1895.] NATURAL SCIENCES <>F PHIIiADELPHl A. 457 



Surgeon, in the Mediterranean. This was his last period of service 

 on ship- board. He never again had occasion to go abroad; indeed 

 even short trips from Philadelphia were hereafter of infrequent occur. 

 rence. During the summer vacations when nearly all his associates 

 were absent from the city he remained at home, declaring that the 

 shady side of Chestnut Street was the most desirable summer resort 

 known to him. 



During a portion of the period of the civil war, from 1861 to 1864, 

 he was stationed at the Boston Navy Yard, where, in common with 

 everyone connected with the public service he found himself charged 

 with most engrossing duties. 



He was on special duty again in Philadelphia during 1865 and 

 1866 when his attention was professionally occupied with the affairs 

 of the Naval Hospital. He also discharged the duties of President 

 of the Board of Examiners with which he had before been connected 

 as a member. In the American Journal of Medical Sciences for 

 July, 1867 he published a paper entitled "Contributions to the 

 Statistics of Human Growth" based on an examination of 21 7 candi- 

 dates for admission to the Naval Academy at Annapolis. 



He was retired on age in 1869 with the rank of Surgeon, being 

 later promoted to the grade of Medical Director, with the relative 

 rank of Commodore, as a special recognition of long and efficient 

 service. 



While relieved from the performance of professional work in 

 connection with the United States Navy he was far from availing 

 himself of the opportunity to rest, or acknowledging the necessity of 

 doing so. He found himself physically and mentally as vigorous as 

 he had been for the past twenty years with every prospect of a long 

 life. His mother lived until ninety-eight years old. It was now that 

 his active connection with the Academy, the American Philosophical 

 Society and the College of Physicians was productive of the most 

 lasting results. 



On the organization of the Board of Trustees of the Building Fund 

 of the Academy in 1867 he had been chosen President thereof, and 

 from that time until his death, while the work of collecting subscrip- 

 tions was in progress and later during the erection of the buildings, 

 he was indefatigable in the discharge of the duties of this position. 

 The work accomplished is set forth in the fourteen elaborate pub- 

 lished reports prepared by him. They cover the operations of the 



