PEALE] HAYDEN's valley SPEINGS — WARM CREEK. 109 



ation. This seeming discrepancy may readily be nnderstood, however, by referring it 

 to the comparative feebleness with which the water is ejected in most of the members 

 of the Prairie Group. 



Professor Comstock also says that iron is less abundant, which want 

 he refers to the constant and rapid flow of water observed in the group. 

 He also says: 



The small amount of special deposits formed by precipitation from the water after 

 it has become condensed by cooling poinds to the conclusion that the solution of the 

 subterranean rocks is less complete than in many localities. 



It bas been my experience that the waters of the springs of these re- 

 gions, with the exception of the sulphur springs, do not precipitate 

 much, if any, deposit upon cooling, but that the formation of deposits 

 is due almost entirely to the evaporation of the water, and that the 

 character of the deposits varies according to the circumstances under 

 which the water evaporates. 



Another important collection of thermal springs occurs two or three miles farther 

 up the valley of Warm Spring [Alum] Creek. These were just in view from the point 

 at which we turned southward away from the creek. * * * The water which 

 flows from them remains quite hot until it has reached a point below our crossing. 

 * * * So far as we were able to ascertain, the prominent springs of this upper group 

 emerge from the volcanic rock. Quantities of vapor were ascending from the locaKty 

 at the time of our passing. 



If the distances given by Professor Comstock are correct, it would indi- 

 cate that the springs last mentioned are the ones marked "Violet 

 Springs" on the map of the Park in this volume, whicb I think on this 

 point incorrect. 



BOILING SPRINGS NEAR SOURCE OF WARM SPRING CREEK.* 



The springs described by Professor Comstock under this head are, 

 judging from the maps accompanying his report, about a mile or a mile 

 and a half east of the Hot Sulphur Springs indicated on the map of the 

 Park. The latter, as will be noted further on, give off considerable sul- 

 phureted hydrogen, which this group, as indicated by Professor Comstock 

 and Dr. C. L. Heizraan, does not to any great extent, and have deposits 

 that are mainly siliceous. The locality is indicated as follows by Pro- 

 fessor Comstock: 



After crossing Warm Spring [Alum] Creek [near Violet Springs?] we pushed on in 

 a southwesterly course for several miles. * * * After a time we were able to pro- 

 ceed, when we soon struck a trail (Barlow's, 1871) for which we had been searching, 

 which led us near to the source of the creek. By leaving the trail at a point where 

 it turns to make a considerable detour, we made an advantageous cut-off, not impracti- 

 cable for riding animals, and quickly reached an interesting group of springs, in the 

 neighborhood of which we spent the night. 



The following descriptions are copied from Professor Comstock's re- 

 port: 



The stream on which these hot springs are situated probably comes from cold springs 

 Bome distance above, a number of which also add to its volume from along its sides in 

 a meadow above our camp. Here it .also meets with a number of hot springs, which, 

 with the contributions from the numerous boiling spriogs below, soon render the water 

 expressively hot. 



The springs are scattered along both sides of the creek above and below, but the 

 most powerful and interesting bowls occur near the edge of the current, on the left 

 bank, just within the lower end of the short pass, or gorge. This set of jets, as they 

 have been called, is the nearest approach to geysers that wo have yet noticed, and, in 

 the ordinary acceptation of the term, it would not be improper to designate them thus, 

 but it will be more convenient and, for our purpose, more correct to describe them 

 under the present head. * * * These springs vary in size and intensity from 



'Report of Recennaissance of Northwestern Wyoming, p. 217. 



