Note 811 — ON INJURIES OF THE HEAD.

This is an opinion held by all the ancient authorities. Some interesting cases in point are related in the First Book of the Continens of Rhazes. It was explained on the principle that the cerebral nerves decussate. (See Aretæus, on the Causes of Disease, i., 7.) Modern experience, in the main, is in accordance with the ancient on this point. Paralysis has generally been found on the opposite side to that which has received the injury. See Thomson’s Observations, etc., p. 52; Larrey’s Mem. de Chirurg., iv., p. 180; Hennen’s Principles, p. 301.