Note 4 — PRACTICAL UTILITIES
Reading edition
Among publications on chemical closets are the following: "Chemical closets," Reprint No. 404 from the Public Health Reports, U. S. Public Health Service, June 29, 1917, pp. 1017-1020: "The chemical closet," Engineering Bulletin No. 5, Mich. State Board of Health, October, 1916; Health Bulletin, Va. Department of Health, March, 1917, PP. 214-219.