JOSEPH HENRY. 367 



peaceful, and to himself the most profitable, part of his life 

 was that spent in Princeton, for which place, and the college 

 located there, he ever retained the warmest attachment. Mrs. 

 Henry survived him three years. His first born, a son, died in 

 early manhood and three children in early infancy ; his remain- 

 ing children, three daughters, are still living. 



Prof. Henry was the recipient of many well-deserved hon- 

 ours. He was elected to membership in many learned societies 

 at home and abroad. Several institutions of learning, includ- 

 ing Harvard College, conferred upon him the degree of LL. D. 

 A year after his death a memorial meeting was held in his 

 honour in the House of Representatives, and later Congress 

 erected a statue to his memory in the grounds of the Smith- 

 sonian Institution. Fifteen years after his death the electrical 

 congress, held at the time of the Columbian Exposition in Chi- 

 cago, gave his name to one of the electrical units. The 

 " henry " is " the induction in a circuit when the electro-motive 

 force induced is one volt, while the inducing current varies at 

 the rate of one ampere per second." When, in 1895, the sub- 

 jects of statues to stand in the new Library of Congress were 

 chosen, Henry was selected as one of the two for the scientific 

 alcove. 



