65 1923 
ANNUAL REPORTS 
The Academy of Natural Sciences 
OF 
Philadelphia 
FOR THE YEAR ENDING NOVEMBER 30, 1922. 
Officers and Council 1923 
President. 
R. A. F. Penrose, Jr. 
Vice Presidents. 
Edwin G. Conklin, Henry Skinner. 
Recording Secretary. 
James A. G. Rehn. 
Corresponding Secretary. 
J. Percy Moore. 
Treasurer. 
George Vaux, Jr. 
Librarian. 
Spencer Trotter. 
Curators. 
Wither Stone, George L. Harrison, Jr., 
Henry A. Pilsbry, T. Chalkley Palmer. 
Additional Members of the Council. 
Class of IQ2J. 
Roswell C. Williams, Jr., 
Thomas S. Gates. 
Charles B. Penrose, 
William E. Hughes. 
