| of the Yellowstone and Firehole Rivers. 175 
But the most accommodating, and, in some respects, the most 
instructive geyser in this basin was called by Messrs. Langford 
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cession of impulses is goes? held steadily ns for the space 
of fifteen minutes, the water falling 
ter and overflowing in large quantities. It then ceases, and 
with a rush of steam for a few seconds closes the display for 
the time. Words can convey but an inadequate conception of 
the intense excitement which the scene produces upon the mind. 
