. Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872. ng table will present the results of the observations on thevarious geysers as made by myself. Other points of interest will befound in the various reports: 156 GEOLOGICAL SURVEY OF THE TERRITORIES. Name. 1^ o Averagelength oferuptions. Average in-terval be-tween erup-tions. 3 g a 1 e >«| s (c £ Old Faithful 17. 313312 m. s. 4 53. 07 8 10 7 13 15 30 28 00 15 CO 125 30 h. m. s. 1 2 45 23 17
. Sixth annual report of the United States geological survey of the Territories, embracing portions of Montana, Idaho, Wyoming, and Utah : being a report of progress of the explorations for the year 1872. ng table will present the results of the observations on thevarious geysers as made by myself. Other points of interest will befound in the various reports: 156 GEOLOGICAL SURVEY OF THE TERRITORIES. Name. 1^ o Averagelength oferuptions. Average in-terval be-tween erup-tions. 3 g a 1 e >«| s (c £ Old Faithful 17. 313312 m. s. 4 53. 07 8 10 7 13 15 30 28 00 15 CO 125 30 h. m. s. 1 2 45 23 17 30 Feet130 39 93 173 25 41 ,3977,4027 408 Bee-Hive Giantess Castle 7 387 Grand 24 10 30 Turban 7,387 Grotto 7 324 As we go from the Grotto Geyser down the river on the oppsite side,we pass through the timber at the foot of a hill. Emerging from the trees the first springwe meet with is situ-ated at the top of thehill some distanceabove the level of theriver. This spring isbordered by cauli-flower-like forms ofgeyserite, which havea greenish tinge. Thewater flows from thespring in several smallstreams, the bed ofeach one being a brightorange color. Thewater flowing down theAn analysis of a. PLAN OF GKOTTO GEYSER. a a, Orifices of cones ; b 6, Outlets for water. hill becomes cool long before it reaches the river,specimen from the edge of this spring is as follows : Color, greeuish-gray; fracture, conchoidal; luster, dull; hardness outside 3, inside 6. Analysis. Per cent. Loss at 110° C Loss on ignition ^ Silica Alumina Iron 717 Lime 28 Magnesia Tro ce. Soda Trace. Potassa. Trace. Lithia Trace. Thinking that the hot springs would have considerable influence onthe temperature of the water in the river, I took the following tempera-tures in the Fire-Hole and Madison Rivers : GEOLOGICAL SURVEY OF xkE TEKEITORIES. 157 Position. Time. Ph a o Above Old Faithful Belo-n- Old Faithful, opposite Bee-Hive Opposite Grand Geyser Above Giant Below Grotto
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