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AIX. 
METEOROLOGICAL OBSERVATIONS, MADE AT BOWDOIN 
COLLEGE 35 
In a letter to Mr. Levi Hedge, ¥. a. a. Tutor in Harvard College. 
By PARKER CLEAVELAND, a. m. 
Professor of Mathematics and Natural Philosophy. 
ote 6 
“er ec 
Bowdoin College, 29th Sept. 1808, 
DEAR SIR, 
_ I SEND you a short extract from my meteorological journal ; 
by which you will be enabled to form some opinion of the extremes of 
temperature in this section of the District. 1 well know that a series 
of observations for several years is necessary to the forming of a cor- 
rect estimate ; but sucha series is not yet attainable in this part of the 
country. The mean temperature of our climate, deduced from the 
greatest heat and the greatest cold, is a little lower, perhaps from ,f, to 
3s of a degree, than that reduced from three observations a day. 
This extract consists of observations of the greatest heat and 
the greatest cold during the months of January, February, and 
March in the years 1807 and 1808. Iam informed by those, who 
have for a long time resided in this place, that the cold of the afore- 
mentioned months in the year 1807 was unusually severe; and, on 
the other hand, that the same months in 1808 were milder, than in 
common years. The thermometer, which I use, was made by Mr. 
Six ; and is sensible andaccurate. It is constantly exposed tothe air, 
suspended at the northern side of a building, about seven feet above the 
