Abstract :
The 27th annual meeting of the American Physical Society will be held in Kansas City, December 28–30, 1925, in conjunction with Section B — Physics — of the American Association for the Advancement of Science. Professor K. T. Compton will give the annual address, on “Dielectric Constants and Molecular Structure” and this will be followed by a symposium on relativity, which will include papers by Prof. H. G. Gale of the University of Chicago, Prof. A. C. Lunn, also of the University of Chicago, and Dr. Charles E. St. John, of the Mt. Wilson Observatory.