1. Scribonius Largus Compositiones Medicae, Helmreich G, ed., Leipzig, Teubner publ., 1887.
2. The Home Journal, New York, Nov. 28, 1858, p 4.
3. Archer WH, A Manual of Dental Anesthesia, second ed., Philadelphia, 1958, p 22.
4. Davison MH, The Evolution of Anaesthesia. Williams and Wilkins, Baltimore, 1965, p 163.