SKETCH OF HENRY AUGUSTUS ROWLAND. n 9 



ences, Washington ; honorary member of the Royal Society, of 

 London; one of the twelve honorary members of the London 

 Physical Society ; one of the ten honorary members of the Paris 

 Physical Society ; honorary member of the Royal Society of Got- 

 tingen; of the Accademia dei Lincei, Rome; Academy of Sci- 

 ences, Catania, Sicily ; of the Manchester Literary and Scientific 

 Society ; of the Cambridge (England) Philosophical Society ; of 

 the Swedish Academy of Sciences, Stockholm, of the Italian So- 

 ciety of Spectroscopists, etc. He is corresponding member of the 

 British Association, of the Institute of France, etc. 



In 1883 he presided over the Section of Physics of the Ameri- 

 can Association for the Advancement of Science at Minneapolis, 

 before which body he delivered an address, A Plea for Pure Sci- 

 ence, which was published and read with great interest through- 

 out the world. 



He was foremost among the members of the Electrical Con- 

 gress at Chicago, and was President of the International Chamber 

 of Delegates for the establishment of electrical units. The stu- 

 dents of the University of Chicago, who occupied front seats in 

 the Academy of Fine Arts when this body of learned men was 

 called to order, regarded Henry Augustus Rowland as second 

 only to his great teacher, the late Baron von Helmholtz. It is 

 possible that those who were privileged to be present on that oc- 

 casion will never again see, on a single platform, so many men of 

 international reputations. 



In 1880 the Johns Hopkins University conferred on him the 

 degree of Doctor of Philosophy. In 1895 Yale University con- 

 ferred on him the degree of LL. D. 



In 1890 Prof. Rowland was married to Miss Henrietta Harri- 

 son, of Baltimore, who is thoroughly interested in his work, and 

 is in perfect sympathy with him. They have two bright and 

 interesting children. His oldest, a little daughter, Harriette, 

 named for his mother, is four years old. His son, Henry Augus- 

 tus Rowland, though only three years of age, already bids fair to 

 follow in the footsteps of his distinguished father. The lad is 

 very fond of visiting the physical laboratory, and will for a long 

 time watch with silent and absorbed interest the movements of 

 the intricate machinery, which is kept constantly going under the 

 supervision of Mr. Schneider. 



Prof. Rowland is a tall, strongly built man, and can frequently 

 be seen at one of the windows in the basement of the physical 

 laboratory of Johns Hopkins University industriously working 

 and deeply absorbed in making investigations and experiments 

 which the vast majority of his fellow-citizens would not compre- 

 hend. Every one who approaches him is at once impressed by 

 his genuineness. His favorite exercise is horseback riding. Dur- 



