The Relation of Microtechnique to the Morphology of Some Protozoan Parasites.

The Relation of Microtechnique to the Morphology of ence: PROFESSOR BURTON E. LIVINGSTON, DR. EsSome Protozoan Parasites: PROFESSOR D. H. WENmOND R. LONG and DR. FOREST R. MOULTON ............ 544 RICH ............ 529 Special Articles: Scientific Events: Fetal Encephalomyelitis: Prenatal Inception of InMedical Fellowships of the National Research Counfantile Toxoplasmosis: DR. ABNER WOLF, DR. DAVID cil; The Industrial Research Institute; Conference COWEN and DR. BERYL H. PAIGE. Experimental on the Sun and Solar-Terrestrial Relationships at Anti-Pernicious Anemia Factor Deficiency in Dogs: the Harvard Observatory; The Dedication of the DR. LATHAN A. CRANDALL, JR., C. OSVILLE FINNE, Yale Medical Library; Summer Conferences at JR. and DR. PAUL W. SMITH. Differential InhibiStanford University: Deaths and Memorials. 533 tion of Photochemical and Dark Reactions in PhoScientific Notes and News .536 tosynthesis by Inorganic Compounds: DR. SYDNEY Discussion: S. GREENFIELD.......... 548 Nutritional Problems of National Defense: DR. ALScientific Apparatus and Laboratory Methods: BERT M. POTTS. Biological Publication in America: An Improved Method for the Continuous MeasurePROFESSoR L. V. HEILBRUNN. The Wistar Instiment of the Rate of Oxygen Consumption for Hutute-American Film Center Motion Picture Survey: man Subjects: DR. A. P. GAGGE ...................................... 551 DR. EDMOND J. FARRI S and DONALD SLESINGER. InScience News .10 dustrial Solvents as Possible Etiologic Agents in Myeloid Metaplasia: DR. RULON RAWSON, PROFESSCIENCE: A Weekly Journal devoted to the AdvanceSOR FREDERIC PARKER, JR., and PROFESSOR HENRY ment of Science, edited by J. MCKEEN CATTELL and pubJACKSON, JR. The Opossum, Didelphis virginiana lished every Friday by Kerr, a New Host for Paragonimus in Tennessee: DR. E. ....................................... Scientific Books: Lancaster, Pa. Garrison, N. Y. Campbell on the Evolution of the Land Plants: New York City: Grand Central Terminal PROFESSOR EDWARD W. BERRY. Veterinary Bacteriology: PROFESSOR W. A. HAGAN .......................... 542 Annual Subscription, $6.00 Single Copies, 15 Cts. The American Association for the Advancement of SCIENCE is the official organ of the American AssociaScience: tion for the Advancement of Science. Information regardPdene R t Ctt h ing membership In the Association may be secured from A Proposed Revision of the Constitution of the the office of the permanent secretaryin the Smithsonian American Association for the Advancement of SciInstitution Building, Washington, D.C.