/ 
C I 5 I ] 
Received May 5, 1768. 
XXI. Part of a Letter from Dr . Wolfe, at 
War fa w, to Henry Baker, F. R . & Com- 
municated by Mr . Baker. 
Warfaw, April 15, 1768. 
Read May I2 >/^\UR winter has been very long and 
very fevere. The froft was at a me- 
dium, from the middle of December to the middle of 
March, at nine degrees of Reaumur’s thermometer 
below the freezing point. Three times it was from 
19 to 20 degrees, and very feldom afcended to the 
freezing point. Laft year the froft: was at 24 de- 
grees, but of no duration. In the year 1740 it was 
at 26 degrees, which, perhaps, is the lowed it has 
been remembered in this country. This year we 
have had little or no fnow, which made the froft ex- 
ceedingly more lenfible. The barometer is here, at 
a medium, at 28 4 inches Rhinland meafure : great 
ftorms fink it two inches lower ; and very dry wea- 
ther raifes it 1 4 inch higher. The declination of 
the needle at this place is eleven degrees and half 
to the weft. 
XXII. Extra# 
