Vol.. XXII NOVEMBER 19, 1921 No. « 



JOUKNAI> OF 



AGRICULTURAL 



RESEARCH 



CONTENTS 



Pago 



Hemotoxins from Parasitic Worms - - - - - -379 



BENJAMIN SCHWARTZ 



( Contribution from Bureau of Animal Industry ) 



Ash Content of t^ie Awn, Rachis, Palea, and Kernel of Barley 

 during Growth and Maturation - - - - - - 433 



HARRY V. HARLAN and MERRITT N. POPE 



<Contilbution rom Bureau of Plant Industry) 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 



WITH THE COOPERATION OF THE ASSOCIATION OF 



LAND-GRANT COLLEGES 



WASHINGTON, D. C. 

 GOVERNMENT PRINTING OFFICE 



1921 



