Vol. IV SJePTEAlBKR, 1915 No. 6 



JOURNAL OF 



AGRICULTURAL 



RESEARCH 



CONTENTS 



Page 



Degree of Resemblance of Parents and Offspring with Respect 



to Birth as Twins for Registered Shropshire Sheep 

 H. L. RIETZ and ELMER ROBERTS 



. 479 



Soil Protozoa , . , , 511 



GEORGE P. KOCH 



Tylenchus Similis, the Cause of a Root Disease of Sugar Cane 

 and Banana . . • . . 



N- A. COBB 



Index and Contents of Volume IV ^^^ 



DEPARTMBNT OF AGRICUIvTURE 



WASHINGTON, DC. 



bn 



V/A8HIHGT0N : OOVCRNMEMT PRINT'NG CFFICE : tflfi 



