The Tennessee Type. 



55 



Normal dally Ra'uifaJl and Departures therefrom. 



( Vcdaes are in fractions of an inch. ) 



STATIONS. 



S =5 s 



DEPARTURES. 



January . . 

 February . 



March 



April 



May 



June 



July 



August . . . 

 September 

 October. . . 

 November, 

 December . 



Except in New England the entire water-shed of the Atlantic 

 coast experiences a type of rainfall distribution which extends 

 to the drainage basin of the upper Ohio river. This type is called 

 the "Atlantic," and is one wherein the distribution through- 

 out the year is nearly uniform. The rainfall of Philadelphia, 

 record of 73 years, shows that the minimum daily rainfall of 

 October and January is 73 per cent of the maximum daily fall 

 in August. The most copious precipitation occurs after the 

 summer solstice, while the minimum rainfall is, as a rule, during 



