“…The two statements would be compatible if Goodman and Gilman had said " haemolysis " instead of " haemolytic anaemia," for a considerable degree of haemolysis has to occur to cause actual anaemia, provided that the bone-marrow function is not impaired (Crosby and Dameshek, 1955). Frank anaemia must be rare in dapsonetreated patients, for it is not even mentioned in a report about 10,000 lepers receiving the drug (Garrett and Corcos, 1952), though anaemia of unspecified type has been recognized (Allday and Barnes, 1951;Lowe and Davey, 1951;Dharmendra and Chatterji, 1953;Gilbert, 1953;Kruizinga and Hamminga, 1953;Alexander, 1955;Morgan et al, 1955;Garrett, 1956) and sometimes evidence of haemolysis (Lowe, 1950;Ramanujam andSmith, 1951: Smith andAlexander, 1959;Arnold, 1962). Smith and Alexander (1959) noted Heinz bodies in the red cells of four patients taking 100 to 200 mg. of dapsone daily.…”