X^iyi/ •- yyi/ecJZJi 



J 1) U 11 N A L 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF 



PHILADELPHIA. 



NEW SERIES. VOL. I. PART I 



Ui Mi .1 (-V Ki.i.i.OGG 



i.lBR^RY OH 



M A K 1 N E M AM i\ I ALOGY 

 SMITHSONIAN INSTITUTION 



PHILADELPHIA : 

 I'RIN'I'KD FOR THE SOCIETY, 



II V M i; 11 li I 11 R W Sr THOMPSON, NO. 7 C A K T K R ' >; \LLEY. 



1S47. 



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