MEYER, A. W., A Suggestion from Plato, 530 MILLER, G. A., Professor Ludvig Sylow, 85; Com- MILLER, L. H., Mendelian Phenomena, 148 MILLER, D. C., Amer. Physical Soc., 197 Mineral Deposits in the U. S., 465 Mining Engineers, Amer. Inst. of, 143 MITCHELL, P. C., Desmognathus Fuscus, 283 Monkeys to pick Coco Nuts, E. W. GUDGER, 146 National, Acad., Proceedings, E. B. WILSON, 46; of Sci., 286, 429, 444; Flower and Hay-fever, H. GUNTHORP, 147; W. SCHEPPEGRELL, 284; Re- Naturalists, Amer. Soc. of, B. M. DAVIS, 75; West- NEEDHAM, J. C., Laboratory and Government Zool- NELSON, E. W. Laboratory and Government Zool- NEUMANN, F., History of Sciences in U. S., 330 NEWCOMER, H. S., The Extinction Coefficient, 241 Nonsilverable Containers, W. W. COBLENTZ, 192; Numerals, Common, G. A. MILLER, 215 NUNN, R., Tennessee Acad. of Sci., 150 NUTTING, P. G., Optical Soc. of Amer., 52 OBERHOLSER, H. C., Birds of the Americas, C. B. Cory, 93; Life Zone Investigations, M. Cary, 312; Natural History of the District of Columbia, W. L. McAtee, 568 Opisthotonus, Dr. Moodie's, B. DEAN, 357 Optical Soc. of Amer., P. G. NUTTING, 52 Organic Chemistry, Aliphatic Series, A. Lowy, 313 Organisms, Growth in, D. T. MACDOUGAL, 599 OSBORN, H., Zoological Aims and Opportunities, 101 OSBORN, H. F., Samuel Wendell Williston, 274; American Museum of Natural History, 477; Zoologica, 592 OSGOOD, W. F., Gabriel Marcus Green, 534 Pacific Division of A. A. A. S., 483, 599 Paleontological Soc., R. S. BASSLER, 50 PALMER, G. T., Influenza Infection, 288 Pandemic, Lessons of the, G. A. SOPER, 501 Paris Academy of Sciences, K., 404 PARSONS, C. L., Amer. Chem. Soc., Buffalo Meet- Patent Reform, B. RUSSELL, 356 PEARSE, A. S., Pygidiida, C. H. Eigenmann, 403 PEIRCE, G. J., Kinds of Botany the World Needs, 81 PHILLIPS, H. B., Relativity of Motion, R. C. Tol- Philosophical Soc., Amer., A. W. GOODSPEED, 545 Physical, Amer., Soc., D. C. MILLER, 197; Improve- ments in Army Men, F. M. HILDEBRANDT, 404 Physics of the Air, W. J. HUMPHREYS, 155, 182 Physiography of Vermont, G. H. PERKINS, 77 Physiology of a Working Day, 424 Phytopathological, Amer., Soc., C. L. SHEAR, 174 Pickering, Edward Charles, H. N. RUSSELL, 151 Pigeon, Passenger, F. R. WELSH, 402 Pink Root of Onions, J. J. TAUBENHAUS, 217 Plato, A Suggestion from, A. W. MEYER, 530 Polyembryony and Encyrtidæ, L. O. HOWARD, 43 POOR, C. L., Astronomy, C. A. Young, 614 Potato Diseases, M. F. BARRUS, 542 PRICER, J. L., Ill. State Acad. of Sci., 451 Proboscideans of New York, O. P. HAY, 377 Protein Antigens, C. BROOKS, 196 Psychiatry and the War, W. H. R. RIVERS, 367 Psychological Assoc., Amer., H. S. LANGFELD, 51 Psychology, Applied, E. B. TITCHENER, 169; Divis- Pumpelly, R., Reminiscences, W. M. DAVIS, 61 Putnam, Dr. James Jackson, H. P. WALCOTT, C. C. JACKSON, E. W. EMERSON, E. H. BRADFORD, M. Pyrex Glass, Cutting, C. T. KNIPP, 450 RAINES, M. A., Rotary Vertigo in the Tail-Spin, 266 Research, Industrial, in Ontario and Prussia, A. Reservations, Wild Life, A. G. RUTHVEN, 17 RETTGER, L. F., Milk Hygiene, L. A. Klein, 25 Revista Matematica Hispano-Americana, G. A. REYNOLDS, E. S., Root Pressure and Root Exuda- RICHARDS, T. W., Radioactive Lead, 1 Ritter, W. E., Philosophical Biology, W. P. TAYLOR, 449 RIVERS, W. H. R., Psychiatry and the War, 367 ROBERTSON, C., Generic Determinations of Bees, 422 Roosevelt, Theodore, and