Further Studies of the Etiology and Control of Dental Caries**Aided by a grant from the Rockefeller Foundation.From the Department of Bacteriology, School of Medicine and Dentistry, University of Rochester and the Rochester Dental Dispensary.Read before the Section on Histology, Physiology, Pathology, Bacteriology and Chemistry (Research) at the Seventy-First Annual Session of the American Dental Association, Washington, D. C., Oct. 8, 1929.