Expeditions organized or participated in by the Smithsonian . Fig. 16.—Algal growth in cool pond where there was no mineral matter insolution to be deposited. Photograph by Walcott. 12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 It was found that algal growth was everywhere present when thetemperature of the waters was from 70° to not much ahove 180°Fahrenheit, and that this growth had a marked effect upon the. Fig. 17.—Three of the Seven Sisters Hot Springs above Black WarriorGeyser, one mile northeast of Great P^ountain Geyser. These springs, althoughvery beautiful and each o
Expeditions organized or participated in by the Smithsonian . Fig. 16.—Algal growth in cool pond where there was no mineral matter insolution to be deposited. Photograph by Walcott. 12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 It was found that algal growth was everywhere present when thetemperature of the waters was from 70° to not much ahove 180°Fahrenheit, and that this growth had a marked effect upon the. Fig. 17.—Three of the Seven Sisters Hot Springs above Black WarriorGeyser, one mile northeast of Great P^ountain Geyser. These springs, althoughvery beautiful and each of a different color, are rarely visited by tourists, andthe same is true of most of the Great Fountain group. Photograph by Walcott. amount and character of both calcareous and siliceous deposits. Someof these are shown in the accompanying illustrations. NO. 3 SMITHSONIAN EXPLORATIONS, I915 13
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1912
