230 



ence in the debituminization in these different districts ; the eastern 

 group varying from 5 to 7 per cent, in the proportion of volatile mat- 

 ter, while the western group has a much larger pi-oportion, and varies 

 from 9 to 17 per cent., differing but 1 or 2 per cent, from that of 

 Blossburg, Queen's Run, Ralston and Cumberland, Md.; all these be- 

 ing on the eastern part of the great western coal field. 



The attention of the Society having been called by the Li- 

 brarian to the state of the manuscripts in the Library, it was, 

 on motion of Mr. Kane, resolved that a Committee be appoint- 

 ed to consider the present condition of the manuscripts in the 

 possession or custody of the Society, and that they report 

 whether any and what action may be proper for their secure 

 preservation, and for facilitating their usefulness. Committee, 

 Mr. Ord, Mr. Kane and Mr. Frazer. 



The following gentlemen were elected members of the So- 

 ciety: — 



Rev. George Peacock, F.R.S., of Cambridge, England. 



J. I. Clark Hare, Esq., of Philadelphia. 



Prof. Benjamin Peirce, of Harvard University, 



