* $2 2 Mr. hutchins’s Experiments for afoertaini'ng 
fo engaged in mixing it with the fnow, that I did not fee 
the thermometer in the apparatus fink to 40% which mule 
have been very hidden, beenufe I was but one minute before 
I obferved it I could obferve no alteration in the quickfilver 
in the cylinder when it was frozen, and intending to make more 
experiments, I was unwilling at this time to break the glals. 
The time was taken by a good watch which thews feconds, 
and (which however I apprehend can be of little confequence) 
about f 1 o ,f too fift by apparent time. I had two afiidants 
one to repeat audibly every fecond,. and the other to write 
down the time and the obfervations as. fad: as I made them. 
The obfervations were taken down with a pencil, but copied 
fair with ink into my note book : they were compared the fame 
day the experiment had been made, to avoid midakes; and 
thefe remarks were written at the fame time, whild the remem-* 
brance of them was yet drong on the mind. 
The thermometers ufed on this occafion were thofe marked 
A and F* 
/ 
Experiment 
