Key points are not available for this paper at this time.
Abstract * Received in the Editorial Office on March 20, 1937. 1 Prepared with the assistance of the Works Progress Administration Project No. 165-97-6999, W. P. 6041-1025. Notes * Received in the Editorial Office on March 20, 1937. 1 Prepared with the assistance of the Works Progress Administration Project No. 165-97-6999, W. P. 6041-1025.
Pintner et al. (Wed,) studied this question.