Vol. XXVIII MAY 24, 1924 No. 8 
JOURNAL OP 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Indicator Significance of the Natural Vegetation of the Southwestern Desert ** 
Region - -.-.- ----....721 
H. L. SHANTZ and R. L. PIEMEISEL 
Acromania, or “ Crazy-Top,” a Growth Disorder of Cotton ..... £03 
o. P. COOK 
The Polyembryonic Development of Platygaster vernalis ..... 829 
R. W. LEIBY and C. C. HILL 
The Inheritance of Pubescent Nodes in a Cross between Two Varieties of Wheat > 841 
H. H. LOVE and W. T. CRAIG 
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 
