Of Birds, 
ThelaftUfe, I lhall name, may be this, That in cafe the 
meat, or the Excrements in the lower Guts fhould be at any 
time fo dry and hard, as too flowly, and not without much 
ftrefs to the Guts, to defcend 5 the Caecum is as a Clyfter-Bag, 
always ready with its liquid Content, to be in fome part 
thereinto injected. For which purpofe, it ufually makes an 
acute angle with the upper Guts, and opens directly into 
thofe below it. 
The Make of the Colon, with other Ufes, alfo anfwers 
to the greater need of Retention. Either becaufe of the up- 
right pofture, as in a Man 5 or frequent and fpeedy motions, 
as in a Horfe or Hare : where,without the Cells of the Colon, 
to retain the Excrements from the Reclum, there would be 
a continual Conatus egerendi. 
The Return, or rather Stercoraceum of a Cat, being pecu- 
liarly of fo great a bulk 5 1 will conclude with a Conjecture 
of one Ufe of it : and that is, To be as a Counter-poife to her 
Head: whereby, from what height foever fhe falls, fhe full 
lights upon her feet. 
CHAP. VIII. 
Of the Stomachs and Guts of BIRDS. 
BEcaufe that many particulars will here occur, which are 
intelligible from the former Defcriptions, and have 
already been explain'd 3 I (hall therefore be the Ihorter. 
Of about Forty, which I have open d, I ftiall defcribe thefe 
Thirteen that follow, fc. of a Cajowary, an Owl, a Cuckpw, ai 
Vunghil'Cock^ , a Tame Pigeon, a Jackdaw,i Starlings Tellow- 
hammer, a Bull- finch, a Wry-neck^ > a Bunting, a Reed-Sparrow^ 
and a Houfe-S wallow : and figure them all, but thofe of a 
Cuckpw. With Notes upon others, as I proceed, 
Ofd Cafowdry. 
The CASO WARY hath no Crop. But a wider Gulet, I 
fuppofe,as well as Guts,than in any other Bird. Far greater 
than thofe of an Oftrich 5 although the Body be much lefs. 
The Gulet 3 where wideft,or near the Throat,about five inches 
over; 
