[ 48 ] 
an appropriated medicinal Fluid ; which was, with- 
out any Difficulty, retain’d within the Cavity near 
two Hours, and, at the Clofe of the Operation, drawn 
all off at once, without the lead Symptom of a Syn- 
cope from Inanition; of which I fhall beg Leave to 
acquaint you further, when I fee how fhe holds it, 
as well as of what elfe remarkable may occur in the 
Courfe of my Practice. I am, with the greateft Re- 
gard to the Learned, Worthy Gentlemen of the 
Royal Society , 
SIR , 
I'our mojl obliged , 
Truro, May i z . 
1744. and obedient humble Servant , 
Chr. Warwick. 
V. A Letter from John Bevis, M. D. to John 
Machin, Lfq\ Secret. R. S. &?c. contain- 
mgfome Obfervations concerning Mercury. 
SIR, 
Prefented May g ’’HE Obfervations to which the in- 
1744 JL clofed Computations are made by 
Mr. Morrifs from lomewhat more correct Elements 
than thole in Dr. Halleys Tables, were carefully 
taken by myfelf, with an excellent aftronomical 
Sector of five Feet Radius. You will perceive how 
far I am limited, by my Friend’s Requeft ; fo muft 
intreat you, if you think it worth while, to inform 
the 
