Expeditions organized or participated in by the Smithsonian . ^-r^S. i Fig. II. Looking down into throat of small geyser near Firehole River inUpper Geyser Basin. A type of siliceous deposit relatively rare. Photographby Walcott. NO. 3 SMITHSONIAN EXPLORATIONS, I915

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1912