Since 1942 the beta-chlorethyl amines (nitrogen mustards) have been used in the treatment of neoplastic diseases of the lymphoid and hemopoietic systems. Alpert, et all, reports in human medicine, that this drug has been used to retard such diseases as: Hodgkin's Disease, chronic leukemias, poycythemia vera, lympho-sarcoma, transitional cell carcinomas and in certain undifferentiated carcinomas of the lung and testis. Remission in symptoms and reduction in size of tumor masses have been achieved in a significant number of patients suffering from these diseases.