Himalayan Cosmic‐Ray Expedition Available to Purchase

In a brief report in Nature for April 12, 1953, K. B. Mather of the physics department of the University of Ceylon describes an expedition to the Garhwal Himalayas carried out in 1951 to investigate cosmic radiation with nuclear emulsions. The plates were exposed at an altitude of 18,400 feet at the Mana Pass on the border of India and Tibet, although the party reached an altitude of 19,150 feet in the course of the expedition. Mather points out that a number of reasonably accessible sites where high‐altitude stations of a temporary nature could be established at altitudes up to 20,000 feet exist in the Himalayas near the Tibetan border, and that electronic equipment as well as emulsions can be used at such stations if funds for porters are available.