Now these observations relate to the periodical returns of all fevers: but the several species of them are to be distinctly treated, according to their different natures. If it be a quotidian, for the first three days by all means abstinence should be observed; then food be taken every other day. If the distemper has become inveterate, after the fit it is proper to try the bath and wine, especially if, when the shuddering is removed, the fever remains. CHAP. XIV. THE CURE OF A TERTIAN FEVER. But if the fever be either a tertian, which has a perfect intermission, or a quartan, on the intermediate days, it is proper to walk, and make use of other exercises and unctions. Cleophantus, one of the more ancient physicians, in these distempers used to pour a great quantity of hot water upon the head of the patient long before the fit, and then to give him wine. Yet Asclepiades, though he adopted most of his precepts, has justly omitted this: for it is of doubtful effect. When there is a tertian fever, he says it is proper to administer a clyster the third day after the fit; on the fifth, after the shuddering to procure a vomiting; then after the fever, according to Cleophantus’s practice, to give the patients food and wine, while they are yet hot; on the sixth day to keep them in bed: for thus it will happen, that the fit will not return on the seventh day. That this may often answer is very probable. Yet it is safer in this order to make trial of these three remedies, vomiting, purging by clysters, and drinking of wine, for three days, that is, on the third, and fifth, and seventh; and not to drink wine, till after the fit upon the seventh day. But if the distemper is not removed in these first days, and it grows inveterate, on the day the fit is expected, let the patient keep his bed; after the fit be rubbed; and after eating let him drink water: the day following, when he takes no food, let him intermit his exercise and unction, and rest content with water alone. And this indeed is best. But if his weakness bear hard upon him, he ought both to take wine after the fit, and a little food on the intermediate day. CHAP. XV. THE CURE OF A QUARTAN FEVER.