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ABSTRACT OF A METEOROLOGICAL JOURNAL

Kept at BELOIT COLLEGE, BELOIT, WISCONSIN, for the Year 1851. Latitude
42o 30' 23" N. Longitude 12o 03' 20" W. from Washington. Elevation
above Lake Michigan, 172 feet; above the Ocean, 750 feet. By S. PEARL
LATHROP, M. D. Professor of Chemistry and Natural History.

[Meteorological Data]

The mean temperature of the past year is 47o.895, being a little above that
of the year 1850, which was 47o.200.

The mean temperature of the winter months of 1850-51, is 27o.43; of the
spring months of this year, 46o.70-being 3o.62 higher than the temperature
of the same months in the year 1850. The temperature of the summer months
is 67o.64-being 3o.86 lower than the temperature of the same months in
the year 1850. The temperature of the autumnal months is 50o.45-being
.88 of a degree above the temperature of the same months of the previous year.

The average density of the atmosphere, as indicated by the barometer, 29.339
inches-is a trifle greater than in the year 1850, it being for that year 29.27
inches, when corrected, by adding the decimal .64; which by comparison with
one of Green's barometers-the kind now used, and recommended by the Smith-
sonian Institute-is found to be the true amount of correction necessary for the
barometer then in use.