STUDIES ON THE ETIOLOGY OF TRACHOMA.

A bacillus which corresponds closely with the description of B. granulosis Noguchi was isolated from 1 of 5 typical cases of trachoma in Chinese. Inoculation of suspensions of this bacillus into the eyelids of M. sinensis monkeys produced scarring and contraction of the tarsal cartilages with the development of a few conjunctival follicles in 2 out of 5 animals. The possible relations of the observed lesions with human trachoma have been discussed.