PROCEEDINGS 



ACADEMY OF NATURAL SCIENCES 



PHILADELPHIA, 



1899. 



COMMITTEE ON PUBLICATION: 



Thomas Meehan, Charles E. Smith, 



Edward J. Nolan, M.L)., Henry Skinner, M.D., 



Henry A. Pilsbry. 



Editor: EDWARD J. NOLAN, M.D. 



PHILADELPHIA : 

 THE ACADEMY OF NATURAL SCIENCES, 



LOGAN SQUARE. 

 1900. 



