1456'] 
trivaiice and ftrudture of this latter Gut, which is a Vhamme 
• non that deferves further Confideration : it is I fay to he no- 
ted, that immediately under the valve of that Gut, in this 
Animal, are certain fpiral Fibers, which make a kind of fcrew : 
now it feems to me, that the Excrements, after they are 
brought to a due Confiftency by the neceffary ftay they make 
in the C^cum^ and being carried out thence into the fpiral 
foldings, or fcrew of the Q^^lon , cannot defcend in a per- 
pendicular, as formerly .through the fmall Guts , but ftill 
gently ghde, and that very leifurely by the winding of the 
Icrew 5 whence arifes the Figure. 
And I am apt to believe^ that if the C^cum of a Rat, or 
any of the firft kind of Animals mentioned, was tyed up, 
or otherwife hmdred from its receipt, the Animals would 
unavoidably fall into a Dtarrh&a : there being I fay no reafon, 
that I can forefee, why the yet liquid Excrements or exhauft- 
ed Chyle, fuch as we conftantly find it, even at the very 
bottom of the fmall Gut,ihould ftop at the entrance of the Co- 
ion^^ and not fpeedily glide through the fcrew, in a down- 
right defcent, that is, elude the devife of Nature, and make 
yhe configuration of that fo curioufly contrived part ufelefs ; 
we, I fay, fuppofing the experiment to have taken away the 
neceffary Dii/^rri^///^r/3 and Repofitory of the unprepared Ex- 
crements, in tying up the C<ea^?^. 
; I know not whether the Obfervation will hold good in ge- 
neral Terms, becaufe I fay I have not yet purpofely examined 
divers Animals in Nature, ^i'^ That where ever there are e- 
iegantly figur d Excrements of tlie firft kind,there is ever a ca- 
pacious Cacum-, and on the contrary the lefs accurately figured 
and more hquid tJie Excrements of any Animals are,the lefler 
the C£ci4mpr none at all This is certainly true,that fome Ani- 
mals, which are naturally loofe/ have no Cdcum at all, or 
very little as theT'^/jp/^,the Echim/s terrefi^, the Gulo, and amongft 
Birds the Wood-pecker kind, the Hawke kind^ &c. 
We fhall not trouble you at prefent with our obfervation's 
€9ncerning Figure of Excrements in the divers Species of A- 
nimals already by us exammed ; nor of the place of their 
being fo figured. Alfo we fhall pafs by at prefent our thoughts 
of the manner of the Cacums reception^and preparing the Ex- 
crements for the Colon. - 
We like wife forbear to ofFer fome doubts we have, con- 
cerning Natures end, in the neceffary Figuration of the Ex*- 
-'^■■^j ;k;.. [LiL.lL ^v. . ' : ^ Crem^tl 
.'iniivn» CI 
