£ 719 ] 
The villous Coat, and the Fun&ions of thefe lu- 
te ft ines, being expofed to the Eye, afforded a Cir- 
cumftance ftill more curious and ufefuh Thefe Two 
Portions of Guts feemed to be Two large living 
Worms. They move here-and-there, twifting, ftiort- 
ening and lengthening themfelves like Reptiles. The 
lower Gut was much more alive, and founder. One 
time that I handled it, it twifted round my Fingers 
like an Eel. The upper Gut, that anfwered the Anus,, 
had lefs Motion, and was befet with Puftules. 
The Expulfion of the Faces engaged our particular 
Regard: We remarked in its Mechanifm Two Sorts 
of Motion. 
The Firft is the vermicular Motion, allowed by 
moft Authors. In this, the Gut firft fwells, and be r 
comes fmooth 5 then grows narrower, running into 
Wrinkles, and forming Waves the whole Length of 
the Gut, where thefe Two Motions happen alter- 
nately. The Streightening is performed behind, and 
upon the Excrements, to drive them down $ the Dila- 
tation happens before thefe Faces , in order to open 
them a Paflage : For Example : When the Faces were 
at the Orifice, through which we faw them iffue, 
this Orifice was fpread open. 
The Second Sort of Motion that we obferved in 
the Guts, generally preceded the one above deferibed. 
In this Motion the Surface of the Gut, being fwellcd 
and fmooth, was rendered uneven by many finall 
Imprefiions Cor Hollows] diftributed here-and-there, 
and which feemed to be formed by little local Con- 
vulfions, circumfcribed by the inteftinal Fibres. Thefe 
convulfive Imprefiions refembled, in little, thofe that 
are made in the Abdomen , upon contra&ing fome one 
5A2 of 
