. Vol. XIX AUOUSX 16, 1920 No. lO 



JOURNAL OP 



AGRICULTURAlv 

 RESEARCH 



CONXE^NTS 



Investigations in the Ripening and Storage of Bartlett 



Pears -------.»_ 473 



J. R. MAGNESS 

 ( Contribution from Bureau of Plant Industry ) 



Further Data on the Orange-Rusts of Rubus - - - 501 ' 



L. O. KUNKEL 



( Contribution from Bureau of Plant Industry ) 



Germ-Free Filtrates as Antigens in the Complement- 

 Fixation Test ------»_ 513 



WILLIAM S. GOCHENOUR 



( Contribution from Bureau of Animal Industry) 



Mosaic Disease of Corn -----». 517 



E. W. BRANDES 

 (C«ntTibutIon from Bureau of Plant Industry) 



PUBUSHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 



WITH THE COOPERATION OF THE ASSOCIATION OF 



LAND-GRANT COLLEGES 



WASHINOTON, r>. C. 



WAaHINOTON ; OOVERNUENTPBINTINaOPriOe : UM 



