PROCEEDINGS 



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PHILADELPHIA. 



PABT III.— AUGUST to DECE^IBEJR, 1881. 



PUBLICATION COMMITTEE. 



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



Wm. S. Vatjx, Thomas Meehan, 



J. H. Redfield. 



EDITOR: Edward J. Xolan. M. D. 



PHILADELPHIA: 

 ACADEMY OF NATURAL SCIENCES, 



S. W. Cor. of 19th and Race Streets. 

 1882. 



