66 



OREGON FARMER 



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T 

 mov 

 d 

 nl 



Valley. 

 wind 



o 

 avo 

 den 



n 

 a 



sources. Fro 

 eported whe 

 ts without ta 

 ree from sud 



osh Island, to 100 inches in the I 

 fair average humidity, and mo 

 onservation of our great water r 

 mplete. Killing frosts are often 

 ithout injury except in a few sp 

 s of the State are relatively 



on Tat 

 erature, 

 to the co 

 rather inco 

 occurred wi 

 he temperat 



s for from 21 inches on 

 rred uniform temperat 

 sum- are favorable 

 at of the State is ra 

 vap- frosts have oc 

 cting drainage. Th 

 nges annual extre 



nditions f 

 and referr 

 ng and su 

 hile that 

 ason. Eva 

 ents effectin 

 he West 



article a 

 for spring 

 ason, wh 

 llowing s 

 her elem 

 in 



g 

 n f 



e chief cli 

 e accompa 

 of precipit 

 uring the 

 s grown t 

 ect of all 

 nual evap 



n e 

 An 



gives the summary of the 

 of Oregon described in the 

 disibution and amount of 

 use it effects crops dur 

 s the supply and 

 rface gives a me 

 or soil moisture. 



he s 



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= ttfc-S 



a?^0 



ons 

 an 

 ro 

 irri 



The above t 

 the different sect 

 to,on Page 55. 

 mer seasons i 

 autumn and 

 oration fr 

 of 



