. XXV JULY 7, 1923 No. 1 
CONTENTS 
Work and Parasitism of the Mediterranean Fruit Fly in Hawaii 
during 1919 and 1920 - - - ~ " 
H. F. WILLARD 
(Contribution from Bureau of Entomology) 
Add Production by Rhizopus tritici in Decaying Sweet Potatoes 
H. A. EDSON 
; ■ (Contribution from Bureau of Plant Industry) 
Temperature Effects in Plant Metabolism - - - - 
W. R. TOTTINGHAM 
(Contribution from Wisconsin Agricultural Experiment Station) 
Piatygaster vemalis Myers, an Important Parasite of the 
Hessian Fly - - - - - 
CHARLES C. HILL 
(Contribution from Bureau of Entomology) 
Page 
i 
13 
31 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF* AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
1923 
