In a gravedo it is necessary for the first day to rest, neither to eat nor drink, to cover the head, and put wool round the throat; the day following to rise, to abstain long from drinking, or if he is obliged to do it, not to take above a hemina of water; on the third day to take a little soft bread with a small fish or some light flesh, and to drink water. If a person should not be able to forbear eating heartily, he must vomit: when he comes into the bath, he is to foment his head and face plentifully with warm water, till he sweat, then return to the use of wine. After which it can scarcely happen, that the same indisposition will continue. But if it remain, use must be made of cold, dry, and light food, as little moisture as possible, friction and exercise being still continued, which are necessary in every indisposition of this nature. CHAP. III. OF THE DISEASES OF THE NECK, AND THEIR CURE. From the head we proceed to the neck, which is liable to very severe diseases. Nor is there a more troublesome or more acute distemper than that, which by a kind of spasm of the nerves draws sometimes the head to the shoulders, sometimes the chin to the breast, sometimes stretches the neck _and holds it_ straight and immoveable. The first the Greeks call opisthotonus[CH], the second emprosthotonus[CI], and the last tetanus[CJ], although some with less accuracy make use of these names indiscriminately. They often kill within four days: if the patients have escaped that time, they are out of danger. [CH] ὀπισθότονος. [CI] ἐμπροσθότονος. [CJ] τέτανος. All these are cured by the same method; so far physicians agree. But Asclepiades believed, that blood should be let: some again affirmed that ought by all means to be avoided: for this reason, that the body then stood most in need of heat; and that this resides in the blood of the veins. This indeed is false. For it is not the nature of the blood to be peculiarly hot; but amongst the several things, which compose the human body, it most quickly grows either hot or cold. Whether or no it be proper to make this discharge, may be understood from the general directions, which were given about bleeding. But it is evidently proper to give castor, and with it pepper or laser. Then a moist and hot fomentation is needful. Therefore most physicians pour warm water frequently upon the neck. That relieves for the present; but renders the nerves more liable to cold, which is to be particularly avoided.