KOFOID, C. A., Requests for Biological Publica- KRAUS, E. H., Future of Mineralogy in America, Lance and Fort Union Formations, C. SCHUCHERT, LEE, W. T., "Aerial Photo-hydrography," 163 LEIDY, J., JR., Researches in Helminthology and LEITH, C. K., Structural Failure of the Litho- Leng on the Coleoptera of America, L. O. How- Leucochloridium in America, T. B. MAGATH, 43 Lime Sulfur, Dormant, and the Apple Blotch, E. Limestone Formations of the Cretaceous, R. T. Lithium, Positive Ray Analysis of, A. J. Demp- Lithosphere, Structural Failure of the, C. K. Litmus in Bacteriology, I. C. HALL, 388 LITTLE, C. C., The Fourth Chromosome of Droso- LIVINGSTON, B. E., Weaver on Root Development, 335; Spring Meeting of the Executive Commit- 548 169, LOEB, J., Electrification of Water and Osmotic LOEB, L., Amoeboid Movement, Tissue Formation Logic, Chair of, at the University of London, 37 MCADIE, A., Thrice-told Tales, 259; Atmospheric Pollution, 389; Humphreys on The Physics of the Air, 310; Jellicoe on The Crisis of the MACCURDY, G. G., Anthropometry, H. H. Wilder, 288 MACDONALD, R. M., A Question of Bibliography, 74 MACDOUGAL, D. T., High Temperature Record for MCGILLIVRAY, A. D., The Coccidæ, W. A. RILEY, MCNIDER, W. B., Acid-base Equilibrium of the MAGATH, T. B., Leucochloridium in America, 42 Magnetism, Electron Theory of, S. J. BARNETT, Magneto-optical Effect, E. THOMSON, 565 MAXWELL, S. S., Equilibrium Functions of th Medical, Education, in China, 111; Congress o Medicine and the Public, W. G. MORGAN, 243 MEISINGER, C. LER., Physiological Meteorolog 337; Meteorology and Balloon Racing, 442 Mellon Institute, Industrial Fellowships of the, 38 Meredith, Ex-secretary, on Research, 356 Metals, Catalytic Properties of the Respirato METCALF, M. M., Technical Study at Oberlin C lege, 117; Amer. Publications and Internation Meteor Fall in the Atlantic, H. S. WASHINGT Meteorological Soc. Amer., 360 Meteorology and Climatology, Notes on, C. LE Metric System, L. C. KARPINSKI, 156; Eng MICHELSON, A. A., Interference Methods, 21 Milk, Cow's, E. V. ANDERSON, R. A. DUTCHER MILLER, G. A., Sumario Compendioso of Bro MILLIKAN, R. A., Henry Andrews Bumstead, Mirage at Sea, W. J. FISHER, 236; Sidewalk MOODIE, R. L., Anatomic Illustration, 259; MOORE, B., Natural Areas and Biological Sci MOOREHEAD, W. K., Archeological Specimens, 453 National, Museum and Dr. Jordan, 113; Aca of Sciences, Marsh Fund of the, 184, 421, tions, 454, Medals of the, E. E. SLOSSON, Temperament in Scientific Investigations, CARMICHAEL, 298; Health Agencies, Cooper of, 359; Parks, V. E. SHELFORD, 43, 431 tanic Garden, 433; Research Council, 434; Naturalists, Amer. Soc. of, A. F. SHULL Nebraska Academy of Science, 558 Nervous Disorders, English Hospital for, 513 Newspaper Science, O. TUGMAN, 389 Newton's Corpuscular Theory of Light, NICE, L. B., Oklahoma Academy of Science, 'atent Office, 481 Pavlov, Professor, S. MORGULIS, 74 PEARL, R., War and Population, 120 Personnel Research Federation, 280 Peru, Expedition of Indiana University to, W. R. Philosophical Society, Amer., 302 Photochemistry of the Sensitivity of Animals to 'Photo-hydrography, Aerial," W. T. LEE, 164 Physiological, Laboratory, University of London's, PIPER, C. V., Plants and Plant Culture, 269 Plankton Investigations, Systematization of, A. H. Prehistoric Studies, Amer. Foundation in France Preservation of Natural Conditions, 252 PRIEST, I. G., Optical Society of America, 318, 499 Printing of Astronomical Observations, 140 Protozoon, Stock Cultures of, J. H. BODINE, 92 Publications, Amer., and International Exchange, M. M. METCALF, 259; Cost of German, M. M. SENSTIUS, 333; Cost of American in Roumania, Pulsation of a Cat's Heart after Death, H. GUN- Relativity, and Einstein's Solar Field and Space Research, Organization of, W. M. WHEELER, 53; Astronomical, W. W. CAMPBELL, 116; Directors of, and Scientific Qualifications, 454 RICHARDSON, R. G. D., Amer. Math. Soc., 191, 372, RIGG, G. B., Western Society of Naturalists- RILEY, W. A., The Coccidæ, A. D. McGillivray, 517 ROEVER, W. H., A. Dresden, and W. D. CAIRNS, Section A and Associated Mathematical Organi- Romancing in Science, D. W. HORN, 