38 



erected at Tresavean Mine, for facilitating the ascent and descent 

 of Mines. From the Transactions of the Royal Cornwall Poly- 

 technic Society. — From Robert Were Fox, Esq. 



Purport of a Paper relative to Springs of Water. From the Transac- 

 tions of the same Society. Appendix, No. 1. — From the same. 



Report of the President and Managers of the Schuylkill Navigation 

 Company to the Stockholders, January I, 1844. 8vo. — From 

 S. W. Roberts. 



A Copy of the Minutes of the Commissioners for determining the 

 Line between Pennsylvania and Maryland ; taken from an au- 

 thenticated Copy in the possession of F. R. Hassler, by George 

 M. Justice, 1842. To which is appended, Original Vouchers, 

 exhibiting the Amount paid by the Penn Family, from the Year 

 1760 to 1768, to their Commissioners. Folio. MS. — From Geo. 

 M. Justice. 



ADDITIONS TO THE LIBRARY BY PURCHASE. 



Comptes Rendus des Seances de I'Academie des Sciences. Tome 



XVII. Nos. 18 to 21, inclusive. 1843. Tome XIV. No. 22. 



4to. 

 Journal Asiatique, 3e Serie. Tome XIII. No. 72. Tome XIV. No. 



79. 8vo. 

 Annates des Mines, Troisieme Serie. Tome III. No. IV. 1833. 



Tome V. 1834. Tome XVII. len. Livraison de 1840. 8vo. 

 Annales Chimie et de Physique. Troisieme Serie. Tome VIII., 



Juin, Juillet, Aout. Tome IX., Septembre, Octobre. 8vo. 

 Histoire Naturelle des Poissons, par M. le Baron Cuvier, et par M. 



Valenciennes. Tomes 8 to 16, inclusive. Paris, 1831, 1842. 4to. 



Mr. Smith exhibited an artificial magnet, having a south 

 pole at each extremity, and a north pole at the centre, which 

 had been handed to him by one of the superintendents of the 

 magnetic observatory at the Girard College. Mr. Smith made 

 some remarks upon it, which gave occasion to further observa- 

 tions from Dr. Bache and Professor Frazer. 



Agreeably to a provision of the by-laws, the list of surviving 

 rnembers of the Society was read. From this it appears that 

 the number on the first day of the present year was 344, 

 whereof 233 are residents of the United States, and 111 of 

 foreign countries. 



Mr. Ord was re-elected Librarian. 



