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A sweat is procured in two ways; either by a dry heat, or a bath. A dry heat is raised by hot sand, the laconicum, and clibanum(28), and some natural sweating places, where a hot vapour exhaling out of the earth is inclosed by a building, as there is at Baiæ amongst the myrtle groves. Besides these, it is solicited by the sun and exercise. These kinds are useful, wherever an internal humour offends, and is to be dissipated. Also some diseases of the nerves are best cured by this method. And the others may be proper for weak people: the heat of the sun and exercise agree only with the more robust; when they are falling into a disorder, or even during the time of distempers not violent, provided they be free of a fever. But care must be taken, that none of these be attempted either in a fever(29), or in the time of crudity.

But the use of the bath is twofold. For sometimes after the removal of fevers, it is a proper introduction to a fuller diet and stronger wine for the recovery of health: sometimes it removes the fever itself. And it is generally used, when it is expedient to relax the surface of the skin, and solicit the evacuation of the corrupted humour, and to change the habit of the body. The ancients used it with greater caution: Asclepiades more boldly. And there is no reason to be afraid of it, if it be seasonable: before the proper time, it does harm. Whoever has been freed of a fever, as soon as he has escaped the fit for one day, on the day following, after the usual time of its coming on, may safely bathe. And if the fever used to be periodical, so as to return upon the third or fourth day, whenever it has missed, the bath is safe. And even during the continuance of fevers, if they be of the slow kind, and the patients have splenetic disorders of long standing, it is proper to make trial of this remedy: on this condition however, that the præcordia be not hard nor swelled, nor the tongue rough, and there be no pain either in the trunk of the body or in the head, and the fever be not then increasing. And in these fevers indeed, which have a certain period, there are two opportunities for bathing; the one, before the shuddering; the other, after the fit is ended. In those again, who are long distressed with slow febriculas, either when the fit is entirely off; or if that does not happen, at least when it has remitted, and the body is as sound, as it generally is in that kind of illness.