[ * 7 8 ] 
of cookery, it may perhaps be fuppofed the effedt 
of heat : but this can never be the cafe, as (lie has 
ever been well clad ; and the change is as obvious in 
the parts protected from the adtion of that element, 
as in thofe the moft expofed thereto. As an emunc- 
tory, the Ikin feems to perform its office as well as 
poffible, the fweat with the greateft freedom indif- 
ferently pervading the black and white parts. The 
effects of a blifter I mentioned to you I am yet a 
ftranger to, as that, which I applied upon the outfide 
of the arm, did not anfwer the intended purpofe : 
whether this was owing to its being laid upon a part 
too much expofed, or that the cotpus reticulare be- 
ing deftroyed, there may be fuch an adhefion of the 
cuticle to the cutis, as may render them infeparable, 
a fecond experiment muff determine. If, upon your 
fending this to Dr. Ruffell, he, or any of his learned 
acquaintance, to whom he may communicate it, 
ffiall think any future experiments neceffary, I fhali 
be glad to execute them under their diredtions, not 
only for my private fatisfadtion, but in order to con- 
vince you, how much pleafure I take in doing every 
thing, that may oblige Mr. Williamfon or his friends. 
I am, Sir, 
Your obedient humble Servant, 
Leonard-Town, 
6th Sept. 1 758. 
James Bate, 
Surgeon in Maryland. 
XX. The 
