33 



No. 302. Our hunters, Jose and Joe Clark, returning from a success- 

 ful hunt, with pack-animal laden with elk meat. 



No. 303. The United States geological survey, with pack-train, 

 en route upon the trail between the Yellowstone and the East 

 Fork, showing the manner in which all parties traverse these 

 wilds. 



No. 304. An elk, Cervus Canadensis. Very abundant about the lake. 

 The one shown in the view is two years old, with horns still 

 in the velvet. 



Nos. 305, 300, 307. Tin: cone oe an extinct noT SPRING OB GEYSEB 

 upon the East Fork of the Yellowstone. A very curious 

 mammiform mound, of about forty feet in height, built up by 

 overlapping layers like the Cap of Liberty, on Gardiner's 

 River. The material is principally calcareous. No water 

 issues from the cone at the present time, and none of the 

 springs in the immediate vicinity are above the ordinary tem- 

 perature of brook-water. 



No. 308. Point of Hocks, on the Beaver Head River, on the line of the 

 Ogden and Helena overland-stage road. The rocks are a 

 carboniferous limestone, with a dip of twenty-three degrees 

 to the southeast. The Beaver Head cuts a narrow channel 

 through it, forming a small canon. 



No. 309. Beavkk Head ROOKS, at the month of the canon of the same 

 name, looking down the canon from above. The river forces 

 itself through a narrow gateway, witli vertical walls of dark 

 purplish basalt. The rocks on either side present the forms 

 of animals couchant, which, in the imagination of the Indians, 

 bear a resemblance to the beaver; hence the name, which is 

 applied to the river as well as the canon. 



No. 310. A HIGH BLUFF of LIMESTONE, upon the west bank of the river. 



No. 311. AN OUTBURST OF IGNEOUS MATERIAL, about live miles above 

 the entrance to the canon. It has assumed the nearly col- 

 umnar form of basalt, and is weathered into sharp pinnacles. 



No. 312. Camp at Fort Hall. (See No. 177.) 



No. 313. CAMP, twenty five miles south of Fort Hall, at Three Springs. 



No. 311. Soda Sprinos ox Bear River. At the Big Bend of Bear 

 Kiver are located the most interesting group of soda springs 

 known on the continent, occupying an area of about six square 

 miles. They are now few in number, and simply the rem- 

 nants of former greatness. On the opposite side of the 

 river, in the above view, are the steam-vents, to which Fre- 

 mont gave the name of Steamboat Springs, from the noise 

 they make like a low-pressure engine. Near by is a spring, 

 with an orifice brightly stained with a brilliant yellow coat- 

 ing of oxide of iron, from which the water is thrown up two 

 feet by a succession of impulses. 



No. 315. Hooper's Spring, of the same nature as the others in the 

 vicinity, but with a more copious escape of carbonic-acid gas, 

 and is a favorite with those seeking these health-giving 

 waters. 

 Nos. 31G, 317. Extinct soda spring basin. About three miles up 

 the valley of a small tributary of the Bear Kiver we come to 

 a most remarkable formation, consisting of the basins of old 

 springs long extinct. They are called the "petrifying 

 springs" by the settlers, from the abundance of calcareous 

 tufa which exists in the basins. Some of them are six feet 

 3p 



