THE BOTANISTS OF PHILADELPHIA. 203 



Professor of Materia Medica in the Philadelphia College of 

 Pharmacy, which election took place in 1836 ; he held this 

 post until the year 1850. While occupying this position, he 

 was assiduous in other good works, still working zealously 

 for the Academy of Natural Sciences, and adding to the 

 duties and labors of his chair the editing of the American 

 Journal of Pharmacy, assisted by Dr. Bridges, and subse- 

 quently by Professor William Proctor. While connected 

 with the College of Pharmacy, Dr. Carson edited, with notes 

 and additions, two editions of Pereira's " Materia Medica," 

 and in 1847 published his beautiful and creditable "Illustra- 

 tions of Medical Botany," in two quarto volumes, having, 

 it is said, drawn and colored many of the plates himself. 



In the spring of 1844, Drs. Carson, Paul B. Goddarcl, 

 Wm. Poyntell Johnson, Caspar Morris, M. P. Hutchinson, 

 James B. Rogers and William W. Gerhard, became the 

 lecturers in the Medical Institute of Philadelphia, which 

 had u originated under the auspices of Dr. Chapman, 

 Professor of Theory and Practice of Medicine in the Univer- 

 sity of Pennsylvania." 



He was elected a physician of the lying-in department 

 of the Pennsylvania Hospital, to fill the place of Dr. Charles 

 D. Meigs, resigned, and occupied this position, associated 

 with Dr. Hugh L. Hodge, from 1849 until May, 1854, when 

 this part of the hospital was closed. 



Dr. Carson was elected a member of the American 

 Philosophical Society, and was its Curator for seventeen 

 years ; he also served on the publication committee and on 

 the library committee. He was highly esteemed as a 

 member of the Board of Directors of the Philadelphia Trust 

 and Safe Deposit Company, to which position he was elected 