44 Rosa, Edward Bennett, S. W. STRATTON, 569 Royal Society Conversazione, 552 RUEDEMANN, R., J. M. CLARKE, C. H. SMYTH, Ruins in the Upper Canadian Valley, 513 Russian Men of Science and Letters, 93, 381; V. Rust in Kanred Wheat, R. F. ALLEN, 575 Salaries, Classification and, of Government Em- SCHAEBERLE, J. M., Newton's Corpuscular Theory SCHUCHERT, C., Lance and Fort Union Formations, 45; Terrestrial Life with the Coals of Northern SCIENCE and the Printers' Strike, 495 CAJORI, 163; F. E. BRASCH, 315; Agency for Scientific, Notes and News, 17, 39, 70, 88, 113, 134, 160, 185, 210, 232, 254, 282, 303, 329, 360, 410, 434, 455, 483, 498, 514, 531, 553, 571; Events, 37, 68, 85, 111, 131, 157, 182, 207, 229, 252, 279, 301, 327, 356, 380, 407, 431, 454, 481, 495, 512, 529, 552, 569; Books, 119, 165, 189, 215, 237, 259, 288, 310, 335, 367, 389, 416, 441, 458, 486, 501, 517, 536; Publications and Post- offices, H. F. CLELAND, 180; Lectures at Minne- sota, 183; Basis of Science Teaching, E. R. DOWNING, 250; Legislation, 357; Organization, Scienziati Italiani, L. C. KARPINSKI, 237 SEARS, P. B., Variation in Taraxacum, 189; Vege- SENSTIUS, M. W., Cost of German Publications, Sex in Schistosomidæ, W. W. CORT, 226 SHOWALTER, A. M., Chromosomes of Conocephalum conicum, 333 SHUFELDT, R. W., Nelson R. Wood, 67 SLONAKER, J. R., Device for giving Anæsthetics, 75 SMILEY, F. J., Western Soc. of Naturalists, 522 SMYTH, C. H., JR., J. M. CLARK and R. RUEDE- Soil Color Standards, J. G. HUTTON, 164; Acidity Special Articles, 23, 47, 75, 94, 120, 141, 167, 190, 216, 238, 261, 290, 314, 339, 368, 391, 418, 444, 460, 487, 503, 518, 539, 557, Star, Time Observations, W. J. FISHER, 94; Di- Static Atom, I. LANGMUIR, 290 Steindachner, Franz, D. S. JORDAN, 68; H. W. Stevens on Diseases of Economic Plants, M. T. Stockwell, John Nelson, C. S. Howe, 35 Sumario Compendioso of Brother Juan Diez, G. A. Surveying from the Air, E. L. JONES, 308 DENHALL, 137; J. WRIGHT, 138; A. MCADIE 259; W. W. CAMPBELL, 311; S. G. BARTON, 36 Taraxacum, Variation in, P. B. SEARS, 189 Technical Study at Oberlin College, M. M. MET Terrestrial Life with the Coals of N. France, THOMSON, E., Recent Auroras, 534 Tropical Medicine, American Journal of, 231 Tuberculosis, Professor Calmette on a Vaccine fo TUGMAN, O., Newspaper Science, 389 Twins and Triplets, Relative Numbers of, C. Z University and Educational News, 19, 41, 73, 9 116, 137, 163, 187, 211, 235, 257, 286, 304, 33 Vegetation Mapping, P. B. SEARS, 325 214 WAKSMAN, S. A., and JoFFE, J. S., Acid Prod War and Population, R. PEARL, 120 Washington Academy of Sciences, 87 WATSON, F. R., Knipp's Singing Tube, 393 WEBSTER, A. G., Adjustable Embouchure, 1 WELSH, F. R., Crows and Starlings, 485 WHEELER, W. M., Organization of Research, 53 WHERRY, E. T., Kraus and Hunt's Mineralogy, WHIPPLE, G. C., Public Health Work of Profe WIELAND, G. R., Paleobotany as viewed by WILDER, H. H., Anthropometric Measurements WILEY, H. W., Franz Steindachner, 486 Wisconsin Acad. of Sci., Medallion of, 571 Wood, Nelson R., R. W. SHUFELDT, 67 WOOD, R. W., Thrice-told Tales, 44 WOODS, A. F., Future of Agricultural Science WRIGHT, G. F., Preglacial Outlet of Lake Erie Y-chromosome in Mammals, T. S. PAINTER, 50 Yale University, Museum and Collections, 409 Yellow Fever, Minnows as Eradicators of, 43 YERKES, R. M., Relations of Psychology to cine, 106; Science and Community Trusts, Youngken's Pharmaceutical Botany, H. H ZELENY, C., Relative Numbers of Twins and Zoologists, Amer. Soc. of, W. C. ALLEE, 97 THE seventy-third meeting of the American Association for the Advancement of Science, held in Chicago from December 27 to Jan- uary 1, was the second of the greater convoca- tion week meetings of the association and of the national scientific societies associated with it, convened once in four years successively in New York, Chicago and Washington. The remarkable scientific activity of the central west and of the reconstruction period follow- ing the war were adequately reflected by the attendance and programs at Chicago, which have probably not been surpassed by any previous gathering of scientific men in this or any