SCIENCE

NEW SERIES. VOLUME LXXIX

JANUARY-JUNE, 1934

NEW YORKTHE SCIENCE PRESS

1934

THE SCIENCE PRESS PRINTING COMPANYLANCASTER, PENNSYLVANIA

CONTENTS AND INDEXNEW SERIES. VOL. LXXIX-JANUARY TO JUNE, 1934

THE NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS

ABBOT, C. G., The Rotation of the Earth, 454ABEL, J. J., Poisons and Disease, 63, 121Academy, of Arts and Sciences, Amer., 450; of Science,

Indiana, W. E. EDINGTON, 186; Colorado-Wyoming,R. J. GILmORE, 187; Alabama, P. H. YANCEY, 506;Tennessee, J. T. McGILL, 506; Missouri, R. T. DuF-FORD, 542; Iowa, J. C. GILMAN, 543; Kansas, G. E.JOHNSON, 544; Pennsylvania, 544; Virginia, E. C. L.MILLER, 565; Ohio, W. H. ALEXANDER, 566; NorthCarolina, H. L. BLOmQuiST, 592; New Hampshire,G. W. WHITE, 592; of Sciences, Washington, Officers,134; New Orleans, R. GLENK, 367; National, Abstractsof Papers at the Washington Meeting, 373, 435, 460,484; Address of the President, 391; Elections of, 404;Presentation of Medals and Honoria, 551; American,of Tropical Medicine, 154, 425

Aircraft, Eleetrical Hazards of, 244Alabama, Acad. of Science, P. H. YANCEY, 506ALEXANDER, J., Professional Services vs. "Laboratory

Industry," 523ALXANDER, W. H., Ohio Academy of Science, 566"Alfalfa Yellows," F. W. Poos and H. L. WESTOVER,319

American, Asociation for the Advancement of Science,Officers, 8; Address of President, 63, 121; Boston Meet-ing, 85; General Features, 85; Offieers, Newly Elected,88; Edward Lee Thorndike, President-elect, 88; Prize,89; Official Delegates, 90; Business Sessions, 91; Reso-lutions, 91; Financial and Membership Report, 92;Secretaries' Conference and Academy Conference, 94;Science Exhibition, 95; Meeting of Teachers of Sci-ence, 95; Scientifie Scssions, Mathematical Sciences,96; Physical Sciences, 97, Address of Retiring Vice-president, 191; Chemical Sciences, 99, Address of Re-tiring Vice-president, 45; Astronomical Sciences, 100,Address of Retiring Vice-president, 19; Geological andGeographical Sciences, 101, Address of Vice-president,419; Zoological Sciences, 101, Address of Vice-presi-dent, 167; Botanical Sciences, 103, Address of Vice-president, 351; Programs Related to Both Botanicaland Zoological Sciences, 107; Anthropological Sciences,109, Address of Vice-president, 215; Psychological Sci-ences, 110, Address of Vice-president, 145; Social andEconomic Sciences, 111, Address of Vice-president,257; Historical and Philological Sciences, 113, Addressof Vice-president, 281; Engineering, 114; Medical Sci-ences, 116; Agricultural Sciences, 118; EducationalSciences, 118; Organizations related to the Associationas a Whole, 119; Work of the Press, A. H. CLARK,141; Berkeley Meeting, 396, 499; Engineering andAgriculture at, 519; Minutes of the Executive Com-mittee, H. B. WARD, 481; Institute, Award of GoldMedal, 133

Anesthesia, the Biochemistry of, F. F. No"u, 159Angiosperms, Foliar Determinations, A. S. FOSTER, 429Animals, Holder for, H. WULF and T. DURFEE, 414Antarctic, Exploration of, 264Anthropoid Apes, Multiple Births, R. M. YERKES, 430

2 Anthropological, and Ethnological, Sciences, Congress of,- 177, 557; Expedition, J. B. CLELAND, 295- Anthropology, and Genetics, C. H. DANFORTH, 215; Phys-

ical Exhibits, Field Museum, 355Appropriations, Federal, for Scientific Work, 28Argentina, It Happened in, B. H. DAWSON, 505Argon, Ionized, in the Spectrum of Upsilon Sagittarii,

, W. W. MOaAN 454

Aristogenesis, H. F. OSBORN, 41Arts and Sciences, Amer. Acad. of, Grants, 425; 450Australia, South, Expedition to, J. B. CLELAND, 295Autogamy in Paramecium aurelia, W. F. DiLLER, 57Automobile and Wild Life, W. HR. DAvIS, 504Avian Malarial Infections, R. D. MANWELL, 544Ayers, Howard, C. THOm and C. M. JACKSON, 515

B., W. A., Roy Lee Moodie, 263Bacteria, Longevity of, C. B. LIPMAN, 230; Nitrifying,

in Deep Seas, C. L. CAREY and S. A. WAKSMAN, 349;Transformation of, W. H. MANWARING, 466

BAILEY, A. J., A Gas Thermostat, 277BALDWIN, J. T., Ja., Fixing Free-living Protozoa, 143Banting Research Foundation, Report of Trustees, V. E.HENDERSON and D. T. FRASER, 232

BARNES, T. C., Effect of Heavy Water on Euglena, 370;Effect of Trihydrol in Liquid Water, 455

Beet Leafhopper, R. A. FULTON and J. C. CHAMBERLIN,346

Behavior, Control of, W. S. HUNTER, 145BEHRE, C. H., JR., and R. K. SUmmMERBELL, Oxidation-

Reduction Reactions, 39Belgians, King of the, 264Bell System Researches, 366BERGMANN, M., Synthesis of Proteins, 439Bern-beri Vitamin Field, R. R. WILLIAMS, 410BERRY, E. W., "London Clay Flora," 274BILLINGS, M., Paleozoic Rocks of New Hampshire, 55Bio-hydraulic Activities, D. L. Fox, 292Biological Sciences, Nat. Research Fellowships, 357Bird Refuge, Killcohook, 265; Migratory, 403BLACK, P. T., Efficient Relay, 322BLISS, C. I., The Method of Probits, 38, 409BLomQuIsT, H. L., North Carolina Acad. of Science, 592Blood, Cytology of Normal Rabbits, A. E. CASEY, P. D.ROSAHN, C. K. Hu and L. PEARSE, 189; Sugar andSmoking, H. W. HAGGARD and L. A. GIREENBERG, 274;D. L. THOMSON, 386; Circulation of, Y. HENDERSON,A. W. OUGHITERSON, L. A. GREENBERG and C. P.SEARLE, 508

BLUM, W., Exergic and Endergic Reactions, 84, 273BOGERT, M. T., and P. M. APFELBAUM, Irene, 280BOND, R. M., Culture Method for Daphnia, 60BONNERJEA, B., India and American Science, 343Botanic Garden, U. S., W. J. YOUNG, 252; 403; F. A.VARRELMAN, 206

