This study was undertaken as an extension of two previous reports on the problem of non-sporulating, anaerobic bacilli; namely, that of Thompson and Beaver, (1931, 1932) and that of Beaver, Henthorne, and Macy (1934). The object of this research was the investigation of the morphologic, biologic, and agglutinative properties of several Gram-negative species of nonsporulating anaerobic bacilli; ...