Vol. XXIX 
NOVEMBER 15, 1924 
No* 10 
J OURNAL OF 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Page 
Observations on the Mechanism of the Reaction between Formaldehyde and Serum 
Proteins - 472 
R. R. HENLEY 
A Bacterial Leafspot of Martynia 433 
CHARLOTTE ELLIOTT 
Relation of Sheep to Climate.492 
EVERETT L. JOHNSON 
Tolerance and Resistance to the Sugar Cane Mosaic. 501 
C. W. EDGERTON and W. G. TAGGART 
Further Studies on the Relation of Onion Scale Pigmentation to Disease Resistance - 507 
J. C. WALKER and CARL C. LINDEGREN 
Asexual Propagation as an Aid to the Breeding of Rootstocks - - - - 515 
WALTER SCOTT MALLOCH 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
1925 
