OKEGOX SHOET LIXE — OGDEX TO YELLOWSTOIsrE. 115 



Idaho covers an area of 83^888 square miles, divided principally 

 between tlie Rocky Mountain region and the Columbia Plateau, only 

 a small part, in the southeast corner of the State, lying in the Great 

 Basin. In elevation above sea level the State ranges from 735 feet, 

 at Lewiston, to 12,078 feet at the summit of Hyndman Peak. It is 

 drained mainly to the Columbia through Snake River and its tribu- 

 taries, and has an annual rainfall of about 17 inches, the range in a 

 single year at different places being from 6 to 38 inches. 



The industries of the State are chiefly agriculture, stock raising, 

 and mining. Hay, wheat, oats, and potatoes are the principal crops. 

 A large area is cultivated by irrigation. The mineral production 

 includes gold, silver, copper, lead, and zinc. The output of lead in 

 1913 was valued at $13,986,366, that of silver at $6,033,473. 



The population of Idaho in 1910 was 325,924. 



from We 



om 



canyon 



Weston, Idaho. crosses the railroad. Weston is an old Mormon village 

 Elevation 4,604 feet, qu the lake tciTace west of the station. Xorth of it 

 Sd^6?S^^ the raiboad ascends a slight grade, and the gullies cut 



in the lake deposit give the surface an uneven appear- 

 ance, but on the upper level it is very apparent that the plain is only 

 slightly dissected. In the distance to the northeast is a high-cut 

 bank of Bear River, but the river is not in view because in this part 

 of its course it has smik its channel in the easily eroded lake deposits 

 to a depth of 250 feet below the plain. 



from Utah to Montana 



moxHi tains 



Along 



Mormon settlement 



Dayton. .which is Dayton (see sheet 15b, p. 124), located at 



Elevation 4,745 feet, the mOU 



Population 418 * 



Ogden 71 mOes. ^^^J ^^^^l 



o 



mountains 

 lyton Cany 



^osed of very ancient sedimentary rocks 

 ward at a low angle. About half a mile 

 have been overridden by much younger I 

 showing that the mountains west of this 

 formed bv the Dilinff up of upturned broke 



rocks 



andy and hmy rocks 



mud in a fresh-water Tertiary 



lake. 



A^aUey. 



manv places around 



sev 



hundred feet hiffli. known a^ Battle Creek Butte. It is isolated in 



r^ 



