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

 of instruments above ground, 51 feet. Above sea level, 200 

 feet. 



Pressure. — In inches. Actual Maximum Reading, 

 30.100; Mean, Reduced to 32° F., 29.709; Monthly 

 Range, 0.980. 



Air Temperature. — In Degrees, F. Mean, 61.9°; High- 

 est, 79° ; Lowest, 40° ; Monthly Range, 39° ; Highest Mean 

 Daily, 72.2° ; Lowest Mean Daily, 50.7° ; Mean Maximum, 

 68.9°; Mean Minimum, 55.4°; Mean Daily Range, 13.4°; 

 Greatest Daily Range, 28°. 



Humidity. — Mean Dew Point, 5G.9° ; Mean Relative 

 Humidity, 83.3 ; Mean Force Vapor, .5824. 



Wind. — Prevailing Direction, South-west; Total Move- 

 ment, 4,310 miles; Greatest Daily Movement, 328 miles — 

 11th; Least Daily Movement, 34 miles — 2d; Mean Daily 

 Movement, 143.6 miles; Mean Hourly Velocity, 6.0 miles; 

 Maximum Pressure per Square Foot, 9| pounds = 44 miles 

 per hour, on the 10th, at 9 a.m. 



Precipitation. — In inches. Total, 2.36 inches; at Base 

 of Tower, 3.17 inches. 



Bright Sunshine. — Number of Hours recorded, 120. 



Weather. — Mean Cloudiness on a Scale of 10, 6.5; 

 Number of Clear Days, 8 ; Number of Cloudy Days, 19 ; 

 Number of Fair Days, 3 ; Total Cloudiness Recorded by 

 Sun Thermometer, 239 hours, or 66.6 per cent. 



Thunder and Lightning, 17th. 



Frosts, 21st and 23d. 



Winds followed by Pain, 11th, Nth, 20th and 30th. 



Number of Days on which .01 inch or more rain fell, 11. 



