METEOROLOGICAL OBSERVATORY 



OF THE 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



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



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



BULLETIN No. 7 1. 



NOVEMBER, 1894. 



MONTHLY SUMMARY. 



Pressure. In inches. 

 Actual maximum reading, . . 30.73,29th, 9 P. 

 Actual minimum reading, . . -29.51, 3rd, 11 ,\. 



Mean reduced to sea level, 30.081 



Monthly range 1.22 



*Air Tetnperature. In Degrees Fahr. 



Highest 62 . ; 65. ; 3rd 



Lowest 11; 10., 2uth 



Mean, 36.5; 34.8 



Monthly Range 61.; .55 



Highest mean daily, .56.1, 65.5 



Lowest mean daily, 21.4,25.5 



Mean maximum 4i 6; 42.5 



Mean minimum, 28.1; 27.1 



Mean ilaily range 13. .i; 15.4 



Greatest daily range, 24. ; 25. 



Least lUiily range 4. ; 6. 



Uumiditi/. 



Mean dew point, 27.3 



Mean force of vapor, 229i 



Mean relative humidity, 70. s 



Wind. 



Prevailing Directions. 



North 20 per cent. 



North West, 27 " " 



South West 23 " " 



Other directions 30 " " 



Total movement 4179 m. 



Greatest daily movement, . . . 306 m., 28th 



fieast daily movement, 19 m.; 13th 



Mean daily movement 139 m. 



Mean hourly velocity, 5 8 m. 



Maximum pressure per square foot, 181bs.= 

 6U m. per hour, 3rd, at 9-30 a. 

 * Precipitation. In inches. 



Total precipitation 1.57; 3.14 



Weather. 

 Mean cloudiness observed, ... 50 per cent. 



Number of clear days, 9 



Number of fair days 6 



Number of cloudy days, 15 



Total cloudiness recorded by the Sun Ther- 

 mometer, . . . 165 hours or 56.3 per cent. 

 Number of days on which .01 inch or more 



rain or melted snow fell, 11 



Jiright Sunshine. 



Number of Hours recorded 128 



Kain, . . . 3d, 5th, 9th, 14th, 17th, 19th, 23rd 

 Snow, . . . >th, 10th, 24lh,2.Mh,2:th, 30th 



Total fall in inches 4J 



Mean Ozone, 28 per cent. 



Gtih's, of ;^5 or more miles per hour, 60, 3rd, 



W.; 53, 6ih, N.; 38, 7th, VV.S. W.; 51, 19th 



W. 



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