Botanical, Nomenclature, Conventions, H. F. COPELAND,11; Garden, New York, 35; Research, H. L. SHANTZ,351; and Taxonomy, A. S. HITCHCOCK, 407

BOUGHTON, W. A., Naming Hydrogen Isotopes, 159BOWIE, W., Gravity Stations on the Nile Delta, 410BOWMAN, I., Grants, Nat. Research Council, 58, 566BRAGG, A. N., Paramecium trichium, 524BRAGG, W. L., The Physical Sciences, 237BRAMLEY, A., The Neutron, 160BRANSON, C. C., Permian Sharks, 431BRENEMAN, W. R., Endoorine Extracts, 434BRIGGS, L. J., Edward Wight Washburn, 221Brighton, Thomas Bow, 333BRINK, R. A., Non-bitter Variety of Melilotus, 301British, Natural History Museum, Gifts to, 49; Honors,

74; Dept. Scientific and Industrial Research, 197; PostOffice, Research in, 243; Industries Fair, 311; Museum,Natural History, 355; Assoc. of Scientific Workers,

[CONTENTS ANDINDEX.

380; Assoc. for Advancement of Science, AberdeenMeeting, 471; India, Joint Expedition to, 535

BRODIE, M., Immunization against Poliomyelitis, 594; andA. R. ELVIDGE, Transmission of the Virus of Polio-myelitis, 235

BROWN, B., A Change of Names, 80BROWN, C. H., German Periodicals, 250BROWN, C. W., and F. M. HENRY, Cell Masses, 457BROWN, W. L., A Rich Source of f-carotene, 481BRUCE, W. F., Extractor for Fluid Systems, 253Bryozoon, Freshwa-ter, U. DAHLGREN, 510BUNZELL, H. H., A Code for Chemists, 341

Calibration Method, J. E. HEARN, 458CAMPBELL, W. W., Address of the President of the Na-

tional Academy of Sciences, 391Cancer, W. P. JORISSEN and A. H. BELINFANTE, 13CAREY, C. L., and S. A. WAKSMAN, Nitrifying Bacteria

in Deep Seas, 349Carnegie Grants to Colonial Museums, 402a-earotene, A Rich Source of, W. L. BROWN, 481Carotenes, The Separation of, H. H. STRAIN, 325Carotenoid Pigments and Plants, A. E. MURNEEK, 528Carotenoids, Nomenclature for, L. S. PALMER, 488CASEY, A. E., P. D. ROSAHN, C. K. Hu and L. PEARSE,Blood Cytology of Normal Rabbits, 189

Cataract in Amblystoma tigrinum, E. M. PATCH, 57Cats, Motor Conditioning in, E. CULLER, G. FINCH and

E. GIRDEN, 525; Adrenalectomized Depancreatized, C.N. H. LONG and F. D. W. LUKENS, 569

Cell Masses, C. W. BROWN and F. M. HENRY, 457Cerebral, Cortex, Vasomotor Representation in, M. A.KENNARD, 348; Action Currents, F. T. PERKINS, 418

Chemical, Abstracts, 154; Soc., Amer., 198, 224; Ele-ments, R. W. THATCHER, 463; Reactions, Encyclopediaof, C. A. JACOBSON, 541

Chemistry, Pure and Applied, Int. Congress, 518Chemists, Longevity of, 266Chicago, Field Conference on Earth History, 336; Univ.

of, Collection of Maps, 176Chicks, Disease in, R. CRIBBETT and J. T. CORRELL, 40CHIPMAN, W. A., JR., Culture Medium for Cladocerans,

59Chlorophyl and Hemoglobin Formation, 0. S. ORTH, G.

C. WICKWIRE and W. E. BURGE, 33Chromatophores, G. H. PARKER, 428Cigarette Smoking and the Blood Sugar, H. W. HAGGARDand L. A. GREENBERG, 165

CLARK, A. H., Work of the Press at the American Asso-ciation, 141; A Voracious Starfish, 432

CLARK, G. L., W. J. WARREN and W. H. SMITH, X-RayDiffraction Studies, 433

CLARK, N. A. and B. H. THOMAS, Mieroorganisms andVitamin Production in Green Plants, 571

CLELAND, J. B., Expedition to South Australia, 295COCKERELL, T. D. A., What is a Locust?, 481Code for Chemists, H. H. BuNZELL, 341Codes and Professional Service, W. M. GROSVENOR, 317COHN, E. J., Ions, Zwitterions and Molecules, 83COKER, R. E., Temperature and Copepods, 323Cold Spring Harbor Symposia on Biology, 584COLE, E. C., Methylene Blue and the Earthworm, 163COLE, K. S., Direct Current Excitation of Nerve, 164COLE, L. J., Government Research, 204Colloidal Systems and Probability, M. MATTIKOW, 589Colorado-Wyoming Acad. of Science, R. J. GILmoRE, 187Color-blindness among the Chinese, L. G. KILBORN and

Y. T. BEH, 34Colorimeter, Photo-electric, A. WEIL, 593Coniferous Climax, Northwest, I. T. HAIG, 58Conservation Work, Emergency, 27COOLIDGE, W. D., Organized Industrial Research, 129COPELAND, H. P., Botanical Nomenclature, 11Copepods and Temperature, R. E. COKER, 323Copper, Determination of Minute Amounts of, H. W.MOSELEY, A. G. ROHWER and M. C. MOORE, 507

Corn, Physoderma Disease of, F. K. SPARROW, JR., 563CORNWELL, W. S., Nervous Systems, 162Correction, M. M. METCALF, 506CORRBESPONDENT, Disgrace of German Science, 386Cox, H. R. and P. K. OLITSKY, Encephalomyelitis, 459CRAFTS, A. S., Thallium Sulfate upon Soils, 62Crayfish, North American, E. P. CREASER, 364CREASER, C. P., North American Crayfish, 364CRIBBETT, R. and J. T. CORRELL, Disease in Chicks, 40CULLER, E., G. FINCH and E. GIRDIER, Motor Conditioning

in Cats, 525Culture, Medium for Cladocerans, W. A. CHIPMAN, JR.,

59; Method for Daphnia, R. M. BOND, 60

DAHLGREN, U., Contraction in Striated Muscle, 300;Freshwater Bryozoon, 510

DaiTy Science, Assoc., and Geneva Exp. Station, 535D'AMOUR, F. E., Sex Ratio in Rats, 61DANFORTH, C. H., Genetics and Anthropology, 215DAVENPORT, C. B., Schwesinger's Heredity and Environ-ment in Man, 185

DAVIS, W. H., Automobile and Wild Life, 504Davis, William Morris, D. JOHNSON, 445DAWSON, B. H., It Happened in Argentina, 505Deciduous Fruit Trees, Infected, R. B. STREETS, 417DEMPSTER, A. J., Mass Spectra and Isotopes, 297Dental Caries, I. NEUWIRTH and P. BRANDWEIN, 36DEUBER, C. G., Methylene Blue and Gassed Plants, 389Deuterium, Para-Ortho Conversion of, A. FARKAS, L.FARKAS and P. HARTECK, 204; Oxide and Aspergillus,S. L. MEYER, 210; the Case of, C. E. WATERS, 271

