CHAP. I.

Of a Feaverish heat.

A Feaver is so called from the Latine word For∣veo,* because it is a Fer∣vor or Heat affecting the Body; the Gr•eks call it 〈 in non-Latin alphabet 〉, that is to be inflamed or taken with a Feaver, sometimes it is called 〈 in non-Latin alphabet 〉〈 in non-Latin alphabet 〉, that is a fiery habit, or fiery disposition of the Body, and by Hip∣pocrates in the first Book Epidem Com∣men. 3. text 18. 〈 in non-Latin alphabet 〉▪ that is, fire it self.

Page  2 It is a praeternatural heat kindled in the heart,* as in its proper subject, pri∣marily and per se hurting our actions, which heat by the mediation of bloud and spirits, through the Veines and Ar∣teries, is diffused through the whole body.

Now,* all heat is either Natural, or ascititious, the Natural is either im∣planted and fixt, or elementary and fluid, and a Feaver cannot consist in either of these, because the implanted is fomented by the primogenious moysture, whose original is heavenly, and once depeculated or wasted, can∣not be repaired; nor in the elementa∣ry, because this by its temper doth help and cherish the implanted, and further it in concocting and assimila∣ting the nourishment which is to bee converted into our substance; this heat Phisicians call influent, because with the spirits and bloud from the heart, it is carried by the Veines and Arteries to all parts of the body; a feaverish heat then is in the ascititious saith Galen, Comment. on the sixth book, Epidem. Hippo. text the 28.

An ascititious heat is Three-fold;*Page  3 the first in respect of the other is said to be simple, that is a bare exuperan∣cy of heat, which is thus ingendred▪ the Elementary or fluent heat by a daily increase receding from its tem∣per and mediocrity becomes excessive, so that that which was natural, by de∣grees becomes unnatural, and there∣fore vitious, and offensive to nature, doth hurt her operations; and in this ascitious heat are your Ephemerae or Diary Feavers, and unputred Syno∣chus. The second heat different from the former is acrid and mordent, ari∣sing from putrified matter, which though it be not very burning hot, yet favouring of the condition of the mat∣ter from whence it proceeds, is prae∣ternatural and burdensome to the im∣planted heat, and in this are putrid Feavers both continual and intermit∣ting, compound, erratick, and con∣fused. The third ascitititious heat is wholly malignant and pernicious, cau∣sed from some venenate or pestilent matter, not from the exuperancy of its quality, as the first, nor from putre∣faction, as the second, but is substantially Page  4 different, and inimicous to the vital and implanted heat.