

PROCEEDINGS 



mi^'f,ns 



m^'' 



OF THE 



ftad^mg 0f jfaittrHl Icienan 



OF 



PHILADELPHIA. 



'i 



PART I,^January, Fehviiavy, 1873. 



PUBLICATION COMMITTEE. 



Joseph Leidy, M.D., VVm. S. Vacx, 



Robert Bridges, M.D., Geo. W. Tryon, Jr., 



y Edw. J. Nolan, M.D. 



S 



<\ 



4 



philadp:lphia: 



ACADEMY OF NATURAL SCIENCES, 



Corner of Broad and Sansom Streets. 



1873. 