DEWEY, J., The Supreme Intellectual Obligation, 240Diabetes, Solanum Indicum in, I. S. KLEINER, 273Diffraction Studies, X-ray, G. L. CLARK, W. J. WARRENand W. H. SMITH, 433

DILLER, W. F., Autogamy in Paramecium aurelia, 57Dilutions in the Laboratory, C. J. LYON, 60Diploneura Nitidula Meigen, J. A. MULLEN, 294DUERDEN, J. E., Spirality in Wool Fibers, 477DUFFORD, R. T., Missouri Acad. of Science, 542DUFTON, A. F., Graphic Statistics, 564DULEY, F. L., New Type of Broad Base Terrace, 301DUNCAN, D., Diameter as a Factor in Myelination, 363Dust, Storm, E. H. WATSON, 320; Cloud, Destructive, 473

Earthworm and Methylene Blue, E. C. COLE, 163Eclipse, Radio Observation of, 5Ecology of the Prairie, P. RAMALEY, 504EDINGTON, W. E., Indiana Academy of Science, 186ELDERFIELn, R. C. and W. A. JACOBS, Strophanthin, 279Electrical, Engineers, Amer. Inst., Officers, 133Electro-Radio-Biology, Congress of, 334ELLIS, J. W. and B. W. SoRGE, Infra-red Absorption of

Water, 370Elm Disease, Dutch, 516Encephalitis, L. T. WEBSTER and G. L. FITE, 254Encephalomyelitis, Experimental Equine, H. R. Cox and

P. K. OLITSKY, 459Endamoeba Histolytica, D. H. WENRICH, R. M. STABLERand J. H. ARNETT, 143

Endergic and Exergic Reactions, W. BLUM, 84, 273Endocrine Extracts, W. R. BRENEMAN, 434Endospore Formation, J. L. ROBERTS, 432Engineering, Scientific, Approach to Civilization, H.WALLACE, 1; Education, Soc. for Promotion of, 6;Civil, Government Appointments of Syracuse Univ., 473

Entomological, Work, Government Appropriations for,C. L. METCALF and E. F. PHILLIPS, 253; Soc., Texas,367; Collections, Steel Case for, J. A. G. REHN, 568

Ergograph, Simple, S. SOSKIN, 593ERWIN, A. T., Zea Mays var. saccharata, 589Ethnology and Anthropology, Congress, 557Exergic and Endergic Reactions, W. BLUM, 84, 273Exiles in British Sanctuary, LORD RUTHERFORD, 533Expansion and Contraction, F. B. SUMNER, 11Extractor for Fluid Systems, W. F. BRUCE, 253

iv SCIENCE

# SCIENCE

EZEKIEL, W. N. and J. J. TAUBENHAUS, Soil Fungicidesand Phymatotrichum Root Rot, 595

F., C. N., Henry Stephens Washington, 47FAIRCHILD, H. L., "Guns" of Seneca Lake, 340FARKAS, A., L. FARKAS and P. HARTECK, Para-Ortho

Conversion of Deuterium, 204FARQUHAR, S. T., Use of Permanent Paper, 522FARRIS, E. J., Mounting Ground Bone Sections, 433Fellowships, Nat. Research, in Biological Sciences, 357,

498; Sterling, at Yale Univ., 474FELTON, L. D., Pneumococcus Antibodies, 277FERNALD, M. L., Differentiation in Plants, 573FERRIS, G. F., Plant Quarantines in California, 13FICKLEN, J. B., Isotopic Nomenclature, 140Field Museum, 424; Guatemala Expedition, 558Fink, Colin G., Perkin Medal Award, 28Fisheries, National Planning Council, 472FITCH, A. L., Optical Phenomena, 386FITZ, G. W., A Micro-manipulator, 233Fixing Carbon Copies, A. F. RoE, 210FLE2xNER, S., William H. Welch, 529Flies, Growth of Empusa on, W. A. HIESTAND, 160Foraminiferal Shells, L. G. HJNBEST, 363FORD, W. W., Magnification, 578Forest Holdings, 335; Reservation, 583FOSTER, A. S., Angiosperms, 429Fox, D. L., Hydrocyanic Acid, 37; Bio-hydraulic Activi-

ties, 292FOYES, E. J., Topogeologic Models, 142Franklin Institute, Medal Meeting, 450FREER, R. S., Virginia' Society of Ornithology, 368Frogs and Opalinidae, M. M. METCALP, 213FULTON, R. A. and J. C. CHAMBERLIN, Artificial Feeding

of the Beet Leafhopper, 346Fusarium Bactridioides, H. W. WOLLENWEBER, 572

Gardenia, Canker Disease of, H. N. HANSEN and C. E.ScorT, 18

GAUSE, G. F., Vito Volterra's Struggle, 16Gelatin Film Culture, A. KOZLOWSKI, 507Genetics and Anthropology, C. H. DANFORTH, 215Geneva Experiment Station and American Dairy Science

Association, 535Geographers, Amer., Assoc. of, 28Geographie Players, Inc., 49Geographical, Congress, International, D. JOHNSON, C. F.MARBUT and W. L. G. JOERG, 161; Soc., Royal Scottish,Jubilee, 285

Geography, Reference Work on, D. JOHNSON, 305Geological, Conference, Tri-State, J. M. WELLER, 80;

Soc. of Amer., 134Geologists, Pennsylvania, Fourth Conference, 517German, Medical and Scientific Periodicals, Cost of, 6,

C. IL BROWN, 250; B. A. SOULE, 542; Sholars, Dis-placed, 153; Science, Disgrace of, CORRESPONDENT, 386;C. D. SNYDER, 432; Men of Science and Physicians,Assoc. of, 583

GESELL, R., An Interrupted Signal, 275Gestation Period of the Rabbit, P. D. ROSAHN, H. S. N.GREENE and C. K. Hu, 526

GILMAN, J. C., Iowa Aeademy of Science, 543GILMORE, R. J., Colorado-Wyoming Acad. of Sci., 187GINSBURG, J. M., Soap as Larvicide, 210Glaciers, in Alaska, H. B. WASHBURN, JE., 249; of Moun-

tain and Continent, W. H. HOBBS, 419GLENK, R., New Orleans Academy of Sciences, 367Glutathione, from Yeast, A. KOZLOWSKI, 388; Function

of, F. S. HAMMETT, 457Godman Fund, Work of, 222GOLDWATPER, S. S., All-Union Inst. of Exp. Medicine, 206GOODRICH, H. B., and R. N. MERCER, Fighting Fish, 318GORTNER, R. A., Hydrogen and Oxygen Isotopes, 203Gossypol and Discoloration of Egg Yolks, P. J. SCHAIBLE,

