m 



^aaaoanMaaoHi^us 



&, 



SS? 1 ^, 





PROCEEDINGS 



OF Til 12 



nulnuji of jptoral Srienas 



OF 



PHILADELPHIA. 



PART I. January, February, and March, 1879. 



PUBLICATION COMMITTEE. 



Joseph Leidy, M.D., 

 Wm. S. Vadx, 



Geo. H. Horn, M.D., 

 Thomas Meehan, 



J. 11. Redfield. 



EDITOR: Edward J. Nolan, M.D. 





\ 



) 



-x 



8 



PHILADELPHIA: 



ACADEMY OF NATURAL SCIENCES, 



S. W. Corner of 1 9th and Race Streets. 



1879. 



