Vol. VI AUGUST 21, 1916 No. 21 



JOURNAL OP 



AGRICULTURAL 

 RESEARCH 



CONTENTS 



Pace 



Life-History Studies of Cirphis unipuncta, the True Army 

 Worm - - - - - - - -. - - 799 



JOHN J. DAVIS and A. F. SATTERTHWAIT 



Infection of Timothy by Puccinia graminis - - 813 



E. C. STAKMAN and F. J. PffiMEISEL 



Control of the Powdery Dryrot of Potatoes Caused by 

 Fusarium trichothecioides ------ 817 



O. A. PRATT ' 



DEPARTMENT OF AGRICULTURE 



WASHINGTON.D.C 



WASHINGTON : GOVERNMENT PRINTING OFFICE : 1M*' 



