METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



.A.]Sd::E3:EPtST. 



Latitude, 42° 23' 48.5" N. Longitiule, 72° 31' 10" W. 



Height of instruments above ground^ 51 ft. Above sea level, 260 ft. 



BULLETIN No. 70. OCTOBER, 1894. 



MONTHLY SUMMARY- 



I'ressure. In inches. 

 Actual maximum reading, 30.13, 23r(l, 9 P. 

 Actual minimum reading, 28.94, lOtii, 12-30 p. 



Mean reduced to sea level, 30.016 



Monthly range, 1.19 



*Air Temperature. In Degrees Fahr. 



Highest 71.; 75.; 20th 



Lowest, 39; 32., 27th 



Mean 52.) ; 51.5 



Monthly Range 32.; 43. 



Highest mean daily, (52.5,63.5; 4th 



Lowest mean daily 41.4,44. ; 1.5th 



Mean maximum 58.5; 62.6 



Mean minimum 4.').2; 40.6 



Mean daily range 13.6; 22.1 



Greatest daily range, 26. ; 37. 



Least daily range, 2. ; 5. 



Humidity. 



Mean dew point, 44.6 



Mean force of rapor, 4075 



Mean relative humidity 82.7 



Wind. 



Prevailing Directions. 



South 20 per cent. 



South West, 12 " " 



North West, 25 " " 



Other directions 43 " " 



Total movement 2540 m. 



Greatest daily movement, .... 219 m., 7th 



Least daily movement Im.; 28th 



Mean daily movement 82 m. 



Mean hourly velocity 3 4 m. 



Maximum pressure per square foot, 101b8.= 

 45 m. per hour, 31st, at 3 p. m. 

 * Precipitation. In inches. 



Total precipitation 2.96; 4.85 



WeatJier. 

 Mean cloudiness observed, ... 44 per cent. 



Number of clear days 11 



Numberof fair days 5 



Number of cloudy days 15 



Total cloudiness recorded by the Sun Ther- 

 mometer 182 hours or 56 percent. 



Number of days on which .01 inch or more 



rain fell, 10 



Frost, Sth, 16th, 18th, 19th 



Bright Sunshine. 



Number of Hours recorded, 160 



Rain. . 3d, 4th, 5th, 9th, 10th, 13th, 17th, 24th, 

 3l8t. 



Rainbow, 17th 



Mean Ozone, 22.3 per cent. 



Oales, of 35 or more miles per hour, 35, 6th, 

 W. ; 38, 11th, S. ; 45, 31st, S. W. 



•The first figures denote readings at top of tower, the second at base. 



