M2 Cope — Sketch of (Dr. Hay den. 
*" Tlie-niun-who-picks-up-stoncs-rumiing." On one occasion, 
while he was engaged in an exploration of the beds of the Lara- 
mie formation of the upper Missouri, he was chased by Indians 
for many miles. When at last they oyertook him, they were 
surprised to find him armed only with the geologist's pick and 
hammer, and proceeded to search him. They examined the 
bags which he carried, and turned the fossil bones and shells 
which they contained out upon the ground. Finding nothing 
•of yalue to them, they concluded that he was crazy, and left him 
without harm. 
His reports of the exploration of the famous Yellowstone re- 
gion in 1S70 and 1S71 induced Congress to set apart by law as 
a national park three thousand fi\"e hundred and seyenty-five 
square miles of the public domain, containing within its limits 
most of the geysers, hot springs, and other wonders of that 
region. 
Dr. Ilayden's yicws were broad, and he possessed the true 
i^cientific instinct. This w'as perhaps mingled with more restless- 
ness and less patience than is desirable for the closet investi- 
gator, but this character admirably adapted him for pioneer 
work, and for the organization of inyestigation. As a collector 
he was unsurpassed, and the material he obtained was the basis 
of the w^ork of many men, among whom ma}- be especially 
mentioned, Meek, Leidy and Baird. Hayden's influence was 
second only to that of Baird's in securing for science the aid and 
recognition which it has received from the go\ernment of the 
United States. 
.Vt the period of his greatest success Haydcn was always the 
^ame unpretentious and enthusiastic seeker for knowledge. He 
was singularly free from sordid motives, and he left the service 
of the government a poor nian. The most prominent features 
of his character were; restless activity, ambition to accomplish 
a useful career, love of scientific truth, sympathy for unpreten- 
tious merit, and a certain flexibility of character wdiich enabled 
him to adapt himself to his environment more readily than is 
possible to many men. His charity was lavish, and his affability 
was unbounded. These characteristics sometimes led persons 
but superficially acquainted with him to undervalue his merits; 
but those who knew the place he filled in the economy of x\mer- 
