194 THE MOUNTAIN. 



speaks in general terms of a "carbonate of lime and oxide 

 of iron ; compact rocks of a dark-blue color, and strata of 

 heavy, hard, micaceous basalt, having a bright metallic 

 lustre when broken." The springs are represented by him 

 as very numerous, and of a diversified character, but, as a 

 general thing, thermal and saline. 



In the recent Reports of Railroad Surveys, there is a 

 thermal spring spoken of in Des Chutes Yalley, Oregon 

 Territory. The spring is said to "give a peculiar character 

 to the region around for some miles in extent." The tem- 

 perature of the water is 145 P. ; and the basin into which 

 it flows is represented as "being filled with floating jelly- 

 like masses of silica." 



At Pike's Peak are located the carbonated or boiling 

 springs, which are 6350 feet above the level of the sea, in 

 latitude 38 25', longitude 105 22' west. The springs 

 here are large and beautiful, boiling and bubbling with the 

 quantity of gas contained. They are acidulous and much 

 impregnated ; have a temperature of 54 "3 P. ; others 57 P. ; 

 and contain carbonate of lime and magnesia, sulphate of 

 lime, chloride of calcium and magnesium, silica, and vege- 

 table matter. Carbonate of lime is the leading element of 

 the mineral substances. 



