“…The myelosclerosis has been thought to result from an unknown toxin (Donhauser, 1908), the irritative effect of hyperplastic mveloid tissue (Hewer, 1937), or atrophy of the marrow (Wolf, 1932); it has been found in association with haemolytic anaemia (Wyatt and Sommers, 1950), metastatic carcinomatous deposits (Thompson and Illyne, 1940;Erf and Herbut, 1944), and tuberculosis (Hewer, 1937;Stone and Woodman, 1938). Windholz and Foster (1947) sugge-sted the importance of Rh factor serological studies.…”