SES CLEES 
XV. Meteorological Obfere cations at act wm 1781, 1782 
and 1783. Lat. 42°38'30"N. Long. 70°45’ W. By the 
Reverend Manasses CUTLER, F. A. A. and M. S. and 
Member of the Phil ofophical Society . at Philadelphias 
HE thermometer ufed in the following Ebicrvatione d Was 
made by Gibert,- on Farenheit’s feale, with a tube four- 
teen inches in length. It is placed in an entry-way, remote 
from fire or the rays of the fun. The barometer is of the 
portable kind, made by Hair. The quantity of rain is mea- 
fured by an ombrometer, ‘made of tin, twelve inches fquare at 
the mouth, the fides. of which are perpendicular. The rain 
falls through the mouth into a funnel, which conducts it into 
a refervoir, "where it is fecured from evaporation ; and is, after- 
wards, decanted off and meafured ina three-inch cubic meafure. 
It ftands firmly fecured, in an open fituation, with the mouth 
about two feet from the ground. ‘The quantity of water con- 
tained in fhows, is generally afcertained by taking the cubic 
meafure of a column of fhow, at its mean depth, from the 
furface to the bottom, ‘and diffolving it in the ombrometer. 
But as fnows frequently fall one upon another, or are accompa- 
nied with rain, there is great difficulty in afcertaining, with ex- 
actnefs, the quantity of water that falls during the winter. 
In the account of difeafes, not every diforder that occured, 
but only fuch as were moft prevalent, are inferted. Edward 
A. Holyoke, M. D. favoured me with the account of difeafes 
in Salem ; Dr. lfaac Spafford with thofe in we and Dr. 
Elia Whitney with thofe i in We 
Days. 
s-da Se 
