/ol. XXXI JULY 1,1925 
JOURNAL 
No* 1 
CONTENTS 
Further Studies on the Overwintering and Dissemination of Cucurbit Mosaic - 
S. P. DOOLITTLE and M. N* WALKER 
Preliminary Report on Colloidal Clays as Emulsifiers for Mineral Oils Used in 
Spraying Citrus Groves - - - - - - - - - - - 
W. W. YOTHERS and JOHN R, WINSTON 
Relation between Certain Heritable Properties of Wheat and Their Capacity to 
Increase Protein Content of Grain - - - - - - - » 
W. F. GERICKE 
Spreaders for Spray Materials, and the Relation of Surface Tension of Solutions to 
Their Spreading Qualities - - - •» - 
■ R. H. ROBINSON 
Paso 
1 
59 
07 
71 
Associations between Number of Kernel Rows, Productiveness, and Deleterious 
Characters in Corn - - - - - * - - - - - - ; - 
CURTIS H. KYLE and HUGO F. STONEBERG 
S3 
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 
