Vol. XXXI 
JULY 15, 1925 
No. 2 
w 
JOURNAL OF 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Pegc 
Bean Varietal Tests for Disease Resistance - -- -- -- - 101 
R. D. RANDS and WILBUR BROTHERTON, Jr. 
Effect of Dehydration upon the Bacterial Flora of Eggs - --- - -155 
GEORGE G. DE BORD 
The Effect of Low Temperatures on Bruchus obtectus Say, an Insect Affecting Seed 165 
WALTER CARTER 
The Influence of Irrigation Water and Manure on the Composition of the Corn 
Kernel- - -- -- -- -- -- -- -- 183 
J. E. GREAVES and D. H. NELSON 
Cleaning Milking Machines - - - - - - - - - - -191 
L. H. BURGWALD 
Laboratory Tests on Effect of Heat on Seeds of Noble and Silver Fir, Western 
White Pine, and Douglas Fir - - - - - - - - - 197 
J. V. HOFMANN 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
