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Academy of Natural t^ciENCES ok Philadklphia, 



March, 1881. 



I hereby certify that printed copies of the Proceedings for 1880 have been 

 presented at the meetings of the Academy, as follows : — 



Pa: 



EDWARD J. NOLAN, 

 Becording Secretary. 



PHILADELPHIA 



W. P. KiLDARE, Printer. 