L. A. MOORE and J. M. MOORE, 372

Granitic and Basaltic Shells, A. N. WINCHELL, 32Graphic Statistics, A. F. DUFTON, 564Gravity Stations on the Nile Delta, W. Bowin, 410Great Britain, Fellowships, 243; Industry and Research

Associations of, 423GREENE, H. S. N., C. K. Hu and W. H. BROWN, LethalDwarf Mutation in the Rabbit, 487

GRIGGS, D. T., Experiment on Fatigue in Insolation, 319GROSVENOR, W. M., Professional Services and Codes, 317Group, Mathematical Term, G. A. MILLER, 291Grunsky, Carl Ewald, G. D. HANNA, 556Guggenheim Foundation, Awards of, 411"Guns" of Seneca Lake, H. L. FAIRCHILD, 340; A. G.INGALLS, 479; G. R. WIELAND, 524

HACKH, I. W. D. and E. H. WESTLING, Old Age, 231HAGGARD, H. W. and L. A. GREENBERG, Cigarette Smok-

ing and the Blood Sugar, 165, 274HAIG, I. T., The Northwest Coniferous Climax, 58Hainan, Expedition to, T.-H. SHAW, 295HAMMETT, F. S., Function of Glutathione in Growth, 457HANNA, G. D., Carl Ewald Grunsky, 556HANSEN, H. N. and C. E. ScoTr, Canker Disease of Gar-

denia, 18HARKINS, W. D., Isotopes of Hydrogen, 138HARRINGTON, H. D., and R. W. POULTER, Foot-focussing

Device for Microscope, 368HARRIS, M. M. and E. BRAND, Sex Cycle in Male, 364HARRow, B., The "Fat-metabolism " Hormone, 272;Who Pays Reparations?, 410

Haematoxylin, Delafield's, H. W. NEILD, 209HEARN, J. E., Calibration Method, 458Heavy Water, and Royal Society, 26; Raman Spectrum,

R. W. WooD, 35; G. N. LEwIS, 151; of Low Concentra-tion, and Euglena, T. C. BARNES, 370; in Water fromDeep Wells, A. F. SCOTT, 565

HENBEST, L. G., Foraminiferal Shells, 363HENDERSON, V. E. and D. T. FRASER, Report of the Trus-

tees of the Banting Research Foundation, 232HENDERSON, Y., A. W. OUGHTERSON, L. A. GREENBERGand C. P. SEARLE, Circulation of the Blood, 508

Herpes-Encephalitis, Virus of, and Inseet Transmission,J. S. SIMmoNS, R. A. KELSER and V. H. CORNELL, 540

Hess, Alfred Fabian, 70HETHERINGTON, A., Pure Culture of Paramecium, 413HIESTAND, W. A., Growth of Empusa on Flies, 160HITCHCOCK, A. S., Taxonomy and Research, 407HOBBS, W. H., Glaciers of Mountain and Continent, 419HOLLAND, E. B. and C. P. JONES, Moisture in Unstable

Products, 526HOLLANDER, L., Amylase System of Liver, 17HOLMES, H. N., H. CASSIDY, E. HARTZLER and R. MANLY,Attempt to Isolate Vitamin A, 255

HooiKER, M., A New Method of Illustration, 82HOPKINS, S. H., Pearl Formation, 385Hormone, "Fat-metabolism," B. HARROW, 272HOUGHTON, H. S., Medieal Education, 491HOWARD, L. O., Termites, C. A. Kofoid, 296Humanities, Trends in, W. G. LELAND, 281HUMPHREYS, W. J., "Sinking" of Lake Ice, 562Hunan-Yale Public Health Project in Changsha, 244HUNTER, W. S., Control of Behavior, 145Hydrocyanic Acid, D. L. Fox, 37Hydrogen, Heavy, 26; R. W. WOOD, 35; W. D. HARKINS,

138; J. B. FICKLEN, 140; G. M. LEWIS, 151; W. A.BOUGHTON, 159; R. A. GORTNER, 203; A. FARKAS, L.FARKAS and P. HARTECK, 204; S. L. MEYER, 210; R. S.MULLIKEN, 228; C. E. WATERS, 271; H. S. TAYLOR,303; T. C. BARNES, 370; A. F. SCOTT, 565

Hydrogen-ion Concentration, C. ZINZADZt, 480Hygiene, John G. Pierce Laboratory of, 198

Ice, Lake, "Sinking" of, W. J. HUMPHREYS, 562Illustration, New Method, M. HOOKER, 82Immunity, Tissue Reactions in, R. L. KAHN, 172

NEW SERIES. 1VOL. LXXIX.

[CONTENTS ANDINDEX.

Imposter, An, C. P. SIGERFOOS, 184India, and American Science, B. BONNERJEA, 343Indiana Acad. of Science, W. E. EDINGTON, 186Infra-red Absorption of Water, J. W. ELLIS and B. W.SORGE, 370

INGALLS, A. G., " 'Guns' of Seneca Lake," 479Inorganic Syntheses, 7Insects, Protective Resemblances, W. L. McATEE, 361Insolation, Fatigue in, D. T. GRIGGs, 319Ions, Zwitterions and Molecules, E. J. COHN, 83Iowa Academy of Science, J. C. GILMAN, 543Irene, M. T. BoGERT and P. M. APFELBAUM, 280Isotopes, of Hydrogen, W. D. HARKINS, 138; Terminol-

ogy of, TERMINOLOGIST, 505Isotopic, Nomenclature, J. B. FICKLEN, 140; Fractiona-

tion of Water, E. W. WASHBURN and E. R. SMITH,188; E. R. SMITH, 454; 002 and 02 in Plants, A.MOLDAVAN, 455

JACKSON, D. C., Charles Proteus Steinmetz, 511JACOBSON, C. A., Encyclopedia of Chem. Reactions, 541JOHNSON, D., Reference Work on Geography, 305; Wil-

liam Morris Davis, 445; C. F. MARBUT and W. L.JoEnG, International Geographical Congress, 161

JOHNSON, G. E., Kansas Academy of Science, 544JONES, L. R., Plant Virus Disease, 385JORISSEN, W. P. and A. H. BEIiNFANTE, Cancer, 13

KAHN, R. L., Tissue Reactions in Immunity, 172Kansas Acad. of Science, G. E. JOHNSON, 544KARLING, J. S., Sporangia of Cladochytrium, 390KENNARD, M. A., The Cerebral Cortex, 348KENNELLY, A. E,. Goerge Owen Squier, 470KILBORN, L. G., and Y. T. BEH, Color-blindness among

the Chinese, 34KLEINER, I. S., Solanum Indicum in Diabetes, 273KOzLOWSKI, A., Isolation of Glutathione from Yeast, 388;A Gelatin Film Culture, 507

