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Academy of Sciences acid activity Advancement of Science Agriculture American Association American Chemical Society animals annual meeting April asso awarded biological biotin blood cancer cells cent chairman Chem chemical chemistry Chicago College Columbia University committee Council desoxycorticosterone director disease Division effect elected engineering experimental experiments factors field Geological Grand Central Terminal Harvard Harvard University held human important industrial injected investigation ions John Jour journals laboratory lecture material mathematics Medal Medical Medicine ment method mice molecules Museum National nature normal nutrition obtained organization pantothenic acid papers physics physiological plants present president problems production professor protein rats recent RECENT DEATHS riboflavin School scientific scientists secretary Section sessions Sigma Xi Smithsonian Institution Building social Society solution species sulfanilamide symposium tion tissue tobacco mosaic virus tumor United University versity vice-president virus vitamin Washington York York City zoology