A disease, bluecomb, affecting turkeys of all ages, causing severe mortality in young poults, and characterized by a catarrhal enteritis, has been reported by Pomeroy and Sieburth (7), who described the associated clinical symptoms and gross lesions. Those workers initially reported that the transmissible agent could not be demonstrated in internal organs such as the liver, spleen, pancreas, heart and kidneys. Sieburth and Pomeroy (8) later determined that it was in fact possible to isolate an agent from the liver of infected poults. Demonstration of a filterable agent associated with this disease was reported by Tumlin et al. (11) and Sieburth and Johnson (9). The latter authors proposed that this condition be named transmissible enteritis. Since this term is appropriate and more descriptive of this disease, it is used throughout this paper. The first indication that the disease was bacterial in nature was given by Truscott et al. (10), who reported that a small, Gram-negative, anaerobic, pleomorph:ic rod was the etiological agent. This paper reports experiments showing that the etiological agent is in fact a member of the genus Vibrio and that the disease may be reproduced by oral administration of pure cultures of the Vibrio.