PROCEEDINGS 



1 



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PHILADELPHIA. 



PARTI. JAJVUARY-MARCH, 1890. 



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. 



1^ 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 



LOGAN SQUARE. 

 1890. 



