FEB 28 1923 
ANNUAL REPORTS 
The Academy of Natural Sciences 
OF 
Philadelphia 
FOR THE YEAR ENDING NOVEMBER 30, 1921. 
Officers and Council 1922 . 
Edwin G. Conklin, 
Recording Secretary, 
James A. G. Rehn. 
President 
John Cadwalader. 
Vice Presidents. 
Henry Skinner. 
Corresponding Secretary, 
J. Percy Moore. 
T reasurer. 
George Vaux, Jr. 
Librarian. 
Spencer Trotter. 
Curators. 
Witmer Stone, 
Henry A. Pilsbry, 
Robert G. LeConte, 
Morgan Hebard, 
Charles B. Penrose 
Charles Morris, 
George Spencer Morris,* 
Henry Tucker. 
Additional Members of the Council. 
ClaSS of IQ22. 
George L. Harrison, Jr., 
Milton J. Greenman. 
Class of i cj2j . 
William E. Hughes, 
Roswell C. Williams, Jr. 
'Since deceased. 