other country. In addition to four- teen sections of the association, forty-one national scientific societies met in Chicago and the official program of 112 pages ex- hibited the scientific productivity of the na- tion in the whole range of the natural and The association has been fortunate in its presidents. The address of the retiring pres- ident, Dr. Simon Flexner, director of the laboratories of the Rockefeller Institute for Medical Research, on "Twenty-five years of bacteriology," printed in the last issue of SCIENCE, was an admirably clear presentation of a subject unsurpassed in its importance to human welfare, described by one who has led in the work. Dr. L. O. Howard, chief of the Bureau of Entomology, presided with dignity, skill and tact. He has played a large part in a subject in which science has demonstrated its service in the economic development of the nation and has been the chief executive officer of the association dur- ing the twenty-two years which have wit- nessed such an extraordinary development of the scientific work of the country, paralleled 2 Professor E. H. Moore, of the University of Chicago, who will preside at Toronto and give his address at Boston is the acknowledged leader of American mathematicians. It is now many years since that science which is fundamental to all others has supplied a president to the association, and it is fortunate that a representative could be selected with the unanimous approval of all mathematicians. Dr. D. T. MacDougal, director of the department of Botanical Research of the Carnegie Institution, who has been active in the organization of the work of the association, more specially in the Pacific and Southwestern Division, was elected general secretary to succeed Professor E. L. Nichols, of Cornell University. By the constitution the general secretary is entrusted with the important task of promoting the organization of the association especially in its relation to the affiliated societies. Another step that will promote the efficiency of the work of the association was the authorization of the appointment of an assistant secretary who will assist the permanent secretary in the scientific work of the association, as he is now assisted in the work of the office by the efficient executive assistant, Mr. Sam Woodley. The sessions were held mainly in buildings of the University of Chicago, which furnished excellent facilities. The University Baptist Church provided for the sessions of Section K, Political and Economic Sciences, and the Quadrangle Club (Faculty Club) was also made available for some meetings, dinners, etc. At the Chicago Art Institute was held the reception of the Wild Flower Preservation Society, at which was exhibited a collection of flower portraits, etc. The exhibit of working models on wireless telephony, set up through the cooperation of the National Research Council, was also in the Art Institute. The local arrangements for the meeting were in charge of the local committee: J. Paul Goode, General Chairman Frank R. Lillie, Finance To the efficient and tireless efforts of Professor Goode and the other members of the local committee is due, in very great measure, the success of the Chicago meeting. The arrangement by which admission to the three general sessions was by ticket perhaps caused a small amount of unavoidable difficulty, but it made possible an analysis of the attendance. This rule is in exact accord with the provisions of the by-laws. Tickets were given out only to registered persons, this applying to guests as well as to members. The total registration for the Chicago meeting was 2,412. This is the largest registration ever recorded for the association, but it must be remembered that many persons in attendance at the meeting failed to register, so that the corrected number was much larger. Of those registering 1,383 were members of the association or delegates from institutions 377 were members of associated societies not members of the association, 237 were invited guests, students of the University of Chicago and 415 were other guests. The geographical distribution of the attend ance is shown below: |