Earthquakes occurred: 1870, October 20; 1871, October 19; 

 1872, January 9; 1881, June 21. 



Precipitation. During the period in question the total annual 

 rainfall averaged 36.00 inches and the snowfall 94.43 inches, 

 making the average annual precipitation 45.44 inches, or 3.79 

 inches per month. 



Cloudiness and yvind. The mean percentage of cloudiness 

 for the twenty-four, years was 52. The direction and force of 

 :the wind, recorded in accordance with the instructions of the 

 United States Weather Bureau, resulted as follows: Northwest 

 and west, 40 per cent ; southwest and south, 28 per cent ; north- 

 east and north, 20 per cent ; southeast and south, 12 per cent. 



Barometric pressure. The maximum barometric-' pressure 

 reduced to 32 F. was 30.833 inches; the minimum, 28.423 

 inches ; and the mean, 29.842 inches. The correction for gravity 

 is inappreciable, 



Humidity. The mean pressure of vapor for fifteen years 

 (1869-1884) was 0.257 i ncn f mercury. 



The relative humidity ranged from a maximum of 100 per 

 cent to a minimum of 10 per cent, with a mean for the 24-year 

 period of 77 per cent. 



Thunderstorms. The number of thunderstorms observed 

 during the period was as follows : 



Year. No. Year. No. 



1870.. 7 1882 12 



1871 5 1883 12 



1872 10 1884 10 



1873 4 1885 13 



1874 4 1886 13 



1875 6 1887 ii 



1876 4 1888 12 



1877 7 1889 ii 



1878 9 1890 10 



1879 12 1891 13 



1880 9 1892 8 



1881 13 



When these numbers are plotted there seem to exist periods 

 of maxima and minima of thunderstorms. 



