Jaw, or Jaw-bone, in ana-tomy, is the bone which contains the teeth within their sockets.

The jaw is liable to a variety of disorders, occasioned by colds or other accidents : the most fatal are, 1. The dislocated and fractured jaw, the treatment of which, being merely chirurgical, is foreign to our purpose ; and, 2. the Locked Jaw, or Trismus traumaticus, which is a spasmodic rigidity chiefly of the under jaw.

This alarming complaint attacks persons of all ages, and is frequently fatal in the Last and West Indies. It is generally occasioned by sudden colds ; wounds of the nerves, and nervous parts of the body, however slight; drawing of the teeth, and affections of the gullet or wind-pipe. - Suppression of the erysipelas or rose, hysterics, rheumatism, worms, and the bite of venomous serpents, are among the many causes of this dangerous disorder.

Opiates administered in large doses have, in some cases, been successfully employed ; though the same medicine will also produce this malady. The warm bath, electricity, the free use of musk, oil of amber, and asa-foetida, together with amputation of the wounded part, if there be the least symptom of mortification, have all been found of occasional service. In hot climates, Dr. Lind recommends immersion in cold water ; and in the first volume of the Transactions of the American Philosophical. Society, M. Tallmann advises affusion of cold water on the body of the afflicted. During the con-tinuance of this spasmodic disease, the patient can only receive sustenance through his teeth, or by means of nutritive clysters. His food ought, therefore, to consist of the most nourishing broths and jellies : thus,' by the judicious application of the different remedies above stated, and by carefully avoiding to take cold, the locked jaw may probably be restored to its former situation, in the course of a few days.