Abstract
An increasing inhibitory effect of Na sulfadiazine in cones, of 50,100, and 200 mg.% was observed during 1 week''s growth of Bact. tularense on blood dextrose cystine agar plants. Cones, of 10 and 20 mgs.% had no effect. The amts. of H2S produced were proportional to the degree of growth.