NEW SERIES. VOL. L.-JANUARY TO JUNE, 1920 THE NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS Aerostatic Pressure and Gravity, A. MCADIE, 144 Agriculture, N. Y. State College, 317, 431 ALEXANDER, J., Blue in Snow, 465 ALLEE, W. C., Amer. Soc. of Zoologists, 214 ALLEN, W. E., Micro-plankton, 487 ALTER, D., Sunspots and Earthquakes, 486 American Association for the Advancement of Sci- ence: A Ticket to St. Louis, SCHOOLMASTER, 16; St. Louis Meeting, G. T. MoOORE, 48; Grants, 83; AMES, J. S., Einstein's Law, 253 Anopheles, F. E. CHIDESTER, 244 Anthropological Soc. of Washington, 39 Arctic Expedition, Canadian, 167 Aristotle and Galileo on Falling Bodies, F. CAJORI, ARMSBY, H. P., Organization of Research, 33 Ash Dune Plants, W. D. RICHARDSON, 546 J. G. COFFIN, 366 Atmospheric Moisture, C. F. BROOKS, 440 Aviation, Psychology of, H. M. JOHNSON, 449 Brachiopod Fauna, Pocono, W. A. PRICE, 146 Brain Workers, Federations of, 272 BREED, R. S., Legume Nodules, 391 British, Research Associations, 38; Natural His- BROOKS, C. F., American Meteorol. Soc., 275; Rain- fall of the U. S., 324; West Indian Hurricane, 369; Auroras, 392; Rainfall Interception, 439; Atmospheric Moisture, 440; Irregularities in Brown, E. W., Motion of the Moon, 481 |