C 41 ] 
Four days after, this horfe was .killed, and Monf. 
la Foffe differed the arteries divided before ; and 
found in every one a membrane almoft tranfparent, 
with a grume in form of a cone, which clofed up 
the mouth of the artery very exadly ; the balls of 
which was outward, and the apex turned inward ; 
that he could obferve the motion of this membrane 
and cone correfpond with the arterial pulfation, ad- 
vancing and receding, while the horfe was alive ; 
and that in every fubjedl upon which he made the 
experiment, the fame effects were exadtly produced, 
without the lead variation. And further, in order 
to fee whether the fuppuration, confequent to the 
amputation, in the progrefs of a cure, might not 
open the arteries again, he let the ftrongeft horfe 
live till a perfect fuppuration came on, and found 
that it was not capable of hindering the cicatriling 
of the arteries. 
Thefe experiments, among others, were laid be- 
fore the Royal Academy of Sciences ; and they ap- 
pointed Monf. Bernard de Jullieu and Monf. Bou- 
vard to examine the truth of thefe fadls j and ac- 
cordingly Monf. la Foffe cut off the tail of a young 
mare, in their prefence, applying this powder, and a 
bladder over it ; and took off thefe dreffings in a 
quarter of an hour after. Three of the arteries were 
abfolutely flopped, but the fourth bled freely ; to 
which he applied fome of the powder with his fin- 
gers only, and the blood in this lafl artery was per- 
fedly flopped in fix minutes. 
Again j eight days after, the thigh of this young 
mare was cut off ten inches above the ham ; and in 
order to try whether the powder of Armenian bole 
VoL. 49. G would 
