1888.] 61 [Lesley. 
Dr. Hayden will be remembered as one of the great discoverers of the 
world in the history of the science of geology. He will be recognized as 
a man who really opened a new world in the far West to intelligent curi- 
osity and detailed exploration. His influence in educating the western 
population of the United States was as great as that of Agassiz, in inspiring 
the population of the eastern States with an enthusiastic admiration for 
natural history. The two men cannot be compared ; for their personalities, 
their scientific objects, and their methods of research were in strong con- 
trast. Each was an acknowledged leader in his special realm. There 
was the same indescribable power exercised over a great number of minds. 
Whatever Agassiz asked for in New England was immediately granted, 
and with enthusiasm. Whatever Hayden asked for from the people, the 
politicians, and the Governors of the new States and Territories was 
allowed to be useful and desirable, and the means placed at his disposal. 
He represented in science the curiosity, the intelligence, the energy, the 
practical business talent of the western people. In a few years they 
came to adopt him as their favorite son of science. He exactly met the 
wants of the Great West. There was a vehemence and a sort of wildness 
in his nature as a man which won him success, codperation, and enthu- 
siastic reputation among all classes, high and low, wherever he went. In 
the wigwam, in the cabin and in the court-house he was equally at home, 
and entirely one with the people. He popularized geology on the grandest 
scale in the new States and Territories. He easily and naturally affiliated 
with every kind of explorer ; acting with such friendliness and manly 
justice towards those whom he employed as his co-workers that they pur- 
sued with hearty zeal the development of his plans. 
In dealing with the public men of the country he was so frank, forcible 
and direct that it was impossible to suppress or resist him. He had the 
western people at his back so heartily and unanimously that he was for a 
long time master of the scientific situation at Washington. He was a 
warm personal friend of some of the highest officials of the Government, 
who never failed to support strenuously and successfully his surveys. I 
think that no one who knows the history of geology in the United States 
can fail to recognize the fact that the present magnificent United States 
Geological Survey, now under the direction of Major Powell, is the legiti- 
mate child of Dr. Hayden’s territorial surveys. 
Dr: Hayden first conceived the idea of setting aside for national use, as 
a perpetual park, the region of the Yellowstone geysers. This idea he 
urged with such success upon Congress, that a law prepared under his 
direction was passed to that effect. Such a notion would probably have 
not occurred to the mind of a geologist occupied with the purely scien- 
tific details of a new country; and it illustrates excellently well the practi- 
cal turn of his character. 
