JOURNAL 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF 



PHILADELPHIA. 

 JANUARY, 1821. 



List of Officers for t\\fc \eai! 1841. 



President. 



William Maclure. 



Vice Presidents. 



Zacclieus Collins, George Ord. 



Corresponding Secretary. 



Reuben Haines. 



Recording Secretary. 



Franklin Bache, M. D. 



Curators. 



Thomas Say, C. A. Le Sueur, J. P. Wetherill ? 



Thomas M'Euen. 



Treasurer. 

 Jacob Gilliams. 



Librarian. 

 Jacob Peirce. 

 Committee of Publication. 

 Thomas Say, Thomas Nattall, Joseph Dulles, 

 Isaac Hays, M. D. Isaac Lea. 



