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Of purging.

When the belly is costive, so as to evacuate very sparingly, and from that cause flatulencies, dimness of sight, pains of the head, and other disorders of the superior parts, grow troublesome, then ’tis fit to take a purge: for what assistance can rest or abstinence afford in these disorders, of which they are the principal causes? He that wants to be lax, let him first use such food and wine as produce that effect: and if they don’t succeed, let him take aloes. But purging, though it be sometimes necessary, yet, when it is frequent, becomes dangerous; for thus the body will be habitually deprived of its nourishment, and by that means become valetudinary, for a body in a weak state is the most liable to all kinds of distempers.

What heats and cools the body.

The body is heated by unction, salt water, and more so if it be warm; all salt provisions, and austere wine. On the contrary, it is cooled by bitter and fleshy substances, taken with an empty stomach; the bath after meals, and sleep, unless it be too long, and all acids; the coldest water; oil, if it be mixed with water; and lotus(26).