In the literature on the putrefactive, anaerobic bacilli there is, as Reddish and Rettger (1922) have pointed out, much confusion (1) Bac. putrificus verrucosus Stamm 22. (2) Bac. putrificu.s verrucosus Stamm 58. (3) Clostridium putriJicum (Bienstock) Bergey et al.] No. 3559 (Hall collection No. 38) (4) Clostridium putriflicum (Bienstock) Bergey et al. No. 679 (5) Clostridium putrificum Sturges No. 2221 (6) Bac. cochlearius Douglas, Fleming and Colebrook. T. M. I. H. C. No. 535 Received from Prof. Zeissler, Altona-Elbe. Obtained from the American Type Culture Collection. Received from the National Collection of Type Cultures, London.