219. CRATAEGUS.—The fruit of Cratae'gus oxyacan'tha, English Hawthorn. Heart tonic. Its value as a cardiac stimulant and tonic has recently come to, the medical profession through Dr. M. C. Jennings, of Chicago. Dose of fluidextract: 10 to 15 drops (0.6 to 0.9 mil).

A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.