Antarctic Adventure and Research . By Griffith Taylor. Appleton (New World of Science Series), 1930. 245 pp., 34 figs. $2.00.

Abstract

0.9 cc. of a 0.5% aqueous solution of malachite green and 11.2 cc. of a 0.5% aqueous solution of naphthol yellow are made up to 5,500 cc. with distilled water. The concentration of color in this standard is the equivalent of that produced by 11.873 mgm. of chlorophyll saponified to chlorophyllins and diluted with water to make 1 liter. It is suggested that for extended investigations a considerable quantity of satisfactory dye lots be purchased.