The American Geophysical Union.

The American Geophysical Union: DR. J. A. FLEMSpecial Articles: ING . ....565 * Isolation and Properties of Chicken Erythrocyte Acetylcholine and the Physiology of the Nervous Nuclei: DR. ALEXANDER L. DOUNCE and TIEN Ho System: DR. J. F. FULTON and DR. D. NACHMANLAN. Fractional Cephalin-Cholesterol Flocculation SOHN .59 ... ............................. . 569 in Hepatic Disease: DR. MAURICE BRUGER. Studies Obituary: on Peripheral Visual Acuity: DR. FRANK N. Low 584 Mont Rogers Beid: DR. GEORGE J. HEUER. Recent Scientific Apparatus and Laboratory Methods: Deaths ............................... 571 A Macrochemical Reaction for the Detection of Scientific Events: Peach Mosaic: DR. AUSTIN 0. SIMONDS and PRORules for Affiliated Hospital Units of the Office of FESSOR E. W. BODINE. A Method for Narcotizing Civilian Defense; Search for Minerals in the MichHolothurians: DR. WILLIS G. HEWATT .............................. 587 igan Upper Peninsula; Rare Chemicals; Expedition Exhibition of the New York Zoological Society; Science News ............................... 8 Botanical Survey of the Alcan Highway; The Optical Society of America.................. 572 Scientific Notes and News................................. SCIENCE: A Weekly Journal devoted to the AdvanceDiscussion: ment of Science, edited by J. MCKEEN CATTELL and pubThe Mobilization of Science: JEROME ALEXANDER lished every Friday by Biology and the Kilgore Bill: DR. DONALD PRICE. The Moscow School of Topology: DR. ANDREI THE SCIENCE PRESS KOLMOGOROV ..................................................577 ....................Lancaster, Pennsylvania Scientific Books: Meteorology and Climatology: DR. C. W. THORNAnnual Subscription, $6.00 Single Copies, 15 Cts. TWIE ................................................................................... *------------------------SCIENCE Is the official organ of theAm rcn soia