“…With dark-medium phase contrast, the droplets appear as discrete milky white spherical bodies (FIGURES 15, 16). They color somewhat metachromatically in the living cell with the supravital dye, neutral red (Rosin and Biebergeil, 1904;Metchnikoff, 1905;Renaut, 1907;Arrigoni, 1908;Dubreuil, 1913;Shipley, 1919;Simpson, 1921;Sabin, 1923;Maximow, 1927Maximow, , 1928aRhoads and Parker, 1928;Dawson and Spark, 1929;Wilson and Cunningham, 1929;Bloom, 1928a, 192813;Hall, 1931;Lewis and Rubin, 1932;Tompkins and Cunningham, 1938;Lawrence and Todd, 1941;Schwind, 1950;Jackson, 1954). It is evident that these droplets have been known to us for a long time.…”