480 
JEROME HENRY KIDDER. 
McCullough, daughter of John McCullough, of Glencoe, 
Maryland. 
Professor Irving’s work as a teacher and as an investigator 
were carried on side by side with equal success in each 
direction. His ability as a teacher has been highly com¬ 
mended both by his colleagues in the University of Wis¬ 
consin and by the students who received the benefits of his 
instruction. The results of his geological investigations are 
known to all who are interested in the earth’s history, and 
have been a credit to himself, to the Geological Surveys and 
to American science. 
Professor Irving became a member of this Society in 1886, 
but owing to the distance of his residence he was seldom 
able to attend its meetings. In March, 1886, he read an 
important paper on “ The Enlargement of Mineral Frag¬ 
ments as a Factor in Pock Alteration,” the only scientific 
communication that he made to the Society. 
JEROME HENRY KIDDER. 
Jerome Henry Kidder, whose untimely death has de¬ 
prived this Society of one of its most active and respected 
members, was born October 26, 1842, in Baltimore county, 
Maryland, and there his boyhood days were spent. En¬ 
tering Harvard College as a freshman at the age of six¬ 
teen years, he was graduated Bachelor of Arts in 1862, and 
shortly after, having tendered his services for the war, he 
was placed by General Saxton in charge of the Sea Island 
plantations, near Beaufort, S. C. There contracting yellow 
fever, he was obliged to return north early in 1863, but, upon 
recovery, he enlisted in the Tenth Maryland infantry, in which 
regiment he served as private and non-commissioned officer 
for about a year. He was then appointed a medical cadet, 
and in that capacity was employed in the hospitals near the 
capital until after the war had closed. The study of medi- 
