my opinion, is incureable; but the others may be cureable, if there be not too many varieties of distempers, or irregular motions. And as for a Fever in the solid parts, Letting of blood, and taking away the humor, may cure it; for the veins being empty, suck the heat out of the solid parts, which solid parts cannot draw out a distempered heat in the veins, and the opening of the veins gives vent to some of the interior heat to issue forth: Wherefore it is very requisite, that in all sorts of Fevers, except Hectick-Fevers, blood-letting should be used, not onely once, but often; for 'tis better to live with a little blood, and a little strength, which will soon be recovered, then to die with too much, or too hot and distempered blood. Also Purging, but especially Vomiting is very good; for if the humors be in a Feaver, they may infect the vital parts, as also the blood; but if they be not in a Fever, yet the solid parts or blood may do the same, and so make the contagion greater; for the humors are as the moveables in a house, which ought to be cast out if either they or the house should be on fire; and if a disorder proceeds from the error of a particular part, then care must be taken to rectifie that part for the health of the whole: Wherefore Physicians use in some cases Blood-letting, in some Purging, in some Vomiting, in some Bathing, in some Sweating, in some Cordials, especially after much evacuation, in some they prescribe a good diet, and in some they mix and prescribe partly one and partly the other, and in some cases they are forced to use all these remedies; for though great evacuations may cause weakness, yet they often save the life; and there is no Patient, but had rather lose some strength, then life; for life can gather strength again; but all strong men are not always long lived, nor all long-lived men very strong; for many that are but weak, will live to a very old age. Lastly, concerning what your _Author_ says, that there is but one Choler and Phlegme in Nature; I answer, That is more then he knows: for all that is in Nature, is not nor cannot be known by any Particular Creature; and he might say, as well, the same of particular Metals, as that there is but one sort of Gold or Silver, when as there is great difference in the weight, purity, colour, and gloss, of several parts of Gold and Silver; Neither is all Gold found in one place; but some is found in Rocks, some in Sand, some in Mines, some in Stones; and so Silver, some is found in the bowels of the Earth, some in the veins of Stones, and some in other Metals, as Lead, and Iron, and some in Coals. And the like may be said of Choler and Phlegme; for they may be several in several places or parts of the body, and be of different colours, tastes, odours, and degrees of heat or cold, thinness or thickness, or the like; for though there is but one Matter in Nature, yet this onely Matter by its several actions or motions changes into several figures, and so makes several