1910.] NATURAL SCIENCES OF PHILADELPHIA. 263 



of lectures for that term. At the request of the Board of Trustees 

 it was continued and completed by Dr. Chapman. So acceptably was 

 the engagement fulfilled that he was appointed by the Board to the 

 vacant chair of Institutes of Medicine and Medical Jurisprudence in 

 the spring of the following year. He secured from Paris as promptly 

 as he could a collection of the most recent apparatus for physiological 

 investigation. It was with the assistance of portions of this collection — 

 Regnault and Reisert's instruments for the study of respiration and 

 Helmolz's Ophthalmometer — that his fine papers on respiration and 

 on the radius of the curve of the cornea were prepared, together with 

 those on the general physiology of nerves and muscles, in conjunction 

 with his assistant and successor in the chair, Dr. Albert P. Brubaker. 



His introductory lecture to his first year's course was published 

 by the Class. Considering the scope and purpose of physiology he 

 dwells on the advantages of a study of pathology and insists on the 

 importance of comparative anatomy, illustrating his position by 

 reference to the action of the pancreatic juice in the beaver and the 

 rabbit, the relation of the size of the brain to mental development 

 in the lower animals, and to the nature of the bile as studied in Doris, 

 one of the nudibranchiate mollusks. The limitations of the useful- 

 ness of vivisection in the prosecution of physiological research is 

 frankly acknowledged, but the practical results secured up to that 

 time were recounted and the opinion was expressed that, if vivisection 

 should be banished from the laboratory, the physiologist would be 

 deprived of one of his most fertile methods of research. 



Dr. Chapman addressed the graduating class of the College in the 

 Academy of Music, March 30, 1882, and again on April 2, 1890. On the 

 latter occasion he advises the graduates to get married as soon as they 

 can and dwells on the advantages to the young practitioner of the con- 

 jugal partnership. He considers the results of inductive and deductive 

 reasoning, claims that the latter is essentially the feminine mode 

 and assures his young hearers that matrimony will strengthen their 

 inductive masculine minds. 



He filled the chair in Jefferson College until the completion of last 

 year's course when he resigned, with the intention of devoting his 

 entire time to original research. His resignation was accepted with 

 regret and he was made Emeritus Professor. His skill in adapting 

 his physiological teaching to the practical needs of the physician was 

 fully recognized by his students and associates in the Faculty. During 

 the years of his connection with the College he never hesitated to 

 express with characteristic frankness and force his views on questions 



