“…We have therefore tested a number of antiseptics by a method first suggested by our colleague Dr. W. D. Foster which is much more economical of time, glassware, and effort than the use of threads (Koch, 1881), garnets (Kr6nig andPaul, 1897), coverslips (Jensen and Jensen, 1933), glass slides (Johns, 1947), glass cylinders Mallmann andHaynes, 1945), or metal surfaces (Neave and Hoy, 1947;Stedman, Kravitz, and Bell, 1954).…”