31 



ble thickness with the disintegrated silica deposited from the 

 flowing hot springs, so that in walking over it, it seems like 

 treading on the broken fragments of washed shells along the. 

 sea-shore. 



No. 275. A hot spring cone, entirely surrounded by the clearcold water 

 of the lake. In the center is the spring Of boiling water. One 

 may stand on it, extend his rod into the lake, catch the 

 tront, and cook them in the boiling spring, without re- 

 moving them from the hook. It is six feet in diameter at the 

 water's edge. 



Xo. 27(5. A GROUP OP hot spuing BASINS in the same vicinity. Their 

 great beauty lies almost wholly in the exquisite color they 

 possess, and of which no pen can convey any adequate idea. 



Xo. 277. MUD PUFFS. A thick boiling and bubbling mass of reddish 

 mud. These mud springs lie all about the camp, (Xos. 268- 

 272,) and their constant thnd is heard night and day, as thehot 

 steam struggles np from below, and exploding scatters the 

 mud in every direction. 



Xos. 278-282. YELLOWSTONE LAKE, a bird's-eye panoramic view, in five- 

 sections, taken from the high hills on the east side of the 

 southeast arm, near where the Upper Yellowstone empties 

 into the lake. The first view looks south, and shows the high 

 range that separates the waters of the Yellowstone from those 

 of Wind River. The second view includes the Upper Yel- 

 lowstone and the bay in which it empties. The third and 

 fourth are looking east and northeast iy across the southern 

 arms of the lake and Promontory Point to the distant moun- 

 tains on the farther side. No. 5 or the last of the series, is a 

 view south, past Promontory Point, into the large open space 

 of the lake, where it hides away into the horizon. 



Xos. 2b3, 284. Mounts Doane and Stevenson. The first, 10,118 feet 



above the sea, and the other but a tew feet lower, situated 

 some six or eighl miles east of the southeast arm of the lake. 

 They are the fragments of the rim of an immense crater. 



Xos. 285, 2SG, 287. Views looking up the southeast Aim, with 

 Promontory Point in the center, the waters of the bay ex- 

 tending far away into the distance. In the foreground on 

 the left the basalts are shown, especially in Xo. 287, where 

 detached masses of breccia extend out into the lake. 



Xo. 2S8. EARTHQUAKE Gamp, near Steamy Point, east side of Yellow- 

 stone Lake, so named from several slight shocks of earth- 

 quake, which were experienced at this place on the night of 

 the 19th of August, 1871. 



Xo. 289. MART'S Bay, east shore of Yellowstone Lake, showing one of 

 the numerous beautiful curves (as perfect as if drawn by the 

 hand of art) of the shore-line. 



Xo. 290. STEAMY. Point, east shore of the lake, near its outlet. Xu- 

 merous steam vents abound here, which are in operation con- 

 stantly, sending oft' steam with a noise like that of the escape- 

 pipe of a steamboat. 



Xo. 291. Pelican's Poost, near Steamy Point. A detached mass of 

 the hot spring deposit, which has been cut oil' from the main- 

 land by the action of the waves, and left in the lake one hun- 

 dred feet from the shore. 



Xo. 292. Small southwestern arm op the lake, at the foot of 

 Flat Mountain. 



