87 



1815. 



Robert Patterson, 



Benjamin Smith Barton, M.D., 



Jonathan Williams. 



1816 to 1818, inclusive. 



Robert Patterson, 

 William Tilg-hman, 

 Peter S. Duponceau. 



1819 to 1824, inclusive. 



Robert Patterson, 

 Peter S. Duponceau, 

 Zaccheus Collins. 



1825 to 1827, inclusive. 



Peter S. Duponceau, 



Zaccheus Collins, 



Robert M. Patterson, M.D. 



1828 to 183O, inclusive. 



Zaccheus Collins, 



Robert M. Patterson, M.D., 



Nathaniel Chapman, M.D. 



1831. 



Zaccheus Collins, 

 Joseph Hopkinson, 

 Nathaniel Chapman, M.D. 



1832 to 1835, inclusive. 



Nathaniel Chapman, M.D., 

 Joseph Hopkinson, 

 George Ord. 



1836 to 1842, inclusive. 



Nathaniel Chapman, M.D., 

 Joseph Hopkinson, 

 Robert M. Patterson, M.D. 



1843, 1844. 



Nathaniel Chapman, M.D., 

 Robert M. Patterson, M.D., 

 Franklin Bache. 



1845 to 1848, inclusive. 



Nathaniel Chapman, M.D., 

 Alexander Dallas Bache, 

 Franklin Bache. 



1849 to 1852, inclusive. 



Franklin Bache, 

 Alexander Dallas Bache, 

 John K. Kane. 



1853, 1854. 



Alexander Dallas Bache, 



John K. Kane, 



Robley Dunglison, M.D. 



1855, 1856. 



John K. Kane, 



Robley Dung-lison, M.D., 



John F. Frazer. 



1857. 



John K. Kane, 

 John F. Frazer, 

 John C. Cresson. 



1858. 



Robley Dung-lison, M.D., 

 John C. Cresson, 

 Isaac Lea. 



1859 to 1868, inclusive. 



John C. Cresson, 



Isaac Lea, 



George Sharswood. 



1869 to 1876, inclusive. 



JohnC. Cresson, 

 Isaac Lea, 

 Frederick Fraley. 



1877 to 1879, inclusive. 



Frederick Fraley, 

 Eli K. Price, 

 E. Otis Kendall. 



