Vol. XXI 
JULY 15, 1921 
No. 8 
'■ - . CONTENTS 
Relation of Hardness and Other Factors to Protein Con-; 
tent of Wheat - - - - ------- 
HERBERT F. ROBERTS, ■ 
/ ■ / • ] ' (Contribution If ®m Kansas Agricultural Experiment Station) : 
Effects of E Cucurbita Seeds on Animal. Metabolism 
BENJAMIN MASUROVSKY 
(Contribution from New Jersey Agricultural Experiment Station) 
A Constant-Temperature Bath, for Heating Blood Serum - 
R. R. HENLEY 
(Contribution fromBureau of Animal Industry) 
Assimilation of Nitrogen, Phosphorus, and Potassium by 
Coin When Nutrient Salts Are Confined to Different 
Roots - - - - - 
P. L. GILEandJ. O. CARRERO 
(Contribution from States Relations Service) 
Reduction in the Strength of the Mercuric-Chlorid Solu¬ 
tion Used for Disinfecting Sweet Potatoes - 
J. L. WEIMER 
(Contribution from Bureau of Plant Industry) 
Catalase, Hydrogen-Ion Concentration, and Growth in the 
Potato Wart Disease - - - - - - 
FREEMAN WEISS and R. B. HARVEY 
(Contribution from Bureau oi Plant Industry) 
Effect of Crowngall Inoculations on Bryophyllum - 
ERWIN F. SMITH 
(Contribution from Bureau of Plant Industry) . 
Effect of the Length of Day on Seedlings of Alfalfa Varie¬ 
ties and the Possibility of Utilizing This as a Practical 
Means of Identification - - - - 
R. A. OAKLEY and H. L. WESTOVRR 
(Contributionfrom Bureau of Plant Industry) 
Page 
507 
523 
541 
545 
575 
589 
593 
599 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 
WITH THE COOPERATION OF THE ASSOCIATION OF 
LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
WASHINGTON : GOVERNMENT PRINT1NO OF1MOK t ItSI 
