The Ether Concept in Modern Physics.

Obituary: Southwest: PROFESSOR J. G. BROWN. The BelaHarvey Washington Wiley: DR. W. D. BIGELOW ...... 311 tion of the Thyroid and Pituitary Glands to Moulting in Triturus viridescens: DR. A. ELIZAScientific Events: The Sixteenth International Geological Congress; BETH ADAMS, LEAH RICHARDS and ALBERTA KUDER 322 Harvard Forest Fund; Woman's College at Duke University; Mining and Metallurgical Advisory Science News.x Boards; The International Institute of Agriculture ........................ 312 Scientific Notes and News....................... 315 SCIENCE: A Weekly Journal devoted to the Advancement of Science, edited by J. MOKEEN CATTELL and pubEuphany: PROFESSOR C. E. SEASHORE. Nomenclalished every Friday by ture: PROFESSOR Z. P. METCALF. Admiral WalkTHE SCIENCE PRESS er's Appreciation of the Work of Colonel Gorgas: FRANCES PICKERING THOMAS ....... .............. 318 New York City: Grand Central Terminal