' C ^is ) 
and neceffary Ufe in Concodtion, and makes al! the 
groder Parts, as they are attenuated, mix equally with 
the Fluid. 
Some think that the Bilioiijs Juice ; others, that the 
Spirits, are chiefly concern'd in this Afl'air. Gakn^ in 
his Book £16 Maturalihus Facultatihus^ makes it to be 
the EfFedl, not of one, but of feveral Caufes 5_^ as, aPi- 
tuitous Juice in the Stomack, the Bile, which ap- 
pears from what he has faid, and the Tranilator thus 
rendered : " Verum quanta ii (cihi) qui manii Junt^ ihj 
" qui inhasferunt^ magis funt alter at i 5 tanto etiam his 
magu iiy qui devorati funt, Siquidem tncomparaUlis 
*V erit horum alter at ionis exceffus^ ft & quce in ventre ejl 
" Pituita, & Bilisy & Spiritus, & Calor, & tot a Ven- > 
" trisfuhftantia, afiimentur. 
Some there are that will have the Food to be diflolv'd 
by a Menftruum, which isfupply'd from the Glands of 
the Stomack, or fome other way : But thofe that do fo 
far agree in the General, as to think Concodion is per - 
form'd by a Diflolvent, do differ in their Notions of the 
Nature of the Menftruum : For there are fome that fup- 
pofe it to be an Acid, which does erode the grofler Parts 
of the Food, and diflblves them in the fame manner as 
Vinegar, Spirit of Vitriol, or any fuch-like Acid, will 
diffolve even fo folid a Body as Iron. And it cannot 
be deny'd, but that Oil of Vitriol will diffolve Flelh- 
meat, and reduce it to a Pulp : But it is not to be fup- 
pos'd that the Fibres of the Stomack can admit any fuch 
ftrong and corroding Acid, without fomething to cor- 
redir, but it muft be injured in its Tone, and labour 
under great and extraordinary Pains. Neither does fuch 
a Menftruum, tho' it will digeft fome things, feem ca- 
pable of difTolving fo great a Variety of Things as we 
eat, efpecially when a great many of them are of a con- 
trary Nature. Some will have the Menftruum to be a 
M m i mtr&» 
