(Not official) The gray matter of a sheep's brain is sterilized, macerated in aseptic glycerin and filtered by the method of

D' Arsonval, being sterilized under carbon dioxide gas of a pressure of thirty atmospheres.

Dose, 15 m., 1.00 c c., hypodermatically.

Uses of Brain Extract.

Paul has made use of this for the treatment of various nervous disorders and claims excellent, although not always constant, results. Febrile reaction, prostration, and in some cases cardiac weakness, has followed its administration.