METEOROLOGICAL TABLES. 



115 



Meteorological observations for the month of July, 1912^ at Agricultural College, East 



Lansing, Michigan. 



Atmospheric Pressure. — (Reduced to sea level; inches and hundredths.) — Mean, 30.01; highest, 30.35; date, 19; lowest, 

 29.69; date, 24. 



Tempera TUiiE.— Highest, 90; date, 9; lowest, 43, date, 19; greatest daily range, Sf); date, 16; Least daily range, 9; date, 21. 



Wind. — Prevailing direction, southwest; total movement, 3,475 miles; average hourly velocity, 4.7: maximum velocity (for 

 five minutes) 20 miles per hour; from south on 13. 



Weather.— Number of days, clear, 4; partly cloudy, 13; cloudy, 14; on which .01 inch, or more, of precipitation occurred, 14. 



Miscellaneous PHENOiraNA (dates of). — Auroras, 0; halos: solar, 12-19; lunar, 0; hail, 0; sleet, 0; fog, 14-22; thunderstorms, 

 3-6-7-8-12-13-23-24-28-29-30. 



♦Frost.— light, 0; heavy, 0; killing, 0. 



Note. — "T" indicates trace of precipitation. 



•Frosts are not recorded after the occurrence of "killing." except in Florida and along the immediate coast of the Gulf of Mexico. 



DEWKY A. SEELEY, 

 Local Forecaster, Weather Bureau. 



