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"Old Faithful," Queen of Geysers, Yellowstone National Park, Wyo., U.S.A.

B.L. Singley,
OLD FAITHFUL, QUEEN OF GEYSERS, YELLOWSTONE PARK. This view of Old Faithful Geyser is an unusually "good catch." The steam is blown aside revealing the point of the column of water at an altitude of over 125 feet; while along down the column are seen several successive "arrow points" in the column of water; these indicate the successive impulses of the uplifting force in the caverns below. The waters of a geyser are pushed out, not by a steady, unvarying pressure, but by a rapid series of impulses--due, probably, to the accommodating elasticity of the pushing steam below in its efforts against gravitation and the friction of the geyser tube. The large amount of geyserite built up by Old Faithful indicates that the geyser has been working at its present rate at least a thousand years. Calculation has shown that the average eruption throws out a million and a 33,000,000 gallons per day--enough to supply a city of over 300,000 population. One stands amazed in the presence of such exhibitions of volcanic force and unusual phenomena.
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Photography,Stereoscopic,Yellowstone National Park,Wyoming
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