The peccary (Tayassu angulatum), the armadillo (Tatu novemcinctum), the civet-cat (Bassariscus astutus flavus), the Mexican bighorn (Ovis mexicanus) and the jaguar are Mexican species found in southern or south-western Texas.
Labiatus), skunk (Mephitis, Spilogale and Conepatus), marten, several species of opossum (including a pigmy species of the Tres Marias islands), sloth, two species of ant-bear (Myrmecophaga tetradactylus and Cyclothurus didactylus), armadillo (Dasypus novemcinctus), a small arboreal porcupine (Synetheres mexicanus), the kinkajou (Cercoleptes caudivolvulus), three species of deer - the white-tailed Cariacus toltecus, the little black-faced brocket, Coassus rufinus, which is also found in Brazil, and the Sonora deer (Odocoileus couesi) - the Mexican bighorn (Ovis mexicanus) of Chihuahua, at least two species of hare (Lepus calotis and L.
Flanking strata are even better exhibited in the Bighorn Mountains, the front range of northern Wyoming, crescentic in outline and convex to the northeast, like the Laramie Range, but much higher; here heavy sheets of limestone arch far up towards the range crest, and are deeply notched where consequent streams have cut down their gorges.
Different stages of cirque development, with accompanying transformation of ioountain shape, are finely illustrated in several ranges around the headwaters of the Arkansas river in central Colorado, where the highest summit of the Ro~k~ Mountains is found (Mt Massive, 14,424 ft., in the Sawatch range); and perhaps even better in the Bighorn range of