THE 
WILLIAM KEITH BROOKS 
MEMORIAL VOLUME 
EDITORIAL COMMITTEE 
Ethan A. Andrews 
Johns Hopkins University 
Edwin G. Conklin 
Princeton University 
Ross G. Harrison 
Yale University 
William H. Ho^t:ll 
Johns Hopkins University 
Horace Jayne 
The Wistar Institute 
Herbert S. Jennings 
Johns Hopkins University 
George Lefevre 
University of Missouri 
Thomas H. Morgan 
Columbia University 
Edmund B. Wilson 
Columbia University 
Henry H. Wilson 
University of North Carolina 
THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 
PHILADELPHIA, PA. 
1910 
