Annual tables of constants and numerical data

The first volume of the Annual tables of constants and numerical data, Chemical, Physical and Technological, compiled and published by an International Commission appointed by the Seventh International Congress of Applied Chemistry (see Science, August 4, 1911, p. 158) is now open to subscription. Subscription blanks, the terms of subscription and descriptive leaflets may be obtained from any one of the three American commissioners: Dr. G. N. Lewis, The Massachusetts Institute of Technology Boston, Mass., Professor G. F. Hull, Dartmouth College, Hanover, N. H., and Professor J. Stieglitz, the University of Chicago, Chicago, Ill. After January 15, 1912, the price of the volume is likely to be increased.