1. No toxic effects have been produced by the Hetol treatment. The veins selected for intravenous injection shewed no signs of inflammation or thrombosis. 2. In all the cases, marked improvement in their general condition was noticeable from the commencement of the treatment. Body weight and appetite increased in almost all of the cases. 3. The tuberculous foci became much less active, and, in some cases, all the signs of active cavitation disappeared. 4. Body temperature was reduced as the treatment proceeded, some cases sheaving a marked tendency to subnormal variation. The pulse as a rule, became less rapid. 5. Cough and sputum in every case was markedly diminished. No haemoptysis resulted, although two cases were subjected to the Hetol treatment, only a few days after haemoptysis had ceased. 6. Leucocytosis was obtained in all the cases in which the corpuscles were estimated; in one case, more than double the nor.nal count was reached. 7. The case of Tubercular Meningitis did not shew any marked improvement, but, I did not expect it in such a hopeless case, as, the treatment was me rely experimental. 8. Sweating ceased, as a rule, shortly after the injections were commenced. I consider that the Hetol treatment of Tuberculosis is worthy of a much more extensive and prolonged trial in this country than it has received in the past. In conclusion, I have to thatik the Members of the Medical Staff of the Sussex County Hospital, Brighton, for permitting me to carry out this treatment on their patients during my tenure of office as House Physician for the past year.