“…The lack of relation between sideroblastosis, marrow activity and marrow haemosiderin has been investigated by a number of authors (Pappenheimer, Thompson, Parker and Smith, 1945;Mills, Huff, Krupp and Garcia, 1950;Remy, 1952;Kaplan, Zuelzer and Mouriquand, 1954;Mouriquand, 1958;Bjorkman, 1956), and there is little agreement concerning the factors that contribute to their rise and fall. Hutchinson (1953) believes that they can be used to differentiate between hypochromic anaemia associated with iron deficiency and those due to infection.…”