KRAMER, P. J., Absorption of Water by Plants, 371Kurth, Edward Houghton, 333

Laboratory Fees, 0. E. SnEPPARD, 342LAURITSEN, C. C., H. R. CRANE and W. W. HARPER,

Artificial Production of Radioactive Substances, 234LAURImEN, C. W., Soil-plant Relationships, 187LEIKIND, M. C., History of Science Movement, 209LEITCH, J. L., Western Soc. of Naturalists, 208LELAND, W. G., Trends in the Humanities, 281Lethal Dwarf Mutation in the Rabbit, H. S. N. GREENE,

C. K. Hu and W. H. BROWN, 487LEWIS, G. N., Heavy Water, Biology of, 151LIGHT, R. U. and E. L. CHAPFEE, Electrical Excitation

of the Nervous System, 299Lightning, Protection, J. B. WHITEHEAD, 183; J. ZFLENY,

269; H. SKILLING, 293; E. P. WIGHTMAN, 524Linear Units, Small, G. W. WARNER, 590LIPMAN, C. B., Longevity of Bacteria, 230Liquids, Constant Flow of, J. H. WALES, 545LIST, G. M. and L. B. DANIELS, Psyllid Yellows of Pota-

toes, 79Liver, Amylase System of, L. HOLLANDER, 17Locust, What Is It?, T. D. A. COCKERELL, 481LONG, C. N. H. and F. D. W. LUKENS, Adrenalectomized

Depancreatized Cats, 569LYON, C. J., Dilutions in the Laboratory, 60Lysozyme Action, K. MEYER, R. THOMPSON, J. W. PAL-MER and D. KHORAZO, 61

McATEE, W. L., Resemblances in Insects, 361MCCLENDON, J. F., Weights and Measures, 183; Chinese

Medicine., 503McDANIELs, H. E., Stain for Nuclear Structures, 187MAcFARLAND, W. E., Respirator for Small Animals, 369McGILL, J. T., Tennessee Acad. of Science, 5.06Magnification, W. W. FORD, 578

MAIL, G. A., Reaction to Mosquito Bites, 140MANWARING, W. H., Transformation of Bacteria, 466MANWELL, R D., Avian Malarial Infections, 544MAST, S. O., Pigment Granules in Chromatophores, 249Matas, Rudolph, Award, 51Mathematics, Professors, of, at Univ. of Wisconsin, inHonor of, 74

MATTIKOW, M., Colloidal Systems and Probability, 589Medical Education, H. S. HOUGHTON, 491Medicine, Experimental, All-Union Institute of, S. S,

GOLDWATER, 206; Chinese, J. F. MCCLENDON, 503Meldrum, A. N., 333Melilotus, Non-bitter Variety of, R. A. BRINK, 301Melting Point Diagrams, R. F. NEWTON, 321Memorial Hospital, New York City, 499MENKIN, V., Experimental Tuberculosis, 211MERRIAM, J. C., Science and Conservation, 496MERRILL, P. W., Invisible Starlight, 19MESERVE, F. G. and M. J. KENNEY, Effeets of X-Rays

on Planaria dorotocephala, 408METCALF', C. L. and E. F. PHILLIPS, Government Appro-

priations for Entomological Work, 253METCALF, M. M., Frogs and Opalinidae, 213; A Correc-

tion, 506; Muscular Activity after Paralysis, 591METFESSEL, M., Strobophotography in Bird Singing, 412Methylene Blue and Gassed Plants, C. G. DEUBER, 389MEYER, K., R. THOMPSON, J. W. PALMER and D. KHO-

RAZO, Lysozyme Action, 61MEYER, K. F. and B. EDIE, Psittacosis, 546MEYER, S. L., Deuterium Oxide and Aspergillus, 210Michigan, Univ. of, Symposium in Physics, 357Micro-manipulator, G. W. FITZ, 233Microscope, Foot-focussing Device for, H. D. HARRINGTON

and R. W. POULTER, 368Microscopes, Adjustable Stage for, F. W. MILLER, 388MILLER, E. C. L., Virginia Academy of Science, 565MILLER, F. W., Adjustable Stage for Microscopes, 388MILLER, G. A., Mathematical Term Group, 291Milton and Clark Awards, 365MINER, N. A., Slopes of the Gasp6 Peninsula, 229Missouri Academy of Science, R. T. DuFnoRD, 542Moisture in Unstable Products, E. B. HOLLAND and C. P.

JONES, 526MOLDAVAN, A., Isotopic CO2 and 02 in Plants, 455Molecular Weight Analysis, T. SVEDBERG, 327Moodie, Roy Lee, W. A. B., 263MOORE, C. E.) H. D. BABCOCK and C. C. KIESS, The Pres-

ence of Phosphorus in the Sun, 390MORGAN, W. W., Ionized Argon in the Spectrum of Upsi-

lon Sagittarii, 454MOSELEY, H. W., A. G. ROHWER and M. C. MOORE, De-

termination of Minute Amounts of Copper, 507Mosquito Bites, Reaction to, G. A. MAL, 140Mounting Ground Bone Sections, E. J. FARRIS, 433MULLEN, J. A., Diploneura Nitidula Meigen, 294MULLIKEN, R. S., Hydrogen Isotopes, 228Multiple Proportions, Law of, E. A. VUILLEUMIER, 13; A.

ROSE, 205MURNEEK, A. E., Carotinoid Pigments, 528Muscle, Striated, Contraction in, U. DAHLGREN, 300Museums, Amer., Assoc. of, Toronto Meeting, 288;

British Colonial and Dominion, Carnegie Grants, 402Music, Primitive, C. E. and H. SEASHORE, 485Myelination, Diameter as Factor in, D. DUNCAN, 363

Names, Change of, B. BROWN, 80National, Research Council, Grants-in-Aid, I. BOWMAN,

58, 566; Delegates to Congress at Madrid, 313; Fel-lowships, 498; Acad. of Sciences, 373, Elections, 404,Abstracts, of Papers at the Washington Meeting, 373,435, 460, 484, Medals and Honoraria of, 551

Naturalists, Western Soc. of, J. L. LEITCH, 208NEILD, H. W., Delafield's Haematoxylin, 209Nerve, Direct Current Excitation of, K. S. COLE, 164

vi SCIENCE t

NEW SERIES. 1VOL. TXXIX.

