THE AMERICAN ANATOMICAL MEMOIES 

 NUMBER 19 



THE GENETIC AND ENDOCRINIC 



BASIS FOR DIFFERENCES IN 



FORM AND BEHAVIOR 



AS ELUCIDATED BY STUDIES OF CONTKASTED 

 PURE-LINE DOG BREEDS AND THEIR HYBRIDS 



by 

 CHARLES R. STOCKARD 



and 

 collaborators 



WITH SPECIAL CONTRIBUTIONS ON BEHAVIOR 



by 

 O. D. ANDERSON AND W. T. JAMES 



DEPARTMENT OF ANATOMY, CORNELL UNIVERSITY MEDICAL COLLEGE, 

 NEW YORK, N. Y. 



* C. 



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

 and frontispiece 



Published by 

 THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 



PHILADELPHIA OCTOBER 1941 



