Annual report of the Board of Regents of the Smithsonian Institution . StroRr 70-^75 feet. Geysir Sections ol Geysur ;iud Stiokr showing lissurus sujiplyinp; geyser tubes (after Campbell). site a ledge and fissure discovered subsequent to Bunsens this depth the temiierature is 2° C. below the temperature at whichthe water can boil. If by the continued heating of this layer by steamfrom the fissure it attains the temperature at which it can boil, steamis formed, whose expansive force lifts the superincumbent column ofwater, causing a slight overflow at the top, which, shortening
Annual report of the Board of Regents of the Smithsonian Institution . StroRr 70-^75 feet. Geysir Sections ol Geysur ;iud Stiokr showing lissurus sujiplyinp; geyser tubes (after Campbell). site a ledge and fissure discovered subsequent to Bunsens this depth the temiierature is 2° C. below the temperature at whichthe water can boil. If by the continued heating of this layer by steamfrom the fissure it attains the temperature at which it can boil, steamis formed, whose expansive force lifts the superincumbent column ofwater, causing a slight overflow at the top, which, shortening the col-umn, brings the layer B to the position C, where its temperature isabove the boiling point of C, wherefore steam is formed at this point anda further lifting and relief of pressure ensues, followed by an eruption. In illustration of this theory a model geyser is easily constructed ofa glass tube of an inch or so in diameter and several feet long. When GEYSERS. 175 this tul)e is closed at one end, filled with water and placed upright wehave all the niechanis
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Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
