Issued Juno 14, 1918. 



U. S. DEPARTMENT OF AGRICULTURE 

 STATES RELATIONS SERVICE 



A. C. TRUE, DIRECTOR 



Vol. 38 



ABSTRACT NUMBER 



No. 6 



EXPERIMENT 



STATION 



RECORD 



WASHINOTOir 



OOVEi^MENT PRINTINO omCB 



1918 



