. An important contribution to the field of chemotherapy of bacterial infections was made by Klarer2 who noted that p-aminomethylbenzenesulfonamide was effective against anaerobic clostridia commonly associated with war-wound infections. The compound was furthermore found to be unaffected by p-aminobenzoic acid, an attribute not associated with the common sulfanilamides, ie, sulfanilamide, sulfapyridine, sulfathiazole, et^.^ These observations ...