Nervous Systems, W, S. CORN WELL, 162; Electrical Ex-citation of, R. U. LIGHT and E. L. CHAFFEE, 299

Neutron, A. BRAmLEY, 160NEuWIRTH, I. and P. BRANDWEIN, Dental Caries, 36New Hampshire Acad. of Science, G. W. WHITE, 592New Orleans Academy of Sciences, R. GLENK, 367New York, Experiment Station at Geneva, 73; Planning

Board, 245; Zoological Soc., Expedition, 498Newark Museum, Industrial Chemistry at, 73NEWTON, R. F., Melting Point Diagrams, 321NININGER, H. H., "When the Sky Rains Stone," 410Nomenclature, Botanical, H. F. COPELAND, 11NoRD, F. F., Biochemistry of Anesthesia, 159North Carolina Acad. of Science, H. L. BLOMQUIST, 592

Obligation, Supreme Intellectual, J. DEWEY, 240OGBURN, W. F., Trends in Social Science, 257Ohio Academy of Science, W. H. ALEXANDER, 566Old Age, I. W. D. HACKH and E. H. WESTLING, 231Optical Phenomenon, A. L. FITCH, 386Ornithology, Virginia Society of, R. S. FREER, 368ORTH, 0. S., G. C. WICKwIRE and W. E. BURGE, Chloro-

phyl and Hemoglobin Formation, 33OSBORN9, H. F., Aristogenesis, 41Osteomyelitis Wounds, Larvae in, M. A. STEWART, 459Oxidation-reduction Reactions, C. H. BEHRE, JR. and R.K. SUMMERBELL, 39

Paleontological Research Institute at Ithaca, 380Paleozoic, Rocks of New Hampshire, M. BILLINGS, 55;

Plant Genera, Age of, D. WHITE, 77.PALMER, L. S., Nomenclature for the Carotenoids, 488Pan American Medical Association, 312PAPISH, J. and A. C. SHUMAN, Beyond Uranium, 297Paralysis, Muscular Activity after, M. M. METCALF, 591Paramecium, Pure Culture of, A. HETHERINGTON, 413;

trichium, Clockwise Rotation in, A. N. BRAGG, 524PARKER, G. H., Chromatophores, 428Parks, National, 245; New York, 356Parselenic Circle, H. T. STETSON, 542PATCH, E. M., Cataract in Amblystoma tigrinum, 57Pathogen, Tomato, in the U. S., G. B. RAmSEY, 294Pearl Formation, S. H. HOPKINS, 385PEARSE, A. S., Ecological Segregation, 167Peat Investigations, 449Pennsylvania Aead. of Science, 544Perkin Medal, Award to C. G. Fink, 28PERKINS, F. T., Cerebral Action Currents, 418Permanent Paper, Use of, S. T. FARQUHAR, 522PHIFER, L. D., Phytoplankton Collection, 298Philippine Islanda, National Research Council of, 559Philosophical Soc., Amer., 381; Grants of the, 387Phosphorus, Presenee of, in the Sun, C. E. MOORE, H. D.BABCOcK and C. C. KIESS, 390

Photographic Survey, Aerial, 51Physical, Soc., London, Exhibit, 72; Amer., California

Meeting, 536; Sciences, W. L. BRAGG, 237Physics, College, Survey, 26; Chemical, Conferences on,

176; X-Ray, D. L. WEBSTER, 191; Einstein Inst., 214,at British National Laboratory, 516

Phytoplankton Collection, L. D. PHIFER, 298Pigment Granules in Chromatophores, S. 0. MAST, 249Planetarium, Amer. Museum Natural History, 27Plant, Quarantines, G. F. FES,- 13; Growth and X-Rays,

F. SKooG, 256; Virus Disease, L. R. JONES, 385Plants, Drought Resistance in, H. L. SHIRLEY, 14; Ab-

sorption of Water by, P. J. KRAMER, 371; Differentia-tion in, M. L. FENALD, 573

Plotz, Ella Sacks, Foundation, 320Pneumococcus Antibodies, L. D. FELTON, 277Poison Ivy and Guinea Pigs, F. M. RACKEMANN and F.

A. SIMON, 344Poisons and Disease, J. J. ABEL, 63, 121Poliomyelitis, Immunization Against, M. BRODIE, 594,

Transmission of the Virus of, A. R. ELvIDGn, 235Polymerization of Olefins, F. C. WHITMoRE, 45

Poos, F. W., and H. L. WESTOVER, "Alfalfa Yellows, "319

Potato, Starchless, R. F. SUIT and H. HIBBERT, 78Potatoes, Psyllid Yellows, G. M. LIST and L. B. DAN-

IELS, 79Preservation of Records, 176Princeton Univ., Expeditions, 287Probits, Method of, C. I. BLISS, 38, 409Professional Services, vs. "Laboratory Industry," J.ALEXANDER, 523

Proteins, Synthesis of, M. BERGMANN, 439Protozoa, Free-living, Fixing, J. T. Baldwin, JR., 143Psittacosis, K. F. MEYER and B. EDDIE, 546Psychological Assoc., Amer., N. Y. Branch, 312Puerto Rico, Fishery Survey in, 356

R., P., Homer Collar Skeels, 49RACKEMANN, F. M. and F. A. SIMON, Guinea Pigs and

Poison Ivy, 344Radiation, High Frequency Sound, Virucidal Action of,W. N. TAKAHASHI and R. J. CHRISTENSEN, 415

Radioactive Substances, Artificial Production of, C. C.LAURITSEN, H. R. CRANE and W. W. HARPER, 234

Rainbow Bridge Monument Valley Expedition, 449RAMALEY, F., Ecology of the Prairie, 504RAmSEY, G. B., A Tomato Pathogen in the U. S., 294RATCLIFFIE, H. L., and Q. M. GEIMAN, Amebiasis in Rep-

tiles, 324Rats, Sex Ratio in, F. E. D 'AmoupR, 61RECORD, S. J., Terms Used in Describing Woods, 56REHN, J. A. G., Steel Case for Entomologists, 568Relay, Efficient, P. T. BLACK, 322Reparations, B. HARaow, 410Reptiles, Amebiasis in, H. L. RATCLIFPE and Q. M. GEI-MAN, 324

Research, Industrial, Organized, W. D. CooLIDGE, 129;Government, L. J. COLE, 204; in Yale Graduate School,231; Fellowships, Leverhulme, in Great Britain, 243;and Industry Associations of Great Britain, 423

Respiration of Rhizobium, R. H. WALKER, 160Respirator for Small Animals, W. E. MCFARLAND, 369Respiratory Diseases of Chickens, Etiology of, 0. W.SCHALM and J. R. BEACH, 416

ROBERTS, J. L., Endospore Formation, 432ROE, A. F., Fixing Carbon Copies, 210ROEDER, K. D., Measuring Small Time Intervals, 82ROSAHN, P. D., H. S. N. GREENE and C. K. Hu, Gesta-

tation Period of the Rabbit, 526ROSE, A., Multiple Proportions, 205Rotation of the Earth, C. G. ABBOT, 454Rothameted Experimental Station, 334Royal Society, Conversazione, 497RUTHERFORD, LoaD, Exiles in British Sanctuary, 533Sabouraud Medium, Modified, S. A. SCUDDER, 16Salmon, Thomas William, 131Scarps in Tularosa Valley, S. B. TALMAGE, 181SCHAIBLE, P. J., L. A. MooRn and J. M. MOORE, Gossypoland Discoloration of Egg Yolks, 372

SCHALM, 0. W. and J. R. BEACH, Etiology of a Respira-tory Disease of Chickens, 416

