Vol. XXVIII 
APRIL 5, 1924 
JOURNAL OF 
AGRICULTURAL 
RESEARC 
8E 
ICETTKB 
CONTENTS 
Anatomy and Metamorphosis of the Apple Maggot, Rhagoletis 
pomonella Walsh - - - 
R. E. SNODGRASS 
(ContributionfromBureau of Entomology) 
Chemical and Biological Studies with Cyanamid and Some of Its 
Transformation Products - - - - - 
K. D. JACOB, F. E. ALLISON, and J. M. BRAHAM 
37 
(Contribution from Fired Nitrogen Research Laboratory) 
Grossularia echinella, a Spiny-Fruited Gooseberry from Florida - 
FREDERICK V. COVILLE 
(Contribution from Bureau of Plant Industry) 
71 
Fowl Typhoid, Its Dissemination and Control - 
B. F. KAUPP and R. S. DEARSTYNE 
(Contribution from North Carolina Agricultural Experiment Station) 
75 
Effects of the Modified Hot-Water Treatment on Germination, 
Growth, and Yield of Wheat - - - - 
v. F. TAPKE 
Contribution from Bureau of Plant Industry) 
79 
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 
