biochem. Zeitschr. Vol. 298 (1938) p. 258-260(Ger.). Polarographic Investigation of Insulin, by C. Tropp, Klinische Wochenschrift Vol.17 (1938) p. 465-469 (Ger.).

A publication completely illustrating and describing the ModelX Heyrovsky Micro Polarograph will be sent on request.

LR B O R R T O R V S U P P L I E SE.H.Sargent & Company * 155 East Superior St., Ehicago

6 SCIENCE-ADVERTISEMENTS VOL. 90, NO. 2323

SCIENCE-ADVERTISEMENTS

LEIFO PHOTOMETER

Universal visual photometer of highest precision for absolute col-orimetry (modulus of extinction), measurement of hydrogen ionconcentration, nephelometry and luminometry -(intensity determina-tion of fluorescence effects). The range of this equipment extendsinto the measurement of extremely low intensities (tyndallometry)where photo-electric methods fail.

CHIEF FERqTURESNo adjustment of lamp due to special method of light transmission.Extremely accurate and reliable method of varying intensity in thecomparison field.Detection of lowest and highest modulus of extinction with specialchambers. (0.01 mm. to 15 cm. working depth).Strictly monochromatic filters used. Monochromator'adaptable forextreme precision.Rapid change-over for nephelometry, densitometry, lustre and coloranalyses.

Write for Catalog No. 16-JY-7

JULY 7, 1939 7

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8 SCIENCE-ADtETISEMENTS VOL. 90, No. 2323

Stand-rigid, stable,and well balanced.Smooth and positivecoarse adjustment.

Ball-bearing fine adjustment ceases actionupon touching cover glass. Dustproof nose-

piece and objectives permanently centetedand designed for maximum definition, reso-lution and color correction. Available with

cither Achromatic, Fluorite, or Apochrom-atic Objectives. Cone type eyepieces with

high eyepoint, a feature valuable to wearersof glasses. Integral mechanical stage with

long range. Rack and pinion substage, x 2SAbbe condenser.

lllmstratedabove-B&L Microscope DDE a com-piece ee oaeL _jo Lw crc.awo.L<> > ~~~~~~~pueteresearcn moaei for the most crilical worFe.

f VWILL ALWAYSBEA B&L MICROSCOPEHe is dealing with an exact science, demanding the utmost in accuracy and pre-cision. His instruments must meet these needs. That's why you will find B&LMicroscopes in use in laboratories throughout the world.

Mechanically and optically, from stand to objectives, each B&L Microscope isdesigned and built to the highest standards. Whether the microscope is usedvisually or for photomicrography, the user is certain of the satisfaction thatcomes from work accurately done. As the demands of his work increase or as newmethods of procedure are developed his B&L Microscope can always be adapted,through available accessories, to a broader field of usefulness.

Address inquiries to Bausch & Lomb Optical Co., 642. St. Paul St., Rochester,N. Y.

BAUSCH & LOMBFOR YOUR EYES, INSIST ON BAUSCH a LOMB EYEWEAR, MADE FROM BAUSCH S LOMBGLASS TO BAUSCH & LOMB HIGH STANDARDS OF PRECISION . . ..... . .

VOL. 90, No. 2323

Now to use the device the wire ring is simply dippedinto water momentarily and a film of liquid imprisonedacross the ring. The animal is then placed in this filmand is automatically retained therein by the action ofthe surface tension on the two sides. The lead weightserves to hold the ring on the stage of the compoundor dissecting microscope in any position desired.The device has the advantage of confining the animal

to a small area and, essentially, to a single plane so

as to eliminate the necessity of continual change offocus. The animals so far studied by this methodshow surprisingly little tendency to struggle, but, tothe contrary, go about their feeding and regular bodymovements within the fluid layer in what appears tobe a normal manner. Furthermore, the large area forgaseous diffusion eliminates any respiratory difficulties.

The method has proved of exceptional value in study-ing mosquito larvae and their relations to the surface,but, presumably, is to be recommended for vitalpreparations of other aquatic invertebrates. The filmslast for considerable lengths of time, depending, ofcourse, upon the relative humidity of the laboratoryair. A number of them were timed at over an hour.Loss of thickness due to evaporation, however, may bereadily remedied from time to time by addition of a

drop of water to the film without disturbing thepreparation.The film may be varied in thickness to accommodate

animals of different sizes by adding more or less waterwith an eye-dropper or by using various sizes of wirein the loop.A further advantage is the ability thus offered to

study the ventral side of the animal by simply turningthe lead block over on its other end.

CARROLL M. WMILLAMSHARVARD UNIVERSITY

A PRACTICAL OPERATING STAND

THE operating stand described herewith was espe-

cially constructed for use in experimental surgery.

The advantages of this type of stand are: (1) Low costand ease of construction. (2) Interchangeable oper-

ating table tops for various sizes of animals. (3) Theoperating table top may be tilted through 180 degrees.(4) The operating table top may be rotated through360 degrees. (5) The operating table top may be ele-vated from 29 inches to 45 inches allowing a sitting or

standing operating position. (6) The single columnallows maximum leg room and the entire stand occupieslittle laboratory space.

