No 
fol. XXIII 
FEBRUARY 10, 1923 
JOURNAL OF 
CONTENTS 
Pag* 
Iron and Manganese Content of Certain Species of Seeds - 395 
J. S. McHARGUE 
(Contribution bom Kentucky Agricultural Experiment Station) 
Studies upon the Life Cycles of the Bacteria—Part H: 
Life History of Azotobacter - - - - - - 40I 
F. L&HNISapd N. R. SMITH 
< Contribution bom Bureau ol Plant Industry) 
Infl uence of Fertilizers Containing Borax on the Growth 
and Fruiting of Cotton - - - - - - - 433 
J. J. SKINNER and F. E. ALLISON 
< Contribution Irom Bureau oi Plant. Industry and Flred-Nltrogen Laboratory ) 
Genetics of Bunt Resistance in Wheat - - - - 445 
E. F. GAINES 
(Contribution lrom Washington Agricultural Experiment Station ) 
A Bacterial Leaf spot of Tobacco - - - - - 481 
JAMES JOHNSON 
(Contribution from Bureau oi Plant Industry and Wisconsin Agricultural Experiment Station) 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 
WITH THE COOPERATION OF THE ASSOCIATION OF 
LAND<ORANT COLLEGES 
WASHINGTON, D. C, 
GOVERNMENT PRINTING OFFICE 
v ' • ' - 1923 ■_ 
