THE AMERICAN JOURNAL 



OF 



ANATOMY 



Charles R. Bardebn 



University of Wisconsin 



Henry H. Donaldson 



The Wistar Institute 



Simon H. Gage 



Cornell University 



EDITORIAL BOARD 



G. Carl Huber 



University of Michigan 



George S. Huntington 



Columbia University 



J. Playfair McMtjrrich 



University of Toronto 



George A. Piersol 



University of Pennsylvania 



Henry McE. Knower, Secretary 



University of Cincinnati 



VOLUME 26 

 SEPTEMBER, 1919— JANUARY, 1920 



THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 



PHILADELPHIA, PA. 



