The First Natural History Museum in America.

Cooperation with the Film Industries in the Study of Special Articles: Primitive Music: PROFESSOR CARL E. SEASHORE ...... 263 The Effect of Humidity on Beta Streptococci Scientificc Events: (Group C) Atomized into Air: PROFESSOR W. F. WELLS and PETER ZAPPASODI. Isolation of a New Recent Deaths; The Achievements of Medicine in "Carotenoid" from Bat Liver: DR. CHRISTOPHER Siberia; Aeronautics at the University of Illinois; CARRUTHERS and DR. FRANK URBAN. Mock DomiMicrofilm Photography; The Committee on Consernance and Hybrid Vigor: FREDERICK D. RICHEY ...... 277 vation Education; The Research Advisory Committee of the National Association of Manufacturers 265 Scientific Apparatus and Laboratory Methods: A Simple Photoelectric Relay: DR. EARL B. WORKScientific Notes and News ..... ............... 268 ING. A New Agar Medium for Drosophila Culture: PROFESSOR M. T. LEWIS .......... ............... 281 Discussion: Modern Vocational Agriculture: DR. H. M. HAMScience News ......................... 8 LIN. Ants as Probable Agents in the Spread of Shigella Infections: SOPHIE DEHLER GRIFFITS. Medical Orthoepy: DR. BRADFORD N. CRAVER. SCIENCE: A Weekly Journal devoted to the AdvanceA Seven-Year-Old Bank Swallow: DR. DAYTON ment of Science, edited by J. MCKEEN CATTELL and pubSTONER and LILLIAN C. STONER. A Sting-Ray lished every Friday by Attack on a Man on the Upper Amazon: DR. HARVEY BASSLER ................. 270 THE SCIENCE PRESS