JUNE 1, 1925 
No. 11 
SO, no- \ * 
JOURNAL OF 
AGRICULTURAL 
RESEARCH 
- 3 ., 
contentsI 
Factors Affe cling Reprcduction cf Engelmann Spruce I 
w W. C. LOWDERMILK 
Fusaria 
CHRISTOS P. SIDERIS 
Effect of Seed s upon Hydrogen-Ion Concentration Equilibrium in Solution 
WILLEM RUDOLFS 
Fusarium Resistant Cabbage: Progress with Second Early Varieties - 
L. R. JONES, J. C. WALKER, and JOHN MONTEITH, Jr. 
The Cottony Leak of Cucumbers Caused by Pythium aphanidermatum 
CHARLES DRECHSLER 
Page 
. 995 
The Role of the Hydrogen-Ion Concentration on the Development of Pigment in 
•>‘-y g*:- ■; 
- 1011 
- 1021 
- 1027 
- 1035 
Comparative Studies of Pythium debaryanum and Two Related Species from 
Geranium 
1043 
HARRY BRAUN 
Variation in the Kherscn Cat at Akron, Colo. - - - - - - - 1063 
F. A. COFFMAN and T. R. STANTON 
Relation Between Weather Conditions and Yield of Cotton in Louisiana - 1083 
BRADFORD B. SMITH 
Relative Susceptibility cf Seme Rutaceous Plants to Attack by the Citrus-Scab Fungus 1087 
JOHN R. WINSTON, JOHN J. BOWMAN, and WALTER J. EACH 
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 
