THE AMERICAN JOURNAL 



OF 



ANATOMY 



EDITORIAL BOARD 



LEWELLYS F. BARKER, 



Johns Hopkinn Uidversily. 

 THOMAS DWIGHT, 



HariKird University. 

 JOSEPH MARSHALL FLINT, 



University of California. 

 SIMON H. GAGE, 



Cornell University. 

 G. CARL HUBER, 



University of Michigan. 



GEORGE S. HUNTINGTON, 



Columbia University. 

 FRANKLIN P. MALL, 



Johns Hopkins University. 

 J. PLAYFAIR McMURRICH, 



University of Michigan. 



CHARLES S. MINOT, 



Harvard University. 



GEORGE A. PIERSOL, 



University of Fennsylvania. 



HENRY McE. KNOWER, Secretary, 

 Johns Hopkins U^iiversity. 



VOLUME IV 

 J 905 



THE AMERICAN JOURNAL OF ANATOMY 

 BALTIMORE, MD., U. S. A. 



