Expeditions organized or participated in by the Smithsonian . Fig. 18.—One of the Three Sisters Springs tilled with boiling hot water,through which bubbles of steam are rising. Photograph by Fig. 19.—Great Sulfoscl Hut Spring, about one mile northeast of GreatFountain Geyser, elevation 7,300 feet. The main opening of the spring has atemperature of ° F. (93° to 94° C). Water cools toward run-off inforeground, to ° F. (78° C.). Siliceous deposits about this spring extendas cornices out over edges. Algal growth abundant in water at ° F. (57°C.). Fine specime


Expeditions organized or participated in by the Smithsonian . Fig. 18.—One of the Three Sisters Springs tilled with boiling hot water,through which bubbles of steam are rising. Photograph by Fig. 19.—Great Sulfoscl Hut Spring, about one mile northeast of GreatFountain Geyser, elevation 7,300 feet. The main opening of the spring has atemperature of ° F. (93° to 94° C). Water cools toward run-off inforeground, to ° F. (78° C.). Siliceous deposits about this spring extendas cornices out over edges. Algal growth abundant in water at ° F. (57°C.). Fine specimens were collected for National Museum. Photograph bvWalcott. 14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 t


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1912