^ 



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PROCEEDINGS 



^^cailemg of ^atural |^fienct$ 



®: 



PHILADELPHIA. 



PART II.— 3IAY— OCTOBER, 1H84. 



PUBLICATION COMMITTEE. 



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



Edw. J. Nolan, M. D., Thomas Meehan, 



J. H. Redpield. 



EDITOR: Edward J. Nolan, M. D. 



PHILADELPHIA: 

 ACADEMY OF NATURAL SCIENCES, 



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

 188 4. 



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