Vol. XIX IvIAY 1, 1920 No. 3 



JOURNAL OF 



AGRICULTURAL 



RESEARCH 



CONXKNTS 



Pag* 



Philippine Downy Mildew of Maize - - - - 97 



WILLIAM H. WESTON, Jr. 



(Contnibotlon from Bureau of Plant Industry) 



Effect of Drugs on Milk and Fat Production - - - 123 

 FRANK A. HAYS and MERTON G. THOMAS 



(Contribution from Delaware Agricultural Experiment Station) 



Artificial and Insect Transmission of Sugar-Cane Mosaic - 131 



E. W. ERANDES 

 (Contribution from Bureau of Plant Industry) 



PUBUSHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURBt 



WITH THE COOPERATION OF THE ASSOCUTION OF 



LAND-GRANT COLLEGES 



WASHINGTON, D. C. 



WASHINaTOH I OOVCRNMeMT rMINTINa OmOl I Itl* 



