Vol. X JULY 2, 1917 No. 1 



JOURNAL OF 



AGRICULTURAIv 



RESEARCH 



CONXKNXS 



Page 



Life History of Plutella maculipennis, the Diamond-Back 

 Moth - - - - - - - - - - 1 



H. O. MARSH 



Daily Variation of Water and Dry Matter in the Leaves of 

 Com and the Sorghums - - - - - - 11 



EDWIN C. MILLER 



A Neglected Factor in the Use of Nicotine Sulphate as a 

 Spray -- --- - - -_ - 47 



WILLIAM MOORE and SAMUEL A. GRAHAM 



A New Disease of Wheat - - - - - - 51 



ERWIN F. SMITH 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICUITURE, 



WITH THE COOPERATION OF THE ASSOCIATION OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



^W:ASHINOTO]Sr, D. c. 



WA8WNQT0H ! COVERKMEWT PRlNTiKQ CFFIOS I l»h 



