THE AMERICAN JOURNAL 
OF 
ANATOMY 
EDITORIAL BOARD 
CHARLES R. BARDEEN, 
University of Wisconsin. 
HENRY H. DONALDSON, 
Wistar Institute of Anatomy. 
THOMAS DWIGHT, 
Harvard University. 
SIMON H. GAGE, 
Cornell University. 
G. CARL HUBER, 
University of Michigan. 
HENRY 
GEORGE S. HUNTINGTON, 
Columbia University. 
FRANKLIN P. MALL, 
Johns Hopkins University. 
J. PLAYFAIR McMURRICH, 
University of Toronto. 
CHARLES S. MINOT, 
Harvard University. 
GEORGE A. PIERSOL, 
University of Pennsylvania. 
McE. KNOWER, SECRETARY, 
Johns Hopkins University. 
VOLUME VII 
1907-1908 
THE AMERICAN JOURNAL OF ANATOMY 
BALTIMORE, MD., U.S. A. 
