, jr; 



THE AMERICAN ANATOMICAL MEMOIRS 

 NUMBER 19 



THE GENETIC AND ENDOCRINIC 



BASIS FOR DIFFERENCES IN 



FORM AND BEHAVIOR 



AS ELUCIDATED BY STUDIES OF CONTRASTED 

 PURE-LINE DOG BREEDS AND THEIR IIYBKIDS 



A 



Charles R. Stock ard 



and 



collaborators 



WITH SPECIAL CONTRIBUTIONS ON BEHAVIOR 



by 



O. I). ANDERSON and W. T. JAMES 



DEPARTMENT OF ANATOMY. CORNELL UNIVERSITY MEDICAL COLLEGE, 

 NEW YORK, N. Y. 



One hundred twenty-eight text figures, one hundred thirteen plates, 

 and frontispiece 



Published bi/ 



THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 



PHILADELPHIA OCTOBER 1941 



