PROCEEDINGS 



-4 1 A, 



PHILADELPHIA. 



PART III, OCTOBER-DECEMBER, 1890. 



PUBLICATION COMMITTEE. 



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



Edw. J. Noi.AN, M. D., Thomas Mrehan, '^/^ 



J. H. Redkield. 



EDITOR : Edward J. Nolan, M. D. 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 



I,0«AN SQUARE. 

 1891. 