SCHULTZ, A. H., Zuckerman on Apes and Men, 185Science, Movement, History of, M. C. LEIKIND, 209; and

Conservation, J. C. MERRIAM, 496Scientific, Work, Appropriations, 28; News Items, E. T.WHERRY, 184; Workers, British Assoc. of, 380

Scientists, The Courage of, C. D. SNYDER, 432ScoTT, A. F., Heavy Water in Water from Oil Wells, 565SCUDDER, S. A., A Modified Sabouraud Medium, 16SEASHORE, C. E. and H. SEASHORE, Phonophotography inStudy of Primitive Music, 485

Sedgwick Memorial Lecture, 41Segregation, Ecological, A. S. PEARSE, 167Seneca Lake, "Guns" of, H. L. FAIRCHILD, 340; A. G.INGALLS, 479

Sex Cycle, in Male, M. M. HARRIS and E. BRAND, 364SHANTz, H. L., Botanical Research, 351

SCIENCE v*

L CONTENTS ANDINDEX.

Sharks, Permian, C. C. BRANSON, 431SHAW, T.-H., Expedition to Hainan, 295Shepard, Edward M. 1854-1934, P. C. STANDLEY, 582SHEPPARD, 0. E., Laboratory Fees, 342SHIRLEY, H. L., Drought Resistance in Plants, 14Siamese Fighting Fish, H. B. GOODRICH and R. N. MER-

CER, 318SIGERFOOS, C. P., An Imposter, 184Signal, Interrupted, R. GESELL, 275SIMMONS, J. S., R. A. KELSER and V. H. CORNELL,Herpes-Encephalitis Virus, and Insect Transmission, 540

Skeels, Homer Collar, P. R., 49SKILLING, H., Antecedent Lightning Protection, 293Skin Temperature Reactions, R. ZOLLINGER and M. T.

SCHNITKER, 540SKOOG, F., X-rays and Plant Growth, 256Smith College, Student Scientific Conference, 287SMITH, E. R., Isotopic Fractionation of Water, 454SNYDER, C. D., The Courage of Scientists, 432Soap as Larvicide, J. M. GINSBURG, 210Social Science, Trends in, W. F. OGBURN, 257Soil Fungicides and Phymatotrichum Root Rot, W. N.EZEKIEL and J. J. TAUBENHAUS, 595

Soil-plant Relationships, C. W. LAURITZEN, 187Soils, Thallium Sulphate upon, A. S. CRAFTS, 62SOSKIN, S., Simple Ergograph, 593SOULE, B. A., Cost of German Publications, 542SPARROW, F. K., JR., Physoderma Disease of Corn, 563Spectroscopy, Research Conference on, 287SPIRA, J. I., Mortality among Tropical Fish, 140Spirality in Wool Fibers, J. E. DUERDEN, 477Sporangia of Cladochytrium, J. S. KARLING, 390Squier, George Owen, A. E. KENNELLY, 470Stain for Nuclear Structures, H. E. MCDANIELS, 187Standards, U. S. Bureau of, 380STANDLEY, P. C., Edward M. Shepard, 1854-1934, 582Starfish, Voracious, A. H. CLARK, 432Starlight, Invisible, P. W. MERRILL, 19Steinmetz, Charles Proteus, D. C. JACKSON, 511STETSON, H. T., The Parselenic Circle 542STEWART, M. A., Larvae in Osteomyelitis Wounds, 459SRAIN, H. H., The Separation of Carotenes, 325Stratosphere Flights, 132Stream Surveys in the National Parks, 245STREETS, R. B., Infected Deciduous Fruit Trees, 417Strobophotography in Bird Singing, M. MwFESSEL, 412Strophanthin, R. C. ELDERIELD and W. A. JACOBS, 279SUIT, R. F. and H. HIBBERT, Starchless Potato, 78SUmNER, F. B., Expansion and Contraction, 11SVEDBERG, T., Molecular Weight Analysis, 327Syraeuse Univ., Appointments in Civil Engineering, 473

TAKAHASHI, W. N. and R. J. CHRISTENSEN, VirucidalAction of High Frequency Sound Radiation, 415

TALMAGE, S. B., Scarps in Tularosa Valley, 181Talus Slopes of the Gasp6 Peninsula, N. A. MINER, 229TAYLOR, H. S., Heavy Hydrogen, 303Telescope Mirror, 286; at Greenwich, 557Templeton Crocker Expedition to Solomon Islands, 344Tennessee Acad. of Science, J. T. McGILL, 506TERMINOLOGIST, Terminology of Isotopes, 505Terrace, Broad Base, New Type of, F. L. DULEY, 301Texas Entomological Society, 367THATCHER, R. W., iChemical Elements, 463Thermostat, Gas, A. J. BAILEY, 277THOM, C. and C. M. JACKSON, Howard Ayers, 515THOMPSON, J. O., The Time Constant, 479THOMSON, D. L., Tobacco Smoking and Blood Sugar, 386Time, Intervals, Small, Measuring, K. D. ROEDER, 82;

Constant, J. 0. THOMPSON, 479Tobacco Mosaic Virus, C. G. VINSON, 548Topogeologic Models, E. J. FOYLES, 142Trihydrol, Effect of, in Liquid Water, T. C. BARNES, 455Tropical, Fish, Mortality, J. I. SPIRA, 140; Medicine,Amer. Acad. of, 154, 425

Tuberculosis, Experimental, V. MENKIN, 211Type Culture Collection, American, 336Uranium, Beyond, J. PAPISH and A. C. SHUMIAN, 297VARRELMAN, F. A., The U. S. Botanic Garden, 206VINSON, C. G., Tobacco Mosaic Virus, 548Virginia Acad. of Science, E. C. L. MILLER, 565Vitamin, Production in Green Plants, and Microorgan-

isms, N. A. CLARK and B. H. THOMAS, 571; H. N.HOLMES, H. CASSIDY, E. HARTZLER and R. MANLY, 255

Vito Volterra's Struggle, G. F. GAUSE, 16VUILLEUMIER, E. A., Law of Multiple Proportions, 13WALES, J. H., Constant Flow of Liquids, 545WALKER, R. H., Respiration of Rhizobium, 160WALLACE, H. A., Engineering-Scientific Approach to

Civilization, 1WARD, H. B., American Association for the Advancement

of Science, Boston Meeting, 85; Berkeley Meeting,396; Minutes of the Executive Committee, 481; Rob-ert Henry Wolcott, 422

WARNER, G. W., Small Linear Units, 590WARREN, E. R., Where Did This Really Happen?, 79Warren, Howard Crosby, M. F. WASHBURN, 48WASHBURN, E. W. and E. R. SMITH, The Isotopic Frae-

tionation of Water, 188Washburn, Edward Wight, L. J. BRIGGS, 221WASHBURN, H. B., JR., Glaciers in Alaska, 249WASHBURN, M. F., Howard Crosby Warren, 48Washington Academy of Sciences, Officers, 134Washington, Henry Stephens, C. N. F., 47WATERS, C. E., The Case of Deuterium, 271WATSON, E. H., Dust Storm, 320Weather Forecast Program, 424WEBSTER, D. L., X-Ray Physics, 191WEBSTER, L. T. and G. L. FITE, Ehieephalitis, 254Weights and Measures, J. F. MCCLENDON, 183WEIL, A., Photo-electric Colorimeter, 593Welch, William H., 345; S. FLEXNER, 529WELLER, J. M., Tri-State Geological Field Conference, 80WENRICH, D. H., R. M. STABLER and J. H. ARNETT,Endamoeba Histolytica, 143

Where Did This Really Happen?, E. R. WARREN, 79WHERRY, E. T., Two Scientific News Items, 184WHITE, D., Age of Paleozoic Plant Genera, 77WHITE, G. W., New Hampshire Acad. of Science, 592WHITE, G. W., Soil Minerals and Wisconsin-Illinoian

Drift Boundary, 549WHITEHEAD, J. B., Lightning Protection, 183WHITMORE, F. C., Polymerization of Olefins, 45WIELAND, G. R., The "Guns" of Seneca Lake, 524WIGHTMAN, E. P., Strokes of Lightning, 524Wild-life, Restoration, 50; Demonstration Area, 558WILLIAMS, R. R., The Beri-beri Vitamin Field, 410WINCHELL, A. N., Granitic and Basaltic Shells, 32Wisconsin, University of, Arboretum, 223Wolcott, Robert Henry, H. B. WARD, 422WOLLENWEBER, H. W., Fusarium Bactridioides, 572WoOD, R. W., The Raman Spectrum of Heavy Water, 35Woods, Terms Used in Describing, S. J. RECORD, 56WULF, H. and T. DURFEE, Holder for Small Animals, 414X-Rays, Effects of, on Planaria dorotocephala, F. G.MESERVE and M. J. KENNEY, 408

Yale, Univ., Graduate School, 231; Expedition, 133;Sterling Fellowships at, 474; Honorary Degrees at, 585

YANCEY, P. H., Alabama Acad. of Science, 506YERKES, R. M., Multiple Births in Anthropoid Apes, 430YOUNG, W. J., U. S. Botanic Garden, 252Zea Mays var. saceharata, A. T. ERWIN, 589ZELENY, J., Lightning Rods, 269ZINZADZEt, C., Media with Stable Hydrogen-ion Concen-

tration, 480ZOLLINGER, R. and M. T. SCHNITKER, Skin Temperature

Reactions, 540

viii SCIENCE

I

.o ,4v

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JANUARY 5, 1934 SCIENCE-ADVERTISEMENTS 5

SCIENCE-A DVERITISEMENTS Vol,. 79, No. 203(;

NO. 35 TROEMNER ANALYTICAL BALANCE

TROEMNER ANALYTICAL BALANCE No. 35i. A balance of rugged and robtust construction and ofsimple design, intended primarily to meet the re(Iuirenments of educational laboratories in quantitative analysis. Thesimple and durable construction hias so commended this balance to indittstrial chemists as to make our sales to industriallaboratories equal those to educational laboratories. In the sale of over 3100O of these balances, most of whichl are in dtailyuse, we have never met with a single expression of disapproval or dissatisfaction on the part of the purchiaser or user, andin many instances we have received continued repeat ordlers from t-e same laboratory.Sensitivity-'/: tnilligrttn with fuill load, i.e., a chatige whichl has pirovedi free fromi atny possibility of de-

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JANUARY 5, 1934 SCIENCE-ADVERTISEMENTS

COMING IN JANUARY

A monumental reference work, complete, up todate and authoritative, covering the whole fieldof chemical engineering and related fields

ContributorsANTHONY ANAB3LEEWALD ANDERSONH. R. ARNOLDW. L. BADGERBJ. M. B3AKERA. D. BLAKEP. W. BDORDMANW. S. CALCOTTJ. S. CAREYW. H. CARRIERA. P. COLBURNC. W. CUNO HNBOHELA. CURTISD. S. DAVISK. H. DONALDSONT. B. DREWRAYMOND W. DULL E iogi.C if O N . E RH. C. DUus E JOHN.H. PERRJ. C. ELGIN Assisted by ata c"of 60 specialistsA. B. FLowERsAsitd atffoR. P. GENEREAUXG. D. GRAvES 30 sections, 2600 pages, 4'4 x 7, fully illustratedCHARLES R. HARTE, JR.W. G. HILLENH. C. HOTTEL The publication of this pioneer work is an event of major impor-W. J. HUFFN tance in chemical literature. Sixty specialists, with the co6ipera-S. B. KANOWITZ tion of over 150 chemists and engineers, offer the latest usableE. T. LEsSIGGORDON MACLEAN material not only on fundamental unit processes, but also on suchW. H. MCADAMS related subjects as electrochemistry, high pressure technique, ma-W. H. McCADAMSW. L. MCCABE terials of construction, Jfuels and fire protection.F. T. MCNAMARAH. L. MINER The editor has had the enthusiastic collaboration of several col-H. L. MINTOERYG. L. MONTGOMERY leagues in the Du Pont organization and other chemical enoineersL. H. MORRISON9W. A. MYERS in industry and education.T. R. OLIVEJ. H. PERRYB. J. PRINDLE _ _ _ _ _ _ __CONE T

G. A. PROCHAZKA ONTENTSR. B. PuRDYE. E. REID 1. Mathematical Tables and Weights 15. Mechanical SeparationT. R. RUNNING and Measures 16. Crushing, Grinding and PulverizingW. P. RYAN 2. Mathematics 17. Measurement and Control of Operat-T. K. SHERWOOD 3. Physical and Chemical Data ing VariablesPAUL SOLLENBERGER 4. Indicators, Qualitative Analysis, 18. Materials of ConstructionWILLIAM STANIAR Catalysis, Organic Chemistry 19. High Pressure TechniqueW. 0. STAUFFER 5. Physical and Chemical Calculations 2)0. Material TransportationJ. W. STILLMAN 6. Flow of Fluids 21. FuelsH. S. TAYLOR 7. Flow of Heat 22. P'owerP. V. TILDEN 8. Evaporation 23. RefrigerationKENNETH S. VALENTINE 9. Humidification, Dehumidification, 24. ElectricityR. G. WARNER Cooling Towers and Spr-ay Ponds 25. ElectrocheimiistryH. M. WEIR 10. Gas Absorption 26. Plant LocationHOOD WORTHINGTON 11. Adsorption 27. Cost AccountingH. L. YOUNG 12. Distillation 28. Safety and Fire ProtectionF. C. ZEISBERG 13. Drying 29. Reports and Report Writing

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JANUARY, 5, 1934 SCIENCE-ADVERTISEMENTS 9