Cosmic Rays on McKinley. Results of scientific experiments carried out in the course of “Operation White Tower” are described in The Physical Review for 15 June 1948.* The title of the article is “Cosmic-Ray Investigations on Mt. McKinley”; and the authors are Thomas D. Carr, Marcel Schein and Ian Barbour, of the Department of Physics, University of Chicago. In closing, they pay special tribute to Bradford Washburn and H. T. Victoreen.

*See Bradford Washburn, “Operation White Tower,” A.A.J., VII (April 1948), 40-58. Results of this successful cosmic-ray study appear likely to lead to further observations in the same area.