Heavy Electrons in Cosmic Rays

Abstract

A LETTER under this title appeared in NATURE of April 16. In the table on p. 685, the values of the momentum of the particles a, b, c and d (col. 4) should have been given as 69, 110, 95 and 73 respectively, instead of 65, 107, 86 and 67. The errors arose from an unnecessary alteration of the completed table, under the impression that some early preliminary data had been quoted. The masses in the last column correspond to the correct values of the momentum. We would also add that the results of Nishina and his collaborators, referred to in the above letter are in accord with ours for particulars a, c and d rather than b.