Physical and chemical examination of paints, varnishes and colours. By Henry A. Gardner, director, scientific section, education bureau of the paint manufactures' association of the United States, and the National Varnish manufactures' association in corporation. Pp. 218 and suppliment of about 150 pages consisting of circulars issued by the interdepartmental committee, standard specifications board, U. S. Government. Washington: P. H. Butler, 1845, B Street, N.W., 1922. Price $9