THE BOTANISTS OF PHILADELPHIA. 295 



medicine in 1857, and matriculated at the Jefferson Medical 

 College, from which school he was graduated on March 

 25, 1859. 



During his college course, the attention of Professor 

 Samuel D. Gross was attracted to him by the assiduity dis- 

 played in his studies, and furthermore by the successful 

 management of an aneurism case treated by digital com- 

 pression. As a result he was appointed Chief of the Surgical 

 Clinic soon after graduation. He lectured on practical 

 anatomy at the Philadelphia School of Anatomy and 

 Operative Surgery, and also conducted a quiz on materia 

 medica. From his graduation to the breaking out of the 

 Civil War, he was an active practitioner of medicine, and in 

 1860 was a delegate to the American Medical Association, 

 held in New Haven, Connecticut. 



But the fire of patriotism proved too strong for the 

 peaceful tenets of his fathers, and led him early in the war 

 to apply for the position of assistant surgeon in the regular 

 army. He successfully passed the rigorous examination, 

 and his commission was dated April 16, 1862, signed by 

 the President, Abraham Lincoln, and Edwin M. Stanton, 

 Secretary of War. 



On September 14, 1863, he was appointed Medical 

 Purveyor to the Army of the Potomac, and he retained that 

 position to the close of the war. During his entire army 

 life he continued his botanical studies and collection of 

 plants. At this time it was his good fortune to meet 

 another officer equally interested in the study of the same 

 science, Major-General G. K. Warren. A wayside flower 

 served as a means of introducing these officers, and the 

 occasion of that meeting was a favorite reminiscence of 



