1906 .] 
NATURAL SCIENCES OF PHILADELPHIA. 
593 
President, ..... 
Samuel G. Dixon, M.D. 
Vice-Presidents, .... 
Arthur Erwin Brown, 
Recording Secretary, 
Edwin G. Conklin, Ph.D. 
Edward J. Nolan, M.D. 
Corresponding Secretary, 
J. Percy Moore, Ph.D. 
Treasurer, ..... 
George Vaux, Jr. 
Librarian, ..... 
Edward J. Nolan, M.D. 
Curators, ..... 
Arthur Erwin Brown, 
Councillors to serve three years, . 
Samuel G. Dixon, M.D., 
Henry A. Pilsbry, Sc.D., 
William S. Vaux, Jr. 
Dr. C. Newlin Peirce, 
Committee on Accounts, . 
Philip P. Calvert, Ph.D., 
Thomas Biddle, M.D., 
Frederick Prime. 
Charles Morris, 
Councillor to serve an unexpired 
TERM OF TWO YEARS, . 
Samuel N. Rhoads, 
Dr. C. Newlin Peirce, 
John G. Rothermell, 
Howard Crawley, Ph.D 
Henry Tucker, M.D. 
COUNCIL FOR 1907. 
Ex-officio . — Samuel G. Dixon, M.D., Edwin G. Conklin, M.D., 
Arthur Erwin Brown, Edward J. Nolan, M.D., J. Percy Moore, Ph.D., 
George Yaux, Jr., Henry A. Pilsbry, Sc.D., and William S. Vaux, Jr. 
To serve Three Years. — Dr. C. Newlin Peirce, Philip P. Calvert, Ph.D., 
Thomas Biddle, M.D., and Frederick Prime. 
To serve Two Years . — Charles B. Penrose, M.D., Charles Morris, 
Benjamin Sharp, M.D., and Henry Tucker, M.D. 
To serve One Year . — Thomas Fenton, M.D., Edwin S. Dixon, John 
Cadwalader and Horatio C. Wood, M.D. 
Curator of Mollusca 
Assistant Librarian, 
Henry A. Pilsbry, Sc.D. 
William J. Fox. 
