“…In spite of its insecure theoretical foundation, it has proved a useful drug. It is of great value in Hodgkin's disease, myelomatosis, chronic lymphatic leukaemia, and reticulosarcoma, and often of benefit in mammary and ovarian carcinoma (Coggins et al, 1959;Haar et al, 1960;Matthias et al, 1960;Fairley and Simister, 1964). It leads to alopecia more readily than other alkylating agents, and irritant metabolites excreted in the urine are apt to produce a chemical cystitis.…”