Vol. XIII AF»RIL 29, 1918 No. 5 



JOURNAL OF 



AGRICULTURAL 

 RESEARCH 



CONTENTS 



Anthracnose of Lettuce Caused by Marssonina panatton- 



iana ---------- 261 



£. W. BRANDES 

 ( Contribution Irom States Relations Service ) 



Tibe Calcium Arsenates - - - - - - - 281 



R. H. ROBINSON 



( Conlrlbotion from Oregon AKricuItanJ Eiperlment Ststloa ) 



Stemphylium Leafspot of Cucumbers - - - - 295 



GEORGE A. OSNER 



( Cflotrittution from Indiana Asricultuni Esperimeat Station ) 



PUBUSHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. 



WITH THE COOPERATION OF THE ASSOCIATION OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



WASHINOTON, D. C. 



WASHINOTON : 007E«MMe»T PRIHTIMQ OFFICE : 1«1« 



