i. 30 , no ' b 
MARCH 1, 1925 
No. 5 
JOURNAL OF 
AGRICULTURAL 
RESEARCH 
CONTENTS 
Comparison of Direct and Indirect Calorimetry in Investigations with Cattle 
MAX KRISS 
The Life History of Pilacre Faginea (Fr.) B. and Br. 
C. L. SHEAR and B. O. DODGE 
toxicity Studies with Dicyanodiamide on Plants 
i F. E. ALLISON, J. J. SKINNER, and F. R. REID 
Studies on the Single-Injection Method of Vaccination as a Prophylactic Against 
Rabies in Dogs 
6 HARRY W. SCHOENING 
Ihe Strawberry Root Louse in Tennessee. 
S. MARCOVITCH 
The Effect of Sulphur and Gypsum on the Fertility Elements of Palouse Silt Loam - 
LEWIS W. ERDMAN 
Phytophthora Rot of Pears and Apples.* 
DEAN H. ROSE and CARL C. LINDEGREN 
Some Physical and Chemical Properties of Carotin and the Preparation of the Pure 
Pigment - - - - F . M . schertz 
The Life History of the Texas Root Rot Fungus, Ozonium omnivorum Shear - 
C. L. SHEAR 
The Distribution of the Alfalfa Weevil (Phytonomus posticus Gyll): A Study in Physi- 
cal Ecology - - - william c. cook” ' ‘ " 
Page 
393 
407 
419 
431 
441 
451 
463 
469 
475 
479 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
