Vol. XXVIII 
JUNE 7, 1924 
No. 10 
JOURNAL OP 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Individual and Age Variation in Microtus montanus yosemite - ... 
A. BRAZIER HOWELL 
A Genetic and Cytological Study of Certain Hybrids of Wheat Species - 
KARL SAX and E. F. GAINES 
Determination of Temperatures Fatal to the Powder-Post Beetle, Lyctus planicoUis 
Leconte, by Steaming Infested Ash and Oak Lumber in a Kiln 
T E. SNYDER and R. A. ST. GEORGE 
Bacterial Blight of Rye 
C. S. REDDY, JAMES GODKIN, and A. G. JOHNSON 
Non-Inheritance of Terminal Bud Abortion in Pima Cotton 
THOMAS H. KEARNEY 
Page 
977 
1017 
1033 
1039 
1041 
Relative Resistance of the Rice Weevil, Sitophilus oryza L., and the Granary Weevil, 
S. eranarius L., to High and Low Temperatures. 
E. A BACK and R. T. COTTON 
1043 
Uninucleated Aecidiospores in Caeoma Nitens, and Associated Phenomena 
B. O. DODGE 
1045 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
1924 
