E. J. Russell and E. H. Richards 



327 



Kainfall in Lnclies • 



Nitrogen in lbs. per acre 



45 



-0 350 



300 



550 



200 



150 



--0 100 



SEPT OCT NOV DEC J*N FEB MAR APRIL MAT JUNE JUIT AUG 



Sept. 1, 1904-Aug. 31, 1908. 



050 



T 1 i r 



T 1 1 r 



350 



300 



250 



EPT OCT NOV. DEC. JAN. FE6. WAR APP.tL MAY JUNE JOLY AUg! 



Sept. 1, 1908-Aug. 31, 1912. 



40- 



35 



3 0'- 



25 



20 



1 5 



-0 350 



0300 



-0250 



-0 200 



■0 150 



-0 100 



SEPT OCT. NOV. DEC JAN FEB MAR APRIL MAY JUNE JULY AilR 



Sept. 1, 1912-Aug. 31, 1916. 

 Fig. 4 {cont.). 



22—2 



