The Need of Insular Exploration as Illustrated by Birds.

The Need of Insular Exploration as Illutstrated by Birds: DR. ROBERT CUSHMAN MURPHY .............................. 533 Scientific Events: Research Grants of the Virginia Academy of Science; Congress of American Industry of the National Association of Manufacturers; Award of the Roebling Medal of the Mineralogical Society of America to Dr. Schaller; Medals of the American Geographical Society for 1938. Recent Deaths and Memorials ............................................ 539 Scientiflc Notes and News ............................................ 541 Discussion: Photosynthesis and the Living State: PROFESSOR 0. L. INMAN. A Sulfoxide of Methionine: DR. G. TOENNIES. Comments on the Shape, Growth and Quantity of the American Oyster: GORDON GUNTER. The Fermentation Test for Vitamin B1: DR. ALFRED S. SCHULTZ, LAWRENCE ATKIN and DR. CHARLES N. FREY. Appeal for Aid from Czecho-Slovakia: DR. A. HRDLI6KA ........................................... 544 Scientific Books: Animal Parasitology: PROFESSOR HENRY B. WARD. Solar Radiation: DR. HERBERT H. KIMBALL. Vitamin B1 and Its Use in Medicine: PROFESSOR E. V. MCCOLLUM ................. .....................547 Special Articles: A Fatal Disease of Pigeons Caused by the Virus of the Eastern Variety of Equine Encephalomyelitis: DR. LEROY D. FOTHERGILL and DR. JOHN H. DINGLE. The Demonstration of Phage Precursor in the Bacterial Cell: DR. ALBERT PAUL KRUEGER and JEAN H. MUNDELL. The Hydrolysis of Sterol Glycosides by Emulsin: DES. F. P. VEITCH, JR., II. S. MILONE and E. L. EVERITT. An Effect of Lipid Feeding upon Vitamin C Excretion by the Rat: RADE R. MUSULIN, and OTHERS. Plant Virus Inhibitors Produced by Microorganisms: DR. JAMES JOHNSON ........................................... 549 Scientific Apparatus and Laboratory Methods: The Useof Plastic Materials for Operations on Amphibian Embryos: DR. WALTER ALVA STULTZ. A Culture Slide for Dark-field Microscopy: PROFESSOR WARD J. MACNEAL and ANNE BLEVINS ............ 553 Science News ............................................ 6