50 Gen. A. W. Grcely — B.ainfall Types of the United States. 



place, and 4.00 inches in Februaiy, 1870, at the latter, throw the 

 February daily pre^cipitation slightly al)Ove that of December. 

 Of the following examples of the Pacific type, five are drawn 

 from the interior, viz, Spokane, Washington; records of 12 years ; 

 Delano, California, 15 years ; Boise City, Idaho, 22 years ; Prom- 

 ontory, Utah, 21 years ; Halleck, Nevada, 21 years ; and three 

 from coast stations, viz, Astoria, Oregon, 29 years ; San Diego 

 and San Francisco, California,, each 41 years. 



Normal dcdbj Rainfall and monthly Departures therefrom-. 



( Values are infractions of an inch.) 



STATIONS. 





O.S; 





O g q 

 c >>!« 





^'S^ 





0-3 CO 

 O 0) 



as >> 



DEPAETURES. 



January .... 

 February ., 



March 



April 



May 



June 



July 



August 



September 



October 



November. 

 December. 



.015 

 .008 

 .004 

 .005 

 .000 



— .008 



— .014 



— .009 



— .002 



— .002 



— .003 

 .009 



Another simple type of rainfall is that which in a previous 

 paper I designated as the " Trans-Pecos," from the fact that it 

 dominates extreme western Texas beyond the Pecos river. On 

 further investigation it proved to prevail in the province of 



