nT<?nr, fince they are all prepared out of the Chyle into 
whic iS rhe Food is refolved by the Aftion of the Stomach:* 
He judges this will not be denyed by thofe who believe 
the five C:iyrnical. Principles to be ingredients in the com- 
pofition ot all Natural Bodies, becaufe they are refolved 
into them by the operation ot the Fire. Anotb^rjnvin- 
cible P^eafooj in our Authors opinion, are the Paiticlesof 
Bile blended and mixed with the mafs of Blood, and 
convey 'd to all parts of the Body by the fame Canals with 
iha^: Ci^imibn Liqitor, thoft dees not appear to our fences, 
till the Jch/l or Glands ot the Liver are obftrufted, for 
then being unable to pafs off, it regurgitate^,- iif»d infefts 
the Blood, and all the Animal Juices, and may be dif- 
cerned by its Tafte and Colour. • This is the cafe of the 
Urine, Sweat, d^v. whofe refpeftive Cclatoric^do not 
- produce, but nieerJy percolate them from the Blood, of 
whofc promiCcuons mixture its mafs is formed. Nor caa 
the difference of Colours, as Ked, Golden, Tranfparent, 
be an objeaion, fince the leaft Change or New Difpofiti- 
^nof itsfuperlicial partS; is fafficient to give anew modi- 
Tiptiori of xhx fight^ and create a different' iifft^ft: 
'Haying thus laid down his Principles;' M. Qavet in his 
feccnd part applies thefe to inveftigate the nature of Fe- 
vers,ar;d -the Accidents which attend them-There are fome 
dangerous and fatal Difcafes.which for want of due confi- 
deratjon ar: cdled Inward and Mahgnant Fevers.Here the 
mars of Bbcd is at once cofTupted, and its Conftituticn 
ruined, '^nid yet there is no oblcrvable qaicknefS of the 
Fulfe. Fcr this reafon, wanting the Charafter and Mark, 
onr Author excludes them the ^Genus oi Fevers, into 
whofe Nature and Caufcs he proceeds to enquire. ' 
When the Animal Liquors begin to ferment and fwell, 
they caufe a diftenfion of the Veffels in which they are 
contained ^ and hence follows the neceifity of a frequent 
Rulfe;, for the Animal Spirirs being -unable to ccntraft 
the Arteries, and flrcighten their Channels, by reaforr of 
