The Interionic Attraction Theory of Electrolytes.

The Interionic Attraction Theory of Electrolytes: DR. Scientific Books: D. A. MACINNES ................................ 23 Adventures in Bird Protection: DR. HENRY B. Obituary: WARD. Elements of Diesel Engineering: PROJohnson. Deaths .............................. FESSOR THOS. C.POULTER .................................................. Scientific Events: Special Articles: Activities of the International Union of Biological The Origin of the After-feather in Fowl: PROSciences;-Awards for Exhibits at the Atlantic City FESSOR FRANK R. LILLIE and DR. MARY JUHN. Meeting of the American Medical Association; The The Influence of Electrolytes on the Oxygen DisRochester Meeting of the American Chemical Sosociation of Hemoglobin: DR. E. S. GUZMAN BARciety; Officers of the American Institute of ElecRON, RALPH MUNCH and DR. A. E. SIDWELL, JR. trical Engineers; Award of the Lamme Medal of The "Sodium Retaining Effect" of the Sex Horthe Society for the Promotion of Engineering mones: DR. GEORGE W. THORN and DR. GEORGE A. Education ....................................... 29 HARROP. The Coumarin Content of Melilotus den-. Scientific Notes and News.....................2... 32 tata: DR. R. A. BRINK and W. L. ROBERTS.. 38 Discussion: The Chemical Nature of "Ascorbic Acid OxiScience News.8 dase ": ELMER H. STOTZ, CARTER J. HARRER and PROFESSOR C. G. KING. The Selenium DehydroSCIENCE: A Weekly Journal devoted to the Advancegenation of a-Tocopherol: C. S. MCARTHUR and DR. ment of Science, edited by J. MCKEEN CATTELL and pubE. M. WATSON. Inferior Yields Obtained from lished every Friday by Crosses of Six-rowed with Two-rowed Barleys: DR. HARRY V. HARLAN, MARY L. MARTINI and HARLAND THE SCIENCE PRESS STEVENS. The Recrudescence of a Confusing TerNew York City: Grand Central Terminal minology: PROFESSOR FRANCIS RAMALEY. Human Lancater, Pa. Garrison, N. Y. Artifacts in Association with Horse and Sloth AncaSter,pa.0garris, N. Y. Bones in Southern South America: JUNIUS BIRD Annual Subscription, $6.00 Single Copies, 15 Cia. and MARGARET BIRD.......................................... 35 SCIENCE is the official organ of the American AssociaQuotations: tion for the Advancement of Science. Information regardThe ropoed Irigaion unne undr th oy ing membership in the Association may be secured from The Proposed Irrigation T l under the Rocky the office of the permanent secretary, in the Smithsonian Mountain National Park ........................... ...... ... 37 Institution Building, Washington, D. C.