. [ 43 ] 
Mr. Ray, In his hiftory, afcribes that virtue to this 
powder j and alfo fays, it powerfully dries up foul 
ichorous ulcers j and many others commend it as a 
ftyptic befides. 
This, Sir, is what I thought neceflary to lay be- 
fore the Society, from the fame motive that I am 
fure would excite every member, if opportunities 
offered. I am, 
SIR, 
Your moft humble fervant, 
J. Parfons* 
XII. An Account of the State of the Ther- 
mometer^ on the Sth and ^th of February 
1755, in a Letter to John Canton, M, A. 
F. R* S, from Henry Miles, D, D. 
F. R. S. 
Dear Sir, 
Read Feb. 13,^ Thank you for the regifter of your 
*755- thermometer on the late cold days, 
and have inclofed that of mine, on the fame times ; 
which, if you pleafe, you may lay before the Royal 
Society, with the following remarks. 
The cold on the 8 th inftant, efpecially at mid- 
night, was extraordinary, if it be confidered, in how 
fhort a fpace of time it increafed to that degree you 
mention. And that this may appear, I have prefixed 
G 2 to 
