METEOROLOGICAL OBSERVATORY 



Hatch Expcriiiiciit 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 73. 



JANUARY, 1895. 



inONTHLY SUMiVIARY. 



Freasitre. In Inches. I Mean daily movement 93.4 m. 



Aotiial niaxinuim reading, . . 30.31, 10th, 9 a- Mean h(>urly velocity 3 9 m. 



Actual minimum reading, . 28.87, iGth, 1 P- Maximum pressure per squai-c foot, 13 lbs.= 

 Mean reduce<l to sea level 30.047 51 m. per hour, 27th, at 3 P. 



Monthly range 1.44 



*Air Tetnperatitre, In Degrees Falir. 



Highest 46; 455, 7th 



Lowest 4,-4.5, 3rd 



aiean, 24.9; 23.2 



Monthly Range 42.; .50^ 



Highest mean daily, 38.4,37. Number of fair days 7 



Lowest mean daily 9.9, 9.7 ^"'"'^^r of cloudy days, 13 



Mean maximum 3,^. 3.,,, Total cloudiness recorded by the Sun Ther- 



* Precipitation . In inches. 



Total precipitation 3.87 



Wenther. 



Mean cloudiness observed, ... 51 per cent. 

 jNumber of clear days 11 



Mean minimum 17.5; 10.9 



Mean daily range 



Greatest daily ra'nge, 2G. ; 3 



Least daily range 4. ; 6.5 



Humidity. 



Mean dew point, 19.2 



Mean force of vapor, 1440 



Mean relative humidity 82.5 



Wind. 

 Prevailing Directions. 



North, . 13 per cent. 



North West, 18 " " 



South 18 " " 



West, 19 " " 



Other directions 32 " " 



Total movement 2896 m. 



Greatest daily movement, . . . 376 m., 27th 

 Least daily movement 9 m.; 6th 



mometer 141 hours or 48 per cent. 



H 2- '>! '^ dumber of days on which .01 inch or more 



rain or melted snow fell, 13 



Number of inches of snow on the ground at 



the close of the month, 6 



Sright Sttnshine. 



Number of Hours recorded, 153 



Rain, 6th, 8th, 10th, 11th, 13th, 21st, 22d,26th 

 Snou',4th,6th, >-th, 10th, 16th, 18th, 19th,26th, 



29th, 30th. 



Total fall in inches 21 3 



Hail 26th 



Meati Ozone, ;?0 per cent. 



Hnlos, 



Solar 5th, 12th, 19th, 24th, 2Sth 



Lunar 9th 



Gales, of 35 or more miles per hour, 37, 4th, 



N.W.; 45, 13th, S.W.; 35, 14th, S W.; 35, 



19th, N . ;37,24th, W. ; 47 ,26th, W. ;51 ,27th, W. 



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



