108 F. V. Hayden—Hot Springs and Geysers 
tinued to flow through apertures in the sides until it ceased — 
entirely. There are many examples of these rounded cones 
Upon the terrace, down about midway on the side of | 
the mountain covered with this deposit, the principal por — 
tion of the active springs are now located; and heres — 
then also various shades of green. All these colors a — 
rendered very vivid by the water. These springs also are 
full of a kind of vegetation, which under the microscope prove 
to be composed of Diatoms, among which Dr. Billings discov’ : 
ers Palmella and Oscillaria. There are also in the quiet springs, 
and in the little streams that flow from the boiling springs 
great quantities of a fibrous silky substance, apparently vegeta: 
ble, which vibrates at the slightest movement of the water, and 
has the appearance of the finest quality of cashmere wool. — 
I have mentioned only a few of the attractive features about 
these springs, which so charm the visitor. There is neither : 
time nor space in an article of this kind to describe all. a 
Above this middle terrace are one or two other localities about 
three hundred feet farther up on the sides of the mountalb, 
Here most of the springs have become extinct, a few occult of : 
here and there on a small scale, where they formerly existed 
the largest size. Now the surface is covered with the remains 
of an exhibition of natural architecture that must have pp 
; 0: . 
others. Here we find a splendid series of those semi-cire — 
basins, rising in steps to the very summit; but the rich pom 
ise 
4 
c 
lo “ he 
dently a mixture of lime and sulphur, covering the sides of the 