American Foresters, 114; Root Pressure and Root Exudation, E. S. REY- ROSEN, H. H., Disease of Foxtail, 291 RUSSELL, H. N., Variable Stars, 127; Edward RUTHVEN, A. G., Wild Life Reservations, 17 S., W., Game Birds of Calif., J. Grinnell, H. C. Sabine, Wallace Clement Ware, E. H. HALL, C. N. Salt Requirements of Plants, 143 Science in the British Parliament, 358 Sciences, History of, in U. S., F. NEUMANN, 330 Scientific, Events, 15, 38, 65, 85, 114, 141, 163, 188, 209, 230, 259, 278, 302, 323, 350, 372, 394, 419, 443, 465, 489, 510, 535, 558, 584, 607; Notes and News, 19, 40, 67, 88, 116, 144, 165, 189, 211, 232, 261, 281, 303, 326, 353, 375, 396, 421, 445, 467, 492, 513, 538, 561, 586, 610. Books, 25, 46, 93, 121, 148, 171, 193, 217, 265, 285, 312, 332, 359, 381, 403, 425, 449, 472, 498, 518, 543, 568, 592, 614; Organization and A. A. A. S., 112; Spirit, M. M. METCALF, 551; Instruments, Early, 584 SEYMOUR, R. J., and E. P. DURRANT, Vitamin Shaw, Sir Napier, Wind and Barometric Pressure, SHEAR, C. L., Amer. Phytopathological Soc., 174 589 Smell, Deficiencies in, C. R. STOCKARD, 237 SMITH, C. A., Utah Acad. of Sci., 475 Smith, E. F., Electroanalysis, C. G. FINK, 332 SMITH, H, I., Bison for Museums, 517 Smith Herbert Huntington, W. J. HOLLAND, 481 Smithsonian Institution, L. AGASSIZ, 300 Solar Eclipse of May 29, 1919, L. A. BAUER, 260 SOPER, G. A., Lessons of the Pandemic, 501 Sound and Flash Ranging, A. TROWBRIDGE, 521 Special Articles, 26, 48, 72, 94, 122, 148, 196, 217, 241, 266, 288, 313, 336, 360, 385, 404, 427, 450, 474, 499, 521, 544, 569, 594, 615 Spectrum Phenomena and Moving Motes, C. Sphærocarpos Texanus, M. A. SCHACKE, 218 SPRAGG, F. A., Biological Literature in English, 23 Stars, Variable, H. N. RUSSELL, 127 STEBBINS, J., Committee on Grants of Amer. Assoc. for the Advancement of Sci., 211; Astronomical Step, Keeping, W. M. COLEMAN, 380 STEVENS, O. A., Generic Limitations, 71 STRONG, E. K., JR., Anthropology and Psychology, 125 Sugar Cane, Immune, C. O. ToWNSEND, 470; Tech- TAUBENHAUS, J. J., Pink Root of Onions, 217 Tennessee Academy of Science, R. NUNN, 150 THORNDIKE, E. L., Scientific Personnel Work in Army, 53; and K. DUNLAP, Psychological Re- TITCHENER, E. B., Applied Psychology, 169. John Tolman, R. C., Relativity of Motion, H. B. TOWNSEND, C. O., Immune Sugar Cane, 470 Tropical Enervation, V. MACCAUGHEY, 44 TROWBRIDGE, A., Sound and Flash Ranging, 521 TRUE, R. H., P. G. AGNEW, Union of Scientific Fed- Union of Scientific Federal Employees, R. H. TRUE, University and Educational News, 22, 43, 69, 91, 119, 146, 169, 191, 214, 236, 263, 283, 307, 328, 355, 377, 400, 422, 447, 470, 495, 515, 540, 563, Uranium Ore, S. C. LIND, and C. W. DAVIS, 441 Valence, W. A. NOYES, 175 Valley of Ten Thousand Smokes, J. W. SHIPLEY, Van Hise, President, in Memory of, 114 VINCENT, G. E., The University and Public Health, 245 VIOL, C. H., Radium Production, 227 VRIES, H. DE, Bastardierung, A. Ernst, 381 Wade, F. B., Precious Stones, O. C. FARRINGTON, 217 WADSWORTH, M. E., Human Flying, 379 WALCOTT, C. D., Lille Society of Sciences, 70 Walcott, C. D., Trilobites, G. R. BRIGHAM, 543 War Researches at St. Andrews University, 510 Washburn, F. L., Injurious Insects, W. E. BRITTON, "Wave of Life," G. B. CLAYCOMB, 424 Well, Artesian, Flowing, H. P. LITTLE, 24 WELLS, W. F., B. Coli Index, 400 WELSH, F. R., Passenger Pigeon, 