HENRY CHARLES LEA. 899 



Sir William was raised to the peerage in 1892 and was afterward 

 known as Lord Kelvin. His retirement from his professorship in 

 the University took place in 1896 and was the occasion of a jubilee 

 in his honor after fifty years of service. In this celebration many of 

 the foremost scientific men of the time took part. 



He died Dec. 17, 1907, and his remains now rest in Westminster 

 Abbey, next to the grave of Isaac Newton. A memorial window was 

 later placed in the Abbey in commemoration of his life and work. 

 He was twice married, but there were no children. In him were 

 united the greatest gifts, a mathematical ability of the highest order, 

 a deep scientific interest, an originality and industry most exceptional, 

 and a personality most modest and attractive. His great talents 

 were exercised not only in pure science, but were brought to bear with 

 equal fruitfulness on difficult practical problems, and led to the con- 

 ception and development by liim of many valuable inventions, to 

 some of which allusion has been made in the foregoing brief account 

 of his life. 



Elihu Thomson. 



HENRY CHARLES LEA (1825-1909) 



Fellow in Class III, Section 3, 1870. 



Henry Charles Lea, son of Isaac Lea and grandson of Mathew 

 Carey, was born in Philadelphia in 1825 and died there 24 October 

 1909. Of precocious ability, he was educated at home and b}' private 

 tutors, and at the age of eighteen entered his father's publishing house, 

 with which he remained actively connected until 1880. He took an 

 active part in the business and political life of his city and in public 

 matters generally, but his dominant interests were those of a scholar 

 and man of letters, manifested first in literary and scientific studies 

 printed in his early youth, and later in the monumental series of 

 books on mediaeval law and ecclesiastical history and institutions 

 which began to flow from his pen in 1866. The eighteen solid volumes 

 of his published works of history comprise: " Superstition and Force" 

 (1866, fourth edition, 1892); "History of Sacerdotal Celibacy" 

 (1867, enlarged edition, 1907); "Studies in Church History" (1869); 

 "History of the Inquisition of the Middle Ages" (1888; also in a 



