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STATE BOARD OF AGRICULTURE. 



Meteorological observations for the month of December, 1911, at Agricultural Collecje, East 



Lansing, Michigan. 



Atmospheric Pressure. — (Reduced to sea level; inches and hundredths). — Mean, 30.11; highest, 30.63; date, 19; lowest, 

 29.39; date, 26. 



Temperature. — Highest, 57; date, 10; lowest, 6; date, 4; greatest daily range, 26; date, 27; least daily range. 2; date, 30. 



Precipitation.— Total this month, 1.58; snowfall, 10.1; greatest precipitation in 24 hours, 0.55; date, 3(j and 31; snow on the 

 ground at end of month, 1.0. 



Wind. — Prevailing direction, southwest; total movement, 5,077 miles; average hourly velocity, 5.3; maximum velocity (for 

 five minutes), 30 miles per hour, from southwest, on 27. 



Weather. — Number of days, clear, 7; partly cloudy, 2; cloudy, 22; on which .01 inch, or more, of precipitation occurred, 14. 



Miscellaneous Phenomena (dates of).— Auroras, 0; halos: solar, 20; lunar, 12, 28; hail, 0; sleet, 0; fog, 19; thunderstorms, 0. 



DEWEY A. SEELEY, 

 Local Forecaster, Weather Bureau. 



