THE BOTANISTS OF PHILADELPHIA. 317 



Academy for 1860. It was entitled, " Contributions to the 

 Carboniferous Flora of the United States, and Catalogue 

 of the Carboniferous Plants in the Museum of the Academy, 

 with Description of Three New Species." 



Immediately after graduating in medicine. Dr. Wood 

 was appointed one of the resident physicians of the Phila- 

 delphia Hospital, where he remained one year, after which 

 he served a similar term at the Pennsylvania Hospital, 

 spending, during the war, considerable time in the military 

 hospitals in and about Philadelphia and Washington. He 

 commenced the active practice of his profession in Phila- 

 delphia in 1865. He now began the special work in 

 therapeutics and materia medica, but still continued his 

 natural history studies, and published several papers on 

 natural science, especially on histological botany. His chief 

 botanical work, " Prodromus of a Study of North American 

 Fresh-water Algse," which long remained the standard 

 work on the subject, until the work of Wolle appeared, was 

 published June 18, 1869. 



In 1866 Dr. Wood was appointed by the Trustees of 

 the University of Pennsylvania, Professor of Botany in the 

 Auxiliary Faculty of Medicine, which had been established 

 and endowed by his uncle. Professor George B. Wood. 

 About 1870 he began to study especially nervous diseases, 

 and on the organization of the new university hospital, in 

 March, 1874, he was appointed Clinical Lecturer on Nervous 

 Diseases, which position, in 1875, was made a professorship 

 by the Trustees of the University. In 1870 he was appointed 

 one of the visiting physicians of the Philadelphia Hospital, 

 and since 1872 he has given his attention solely to the 

 science and art of medicine, abandoning entirely his general 



