The Stomachs and Guts. 
CHAP. V. 
Of the Vfes cf the Quiet and Stomachs of Quadrupeds. 
AndfirH of the Gulet. 
IN fpeaking hereof, I (hall, as in the Anatomical Part, inflft 
chiefly on thofe Particulars which have been omitted by 
others. 
It may therefore firft be noted of the bore of the Gulet, 
That it is not every where alike anfwerable to the Body or 
Stomach. As in a Fox, which both feeds on Bones, and fwal- 
lows whole, or with little chewing 5 and next in a Dog, and 
other Oflivorous Quadrupeds, 'tis very large 3 fc. to prevent 
a contufion therein. Next in a Horfe 5 which though he 
feeds on Grafs, yet fwallows much at once, and fo requires 
a more open paffage. But in a Sheep, Rabbit, or Ox, which 
bite (hort, and fwallow lefsatonce, 'tis fmaller. But in a 
Squirel, ftill leffer, both becaufe he eats fine, and to keep him 
from difgorging his meat upon his defcending leaps. And 
fo in Rats and M/Ve,which often run along Walls with their 
Heads downward. 
TheThicknefs of the Gulet is alfo different. So in a 
Weejle or Pole-Cat, which eat no Bones, more Membranous 
or Skiny. In Dogs more Mufcular, greater force being re- 
quired to carry down Bones, than Flefh. But in Sheep, 
Hogs, Com, Horfes moft of all 5 for three Reafons : Firft, 
For that Grafs, and efpecially Hay is lefs llippery, and apt 
to clog by the way. Secondly, Becaufe they eat continu- 
ally, and fo the Gulet is in continual action, which it could 
not bear without pain, were it not made fturdy for hard la- 
bour : in like manner, as are the Mufcules of the Chaps, 
and efpecially the Mafeter, in all the faid Animals. Thirdly, 
For that all they eat and drink (becaufe they hold theirHeads 
down) muft be made by a greater force to afcend into their 
Stomachs. Whereas in Carnivorous Animals, and efpe- 
cially a Man, it paffeth by defcent. And there are few, 
but may remember, how difficult it was, when they were 
Boys, to drink with their Heads down at a Spring. And al- 
though Dogs drink with their Heads down, yet they can 
