( ii85 ) 
Mind, Deliquiams by the efFufaon of Blood, or other- 
wife. But if the Blood is once become ftagnant in its Vef- 
fels (efp^ciaily the Arteries) the part is in no foiall danger 
of a Mortification, unlefs its neighbouring Veffels, which 
enjoy the motion of the Blood, drive on the ftagnant Blood, 
and it efcape by the fides of the Veflels that retained it. Ex- 
perience affures us, that in Bruifes when the Blood is ex- 
tra vaffated, it goes off either by TranfcoUtion or elfe 
caufes an Ahfcefs 5 for there's little reafon (in my^ opinion) 
to rufpeS: any of the ftagnant Globules of the j^lood wilt 
be fit to re-unite with the CirculaHng Mafs. But that the 
Blood after ftagnarion in its Veffels will fometimes pafs 
their fides, appeared to me from the following Experi- 
ment* 
On viewing the Mefentery of a Dog when living, in 
ivhich I had before feen the Blood palling the extremities 
dI the Arteries and Veins ^ I confider'd how to prefer ve the 
Blood in its Veflels, that I might afterwards at any time fee 
it in their Extremities when ftagnant : For this end I 
:aus'd feveral parts ot the Mefentery to be tyed on as many 
pieces of fmall round Fill-Boxes^ cut tranfverfely like little 
ioops ^ on which, Fortieths of the Mefentery were extende4 
ike the head of a Drum'^ and on viewing them afterwards 
«^ith my Microfcope, I found the Extremities and Branches 
3f the Blood Veffels charged with Blood, which before ap- 
peared in Motion ^ fome of which parts of th^ Mefentery 
[ ftill keep by me. On laying one of thefe Farts of the 
Mefentery (thus expanded) in Water, the ftagnant Blood in 
x$ Veffels difappear'd 3 but on juft immerfing another of 
rhofe Pieces in Water, I could with my Naked Eye fee the 
lagnant Blood diffufed in the Interftices ot the Blood Vef- 
fels, and between the Membranes of the Mefentery : Hence 
i*s evident, the Blood may pafs the fides ot its P'cjfels after 
^agnation in *cm 5 but whither it9 Globules are broken, or 
what figure renders them fit to pafs thofe pores that are in 
:he fides of the Veffels, I leave to the Inquifiiive 5 bur we 
nuft return to our Taluks, and nrft of that of die 5;(?cv// ot 
iit Vsna Cavd. U u u a u u u As 
