Vol. XV DECEMBER 30, 1918 No, X3 



JOURNAL OP 



AGRICULTURAL 



RESEARCH 



CONTENTS AND INDEX 

 OF VOLUME XV 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 



WITH THE COOPERATION OF THE ASSOCIATION OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



avashinoxon:. d. c. 



W*«MIH0T9N t OOVmRNMCNT PttlNTIMa OVTMB I l«M 



