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LI. A Letter from Monf. le Cat, F. R. S. to 
Dr. Mortimer, Seer. R. S. Lranfated 
from the French, by Tho. Stack, M. D. 
F. R. S. 
SIR, Rouen, April 3, 175©, N. S. 
Read Dec. 1 9>~¥”L/OOK. on it as a novelty in forgery, to 
,?SI ‘ find, ill, hernias by rupture, having 
never theleis a herniary fack ; adly, hernias by dila- 
tation, having two very dillindl facks. Wherefore I 
judged that thefe obfervations deferved to be com- 
municated to the Royal Society. 
I. 
A hernia by rupture , having never thelefs a Jack. 
O n the 1 8th of February 17,50, in giving a private 
CQiirfe of operations to my Englilh pupils, on the 
body of one Lewis le Clerc, a lad of eighteen years 
old, a weaver, of the parifh of St. Maclou, I difeo- 
vered the hernia reprefen ted in the figure. The apo- 
neurofis of the mu (cuius obli quits ext emus A A ran 
over the whole tumor BBC , and intirely cover’d it. 
At the anterior and lateral internal part of this tumor 
was the ring C DE lengthened into the fhape of a per- 
pendicular button-hole j which had nothing to clofe 
it but a cellular lamina , of which g, h , are jags, and 
which covered all this bag, as being a continuation 
of the cellular membrana adipoja. Through the above- 
inention'd button-hole appeared the cellular coat, 
with which the peritonaeum furniflics the fpermatic 
velfels. 
