Comparison of Procaine Hydrochloride and Procaine Borate (Borocaine) as Local Anesthetics**From the College of Physicians and Surgeons, A School of Dentistry.Supported in part by grants from the Committee on Research of the California State Dental Association and from the Research Commission of the American Dental Association.Read before the Section on Oral Surgery, Exodontia and Anesthesia at the Seventy-Eighth Annual Session of the American Dental Association, San Francisco, Calif., July 14, 1936.