4o8 ESSAYS axv OBSERVATIONS 
fices of veins appeared. The outer /amina of 
the chorion, was {cabrous, fucculent, fomewhat 
villous, of a pale flefhy colour, and not at 
all tranfparent. The convoluted arteries, 
which I formerly faid had adhered to it, 
when the womb was feparated from it, 
were taken off with a pair of difle@ing for- 
ceps, without any difcernible tearing of fi- 
bres.. Crofs incifions were then made into - 
this outer covering of the ovum, and it was 
laid to a fide, when we faw the fecond /amel- 
Ja or clear tranfparent proper chorion, which 
feparated almoft of itfelf, from the outer 
membrane; they being only connected toge- 
ther by a very fine and tender cellular fub- 
ftance. This internal Jamella or proper cho- 
rion being cut thro’, the fine ammzos appeared, 
thro’ which was feen the foetus {wimming in 
its waters. 
’ In Tas. vi. fig. 1. are reprefented AAA, 
the edges of the cut wferus, with large ob- 
long orifices of the cut empty collapfed veins, 
and of the {maller round inje@ed arteries ;— 
B, the forepart of the wferus turned down be- 
tween the thighs ;—CC, part of the outer /a- 
mina of the chorion;—DD, part of the inner 
lamina of the choricon;—E, the emnios un- 
opened, 
