[ 800 3 
with regard to numbers, and, if I have committed 
any midake, I hope your ufual goodnefs will ex- 
cuie, 
* Dear Sir, 
Sion-College, 
Novem. 20, Your mod obedient fervant, 
1754 - 
W m . Brakenridge. 
XCVI. A Letter from Mr . William Watfon, 
F. R. S. to Charles Gray, of Colchefter, 
Ffq\ F. R. S. in relation to a large Calcu- 
lus found in a Mare . 
Dear Sir, London, July 26, 1754. 
Read Nov. z\, tt Take this opportunity, by your means, 
1/54 JL °f fending back to its owner, who is 
fo unwilling to part with it, the done taken out of 
the belly of the mare, which you were fo obliging 
as to fend me. I fhould have been glad indeed to 
have been informed precifely, from what part of the 
abdomen of the mare it was taken ; but this you 
was prevented from tranfmitting to me, on account 
of the ignorance of the perfon, who opened the 
mare, and who faid, that the done was found in or 
near her kidneys ; though I am of opinion it was 
formed in the intedinal tube. As there are at prefent 
no ordinary meetings of the Royal Society, I was 
prevented from laying this done before that learned 
body : I diewed it however to feveral of the gentle- 
men, who, with myfelf, agree, that a done, large 
as 
4 
