Vol. XXVII 
MARCH 8, 1924 
No. 10 
JOURNAL OP 
CONTENTS 
* ' ^ ' - *■ ‘ '. Pago- 
Effect of .Nitrate Applications upon the Hydrocyanic-Acid Content 
of Sorghum - - -- - - - - 717 
R. M. PINCKNEY 
(Contribution from Minnesota Agricultural Experiment Station) 
The Course of Aridity Changes during the Growth Period of 
Wheat with Special Reference to Stem-Rust Resistance - 725 
ANNIE M AY HURD ' 
(Contribution from Bureau of Plant Industry) 
Cjrtological Studies of Diploid and Polyploid Forms in Raspberries - 737 
, ALBERT E. LONGLEY and GEORGE M. DARROW 
(Contribution from Bureau of Plant Industry) 
Aecidiospore Discharge as Related to the Character of the Spore 
W all - - - - - - - - 749 
B. O. DODGE 
(Contribution from Bureau of Plant Industry) 
Hastening the Coloration of Lemons - - - - - 757 
F. E. DENNY 
(Contribution from Bureau of Chemistry) 
Nocturnal Production of Conidia by Sclerospora graminicola - 771 
WILLIAM H. WESTON, Jr. 
- (Contribution from Bureau of Plant Industry) 
Daily Variation of tbe Carbohydrates in the Leayes of Corn and 
the Sorghums - - — - - 785 
EDWIN C. MILLER 
(Contribution from Kansas Agricultural Experiment Station) 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
