PROCEEDINGS 



i 



Icctriemg of matutcil $cienre$ 



PH I LADELPHIA. 



PART I. — January f February and March, 18 SO. 



PUBLICATION COMMITTEE. 



Joseph Leidy, M. D., . Geo. H. Hokn, M. I) , 



Wm. S. Vaux, Thomas Meehan, 



• J. H. Redpieid. 



EDITOR: Edward J. Nolan. M. I). 



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PITIL AT)EI,PHIA: 

 A(»AI)EMY OF NATURAL SCIENCES, 



S. VV. Cot. of 19th and Race Streets. 

 1880. 



