Since the advent of sulfanilamide, its administration has been tried in the treatment of many diseases which have been more or less resistant to other methods. Results in cases of erysipelas have been striking in our hands, as they have been in other cases in which infectious lesions were suspected to be of streptococcic origin. Welsh1was able to isolate from the nasopharynx of patients with pemphigus streptococci which were virulent for five species of animals and was able to produce lesions consistent with pemphigus in a fair number. Since he was able to produce pemphigoid bullae by intradermal and subcutaneous injections of these dead streptococci in patients with pemphigus, we decided to try this new drug in the first case of pemphigus we observed in which no previous treatment had been given. REPORT OF CASE On Jan. 30, 1938, a farmer aged 48 was referred to us.