PROCEEDINGS 



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.^Ctulemg of |iatural ^ficuces 



PHILADELPHIA. 



PART I,— JANUARY to MAY, 1883. 



' 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. 





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PHILA.DELPHIA: 

 ACADEMY OF NATURAL SCIENCES, 



S. W. (.'or. of 19th and Race Streets. 

 1883. 



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