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ABSTRACT OF A METEOROLOGICAL JOURNAL 



Kept at Beloit College, Beloit, Wisconsin, for the Year 1851. Latitude 

 42° 30' 23" N. Longitude 12° 03' 20 " W. from Washington. Elevation 

 above Lake Michigan, 172 feet; above the Ocean, 750 feet. By S. Pe.a.rl 

 Lathrop, M. D. Professor of Chemistry and Natural History, 



The mean temperature of the past year is 47°. 895, being a little above that 

 of the year 1850, which was 47°.200. 



The mean temperature of the winter months of 1850-51, is 27*^.43; of the 

 spring months of this year, 40". 70 — being 3^.62 higher than the temperature 

 of the same months in the year 1850. The temperature of the summer months 

 is 67''. 64 — being 3°. 86 lower than the temperature of the same months in 

 the year 1850. The temperature of the autumnal months is 50''. 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 Listitute — is found to be the true amount of correction necessary for the 

 barometer then in use. 



