PROCEEDINGS 



* t f 



PHILADELPHIA. 



PAFiT IL MARCH-SEPTEMBER, 1888. 



PUBLICATION COMMITTEE. 



Joseph Leidy, M. D., Geo. H. Horn, M. D., 



Edw. J. Nolan, M. D., Thomas Meehan, 



J. H. Redfield, 



EDITOR: Edward J. Nolan, M. D. 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 



LOGAN SQUARE, 



1888. 