402 WHITE, E. A., Kansas Acad. of Sci., 476 WHITE, G. F., Egg-Yolk Media, 362 Williams, Professor, at Yale, H. E. GREGORY, 63 Zoological Aims and Opportunities, H. OSBORN, 101 Zoologists, Amer. Soc. of, 98; Laboratory and Young, C. A., Lessons and Elements of Astronomy, Young, S., Stoichiometry, J. L. R. MORGAN, 46 The Glass Blowing Situation Being No. 2 of a series of announcements dealing with our The first appeared in December issue; others will follow monthly. Thuringia and Bohemia, countries which are now the subject of universal discussion, had Import houses like ours, who had in the past depended on them, were from the very beginning Eimer and Amend faced this situation, fortunately, with the largest supply of chemical Adding another shop to our equipment at that time soon doubled our output; but it was How far we succeeded may be judged from the fact that today our force of glass blowers A substantial share of credit for these accomplishments belongs to our customers and EIMER & AMEND NEW YORK AND PITTSBURGH Increased Factory Facilities Including the building and operation of the most ideal optical glass factory in America- ENABLES US TO PROMPTLY RESUME MANUFACTURE OF INSTRUMENTS MICROSCOPES DELINEASCOPES MICROTOMES SCIENTIFIC APPARATUS IN A LARGER AND MORE COMPLETE WAY THAN HERETOFORE It also permits the maturing of plans for the manufacture of ་ ། Optical Measuring Instruments In which we expect to incorporate superior features, making them excel European models. ABBE REFRACTOMETER Announcement of which will be made later. TO PROMOTE ORIGINAL RESEARCH IN Thirty-one Volumes Published, which contain BIOLOGICAL STUDIES YALE UNIVERSITY TWO FELLOWSHIPS, yielding an income of $1,000 each, open to men or women. Preference is given to candidates who have already obtained their Doctorate, and have demonstrated by their work fitness to carry on successfully original research of a high order. The holder must reside in New Haven during the college year, October to June. Applications should be made to the Dean of the Graduate School, New Haven, Conn., before April 1, 1919; they should be accompanied by reprints of scientific publications and letters of recommendation, and a statement of the particular problem which the candidate expects to investigate. OPTIC PROJECTION Principles, installation and use of the Magic Lantern, Opaque TEACHERS WANTED Men needed for college positions:-Physics, $2000; Biology. $1600; Chemistry and Physics, $1700; Instructor in Physics, $1500; Assistant in Chemistry, $1500. Special terms. Address THE INTERSTATE TEACHERS' AGENCY MACHECA BUILDING thousands of original descriptions of taxonomic groups in Zoology and Botany and are a necessity to systematic workers. If you want these valuable Proceedings, act now, as only three complete sets are available from the Society. Price for the 31 volumes in original brochures, $93.00. Annual Subscription, $3.00. Bulletin of the Biological Society of Washington One Volume published: A Sketch of The Natural History of the District of Columbia, 142 pages, 5 maps. Essential to libraries desiring complete collections on general or local natural history, on the geography or distribution of life in Eastern United States, or on the Coastal Plain and Pine Barrens. Price $2.15 postpaid. BIOLOGICAL SOCIETY NEW ORLEANS | Biological Survey Washington, D. C. |