Vol. XIX QE:]PXENIBKR 15, 1921 No. 12 



JOURNAL OP 



AGRICULTURAL 



RESEARCH 



CONTENTS AND INDEX 

 OF VOLUME XIX 



PUBUSHED BY ADTHOWTT OF THE SECRETARY OF AGRICUITDRB 



WITH THE COOPERATION OF THE ASSOQATION OF 



LAND-GRANT COLLEGES 



\SrASHINGXON, D. C. 



WAtHIMTON 1 OOVMNIHHT rniNTINQ Off Nl I mi 



