Collective Farming in Russia and the Ukraine.

International Scholarships and Fellowships: DR. .. 52 Reports: FRANK AYDELOTTE . 52 The New York Botanical Garden .......................................... 65 Scientific Events: Special Articles: Council for Scientific and Industrial Research of Sulfhemoglobin Formation and Labile Iron in Vitro the Commonwealth of Australia; Work on Infantile and in Vivo: PROFESSOR GEORG BARKAN and PROParalysis at the Johns Hopkins University; ComFESSOR BURNHAM S. WALKER. Skin Sensitivity to monwealth Fund Fellowships in Medicine and Human Plasma: DR. MILTON LEVINE and DR. Public Health; Radio Programs on the War Work DAVID STATE .. 66 of Engineers; Honorary Degrees Conferred by Scientific Apparatus and Laboratory Methods: Harvard University...........................................54 Elimination of Contaminants with Ultra-violet Scientific Notes and News ................ ........................... 57 Radiation: DR. ALBERT M. KLIGMAN. Solubility of Anterior Pituitary Gonadotropin in Alkali Halide Discubssion: ouin R.DVDO OBSanOTES 6 The Cultivation of Tobacco Among the Pueblo Solutions: DR. DAVID 0. RoSBASH and OTHERS. 69 Indians: PROFESSOR LESLIE A. WHITE. Breeding Science News. 8 Disease-Resistant Crops: DR. FRED N BRIGGS. Weather Forecasts: B. E. SCHAAR. Per Cent.: SCIENCE: A Weekly Journal devoted to the AdvanceDR. FERRIN B. MORELAND. Health as a National ment of Science, edited by J. MCKEEN CATTELL and pubAsset: PROFESSOR THEODORE KOPPANYI. Cementlished every Friday by ing Sino-American Friendship: DR. EGBERT H. WALKER ..... 59 THE SCIENCE PRESS Quotations: Contributions to Science of the Johns Hopkins UniLancaster, Pennsylvania versity .62 Annual Subscription, $6.00 Single opies, 15 Cts. Scientific Books: SCIENCE is the official organ of the American AssociaThermodynamics; Physical and Chemical Contion for the Advancement of Science. Information regardstants: DR. W. F. G. SWANN. Sensation and Pering membership in the Association may be secured from ception: PROFESSOR R.S..................... the office of the permanent secretary In the Smithsonian ception: PROFESSOR S WOODWORTH 63 Institution Building, Washington, D. C.