

PROCEEDINGS ^ 



\\t ^tnilenm of Jxatutnl $tienft$ 



PHILADEIvPHIA. 



1899. 



PART I-JAjYUARY, FEBRUARY, MARCH. 



PUBLICATION COMMITTEE. 



Thomas Meehan, Charles E. Smith, 



Edw. J. Nolan, M. D., Henry Skinner, M. D., 



Henry A. Pilsbry. 



EDITOR : Edward J. Nolan, M. D. 



•' \ 



J 



PHILADELPHIA : 



>• ACADEMY OF NATURAL SCIENCES, 



LOGAN SQUARE. 



1899. 



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