260 



Fall of Rain and Snow at Wallingford, Conn. 



ployed is a cylindrical metallic vessel 11^ inches iu diameter, and 8 

 inches deep. Near the middle of its height is a metallic diaphragm, 

 designed to preserve the interior from objects falling upon the upper 

 surface, while allowing the water to pass freely. It also prevents 

 animals from drinking the fallen water. The gauge was placed on 

 the sui-face of the ground, in the yard of Dr. Harrison's house, where 

 there is a tolerably free exposure. To measure the amount of rain or 

 melted snow there is a glass jar properly graduated to shoAV inches, 

 tenths and hundredths. The snow gauge is also 11^ inches in diam- 

 eter, and is two feet deep. It is placed on the top of a fence, at an 

 elevation of about three feet from the surface of the ground, in a 

 tolerably free exposure. 



Table XI shows the total fall of rain and melted snow in inches for 

 each month of the years observed ; also the monthly means derived 

 from twelve or fourteen years of observation, and the total annual 

 fall of rain and snow. The average annual fall of rain and melted 

 snow, derived from twelve and a half years of observations, is 51-26 

 inches ; and this amount is distributed not very unequally through 

 the different seasons, being in spring l.S'78; summer 13-54; autumn 

 12-07 ; and winter 11-87 inches. 



Table XL — Fall of rain and melted snow ^ in inches ^Wallingford., Ct. 



Table XII shows the total fall of snow for each month in inches, 

 also the monthly means and the total annual fall. The mean annual 

 fall is 51-17 inches, and all this fell from November to April inclusive. 

 Snow occasionally falls in October and May, but no such case oc- 

 curred during the twelve and a half years embraced by these obser- 

 vations. 



