PROCEEDINGS 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF PHILADELPHIA. 

 Vol. I. SEPT. AND OCT, 1843. Nos. 30, 31. 



STATED MEETING, Sept. 5, 1843. 

 Mr. Lukens in the Chair. 



DONATIONS TO LIBRARY. 



Ail Essay on Calcareous Manures, third edition. By Ed- 

 mund Ruffin. 8vo. Petersburg, Va. 1842. From the 

 Author. 



Proceedings of the Zoological Society of London. Part 10th. 

 1842. From the Society. 



Annales des Mines. Quatrieme Serie. Tome 2d, 6! Liv. 

 de 1S42. In Exchange. 



WRITTEN COMMUNICATIONS. 



Two communications were read from the Zoological So- 

 ciety of London, dated respectively Dec. 20, 1842, and Jan. 

 23, 1843, acknowledging the reception of Nos. 17 to 19 of 

 the Proceedings, and of Part 2d, Vol. Sth, of the Journal of 

 the Academy. 



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