The entire column (1) is constructed of pipe andpipe rail fittings. A is a 2-inch pipe rail base, B is a

piece of 2-inch pipe 20 inches long drilled and tappedat C for the locking bolt, D is a piece of 1i-inch pipe20 inches long and E is a li-inch pipe rail adjustablebase. The brace F and H is of strap iron and is at-

tached to the operating table top by means of an awn-

ing bracket G.The operating table top is of the size that will accom-

modate the animal being studied and is made mainlyof wood, held together by strap iron. The cross see-

2

I

FIG. 1

tion (2) shows the manner of construction. A readymeans of interchanging table tops is provided bythreaded lead sockets in the wood base of the top;thumb screws in these hold the top securely to the col-umn. In use the stand is securely bolted to the floor.

CHARLES S. APGAR, JR.CORNELL UNIVERSITY MEDICAL COLLEGE,NEw YORK, N. Y.

BOOKS RECEIVEDAnnual Review of Biochemical and Allied Research in

India, Vol. IX, 1938. Pp. 165. Society of BiologicalChemists, Bangalore. Rs. 3, or 6 sh.

BALAREW, D. Der Disperse Bau der Festen Systeme;Allgemeine Theorie der Verunreinigung Fester Systeme.Pp. vi+240. 45 figures. Steinkopff, Dresden. RM8.62.

Bollettino del Centro Volpi di Elettrologia; October, No-vember, December, 1938, XVII, No. 4. English edi-tion. Pp. 124. 7 figures. Volpi Centre of Electrol-ogy, Venice. L. 30.

BORING, EDWIN G., HERBERT S. LANGEELD, HARRY P. WELDand others. Introduction to Psychology. Pp. xxii +652. 128 figures. Wiley. $3.00.

BRUNT, DAVID. Physical and Dynamical Meteorology.Second edition, revised. Pp. xxiv + 428. 119 figures.Macmillan. $6.75.

COWDRY, E. V., Editor. Problems of Ageing; Biologicaland Medical Aspects. Pp. xxx + 758. 121 figures.Williams and Wilkins. $10.00.

DUBOIs, H. M. Monographie des Betsileo (Madagascar);Travaux et Memoires de L'Institut D 'Ethnologie, Uni-versity of Paris, XXXIV. Pp. xvi+1510. 191 fig-ures. 10 plates. The Institute, Paris. 275 fr.

GRAULE, M. Masques Dogons. Travaux et Meinoiresde L 'Institut D 'Ethnologie, University of Paris,XXXIII. Pp. viii + 896. 261 figures. 32 plates.The Institute, Paris. 275 fr.

22 SCIENCE

JULY7,1939 SCIENCE-ADVERTISEMENTS 9~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

v,v vyvvvyv,yyvyvvvvvvvvyvvvvvvv,,,vvyvA New Book of Outstanding Importance

17 VIVA GERMA:N-ENGLISHSCIENCE DICTIONARY

By Louis DEVRIESProfessor and Head of Modern Languages,

Iowa State College

473 pages, 5x7, flexible binding. $3.00

Intended for the use of students in the agricultural, biological, and physical sciences,this unique dictionary contains 48,000 terms (German-English) pertaining to bacteriol-ogy; botany and zoology, including anatomy, embryology, pathology, and physiology;entomology; genetics; horticulture; agronomy; chemistry; physics; and mathematics.

This dictionary, prepared in collaboration with the author's colleagues in thevarious science departments of Iowa State College, is the first to combine fully the agri-cultural and biological terms with those of the physical sciences.

Of exceptional interest is the inclusion of a large number of literary terms neededby the student in science.

Many common idioms are included, and past tenses and past participles are trans-lated, making the dictionary unusually helpful either to advanced or elementary students.

Send for a copy on approval

McGRAW-HILL BOOK COMPANY, INC.330 West 42nd Street, New York, N. Y. Aidwych House, London, W.C.2

JUrLY 7, 1939 SCIENCE-ADVERTISEMENTS 9

JI LY 7, 1939SCIENCE-AD VERTISEMENTS 11~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Now Available

QLUTAMIINTR(NH2 -CO -CH * NH2 * CH2 * CH2 * COOH)

This compound is of unusual interest tothe bacteriologist following the discoveryof its role as an essential in the nutri-tion of streptococcus haemolyticus (1) (2).

General Biochemicals Glutamine is avail-able as crystals, prepared from naturalsources. To facilitate research in bacterialnutrition, this essential organic com-pound is offered to research workers atspecial prices.A list of biochemical products used invitamin research available for scientificinvestigators will be sent upon request.

(1) Mcllwainet al, Biochet. J., 33:223 (1939)"Glutamine and the Growth of Strepto-coccus Haemolyticus."

(2) M. Landy, General Biochemicals, Inc.(To be published)

GENERAL BIOCHEMICALS, INC.(Division ofJohn Wyeth & Brother, Incorporated)

418-3 REPUBLIC BUILDING * CLEVELAND, OHIO

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JIJLY 7, 1939 SCIENCE-ADVERTISEMENTS 11