CONTENTS AND INDEX. NEW SERIES. VOL. L.-JULY TO DECEMBER, 1919 THE NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS Abbott, Charles Conrad and Ernest Volk, G. F. ABETTI, G., Scientific Mobilization in Italy, 196 Acceleration, C. HERING, 393; C. M. SPARROW, 482 Acoustic Effects of Wires, H. CLARK, 526 Agricultural Botany, H. F. ROBERTS, 549 Airplanes and the Weather, C. F. BROOKS, 483 Alaska, Expedition to, from California Museum, 13 Allardyce, Lady, Death of, J. M. CLARKE, 585 ALLEE, W. C., Amer. Soc. of Zoologists, 497 ALLEN, W. E., Naturalist's Place in his Community, American, Association for the Advancement of Sci- ence, and History of Science, F. E. BRASCH, 66; Symposium, Pacific Section, W. E. RITTER, 119, G. E. HALE, 143, C. H. ROWELL, 146; Proposed Constitution and By-Laws, 474; Section F, H.V. NEAL, 478; Committee of Policy, L. O. HOWARD, 487; Section E, 498; Secretaryship of, 498; St. Antarctic Expedition, New British, 85 Anthony, H. E., Mammals of Porto Rico, R. L. Anthropological Society of Philadelphia, 84 Appeal, R. PEARL, 524 ARMSBY, H. P., National Institute of Nutrition, 242 Atmospheric Pollution, 501 Atomic, Energy, 388; Projectiles and their Collis- Auroral Displays, C. F. BROOKS, 185, 230; F. Beef, Raw Lean, R. A. DUTCHER, E. M. PIERSON, A. Behavior, Instinctive, in the White Rat, C. R. GRIFFITH, 166; B. W. KUNKEL, 305 BELL, L., Visibility of Bright Lines, 331 BELLAMY, A. W., C. M. CHILD, Physiological Isola- BENNETT, J. P., J. G. DICKSON, Bourdillon Water Bent, A. C., North American Diving Birds, R. C. BENTON, E. J., History of Science and American BIESTER, A., R. A. DUTCHER, E. M. PIERSON, Raw Biology Course in American Colleges, G. E. NICH- Birth-rate, Significance of Declining, E. HAYES, 533 Births and Deaths in Civil Population of France BLANCHARD, A. A., Laboratory Instruction in Chem- BOAS, E. P., Mortality Statistics of Insured Wage BOGUE, R. H., Cooperation between the College and BOLLEY, H. L., Official Crop Inspection, 193 Bourdillon Water Still, J. P. BENNETT, J. G. DICK- Box Huckleberry, Extinction of, F. V. COVILLE, 30 BRIGGS, C. H., Digestibility of Branny Coats of British, National Physical Laboratory, New Ant- ject for Study, 164; Winter of 1918-1919, 165; Organization of Amer. Meteorol. Soc., 180, 546; Auroral Displays, 188, 230; Agricultural Meteor- Carnegie, Andrew, Will of, 228; Institution of CATTELL, J. McK., Third Edition of American Men Ceramic, Soc., Amer., 300; Industry, Research in, Cereals, Foot-rot of, B. F. DANA, 484 Chamberlin, Professor, Dinner in Honor of, 368 Charcoal Activation, H. H. SHELDON, 568 Chart of Organic Chemistry, Aromatic Series, A. Chemical, Soc., Amer., C. L. PARSONS, 505, 572, 595; Buffalo Meeting, 24, 48; Philadelphia Meet- ing, 62, 205, 282, 298, 421, 441, 464, 547, 572, 577; Address of President, 217; Conference, Chemistry, in the Navy, R. EARLE, 298; Interna- Cheshire, R. W., T. Smith, Small Telescope Objec- CHILD, C. M., A. W. BELLAMY, Physiological Iso- Chinese Lamp in Yucatan Mound, E. S. MORSE, 276 Cicada, Fungus Parasite of, A, T. SPEARE, 116 Civil Service Examinations, 495 CLARK, H., Acoustic Effects of Wires, 526 CLARK, H. L., Starfishes of the Philippines, W. K. Clarke, C. R., Boys' Book of Chemistry, H. P. TAL- CLARKE, J. M., Elephant with Four Tusks, 395; CLEVENGER, G. H., Division of Engineering, Na- COCKERELL, T. D. A., Scales of the Jordania, 569 COLE, L. J., J. MEGEATH, Somatic Variation, 525 CONRAD, W. A., Auroral Displays, 186 Constants and Variables, J. R. DE LA J. BUENO, 593 COPE, A. A., Photographing Colonies of Bacteria, 229 Corn, White versus Yellow, H. STEENBOCK, 352 Cornell University Medical College, 367 Cosmical Energy, A Possible Source of, I. W. D. COVILLE, F. V., Extinction of Box Huckleberry, 30 CREW, H., Problem of the Boy in the Swing, 139 Cronium in Helium from Natural Gas, H. P. CADY, Crop Inspection, Official, H. L. BOLLEY, 193 Crystallographical and Mineralogical Soc. of Amer., 497 CUNNINGHAM, B., North Carolina Academy of Sci- DALLENBACH, K. M., Snow-Rollers, 371 DANA, B. F., Foot-rot of Cereals, 484 Danne, Jacques, G. L. WENDT, 340 DAVENPORT, E., Cyril G. Hopkins, 387 DAVIS, T. L., Nature of Velocity, 338 DAVIS, W. M., A Wall-side Mirage, 372 Davis, Walter Gould, R. DeC. WARD, 11 Deflection of Light by Gravitation, 478 DICKINSON, J., Aurora at Burlington, Vt., 230 DICKSON, J. G., J. P. BENNETT, Bourdillon Water Diener, The Poor, E. R. L., 43 Digestibility of Branny Coats of Wheat, C. H. Dinosaur, Ornithomimid, in Maryland, C. W. GIL- Discussion and Correspondence, 19, 41, 66, 89, 112, 138, 162, 183, 209, 229, 252, 275, 304, 327, 346, 371, 393, 411, 435, 458, 481, 501, 524, 542, 568, DOLLEY, D. H., F. V. GUTHRIE, Nerve Cell Pig- DUBLIN, L. I.,Vital Statistics, G. C. Whipple, 187 DURRELL, L. W., Leptosphaeria Tritici of Wheat, DUTCHER, R. A., E. M. PIERSON, A. BIESTER, Raw Dye Industries, 366 EARLE, R., Chemistry in the Navy, 298 Earth, Tides, Report of Committee on, A. A. Edwards, Vinal N., H. C. BUMPUS, 34 Electric Engineering, Cooperative Course in, 367 Electrolytes and Colloids, J. LOEB, 439 Elephant with Four Tusks, J. M. CLARKE, 395 Elephants, Destruction in Cape Colony, 154 Elizabeth Thompson Science Fund, 521 ELSEY, H. McK., H. P. CADY, Cronium in Helium EMERSON, F. V., Clays of Port Hudson, La., 460 Engineering, Standardization, 14; Science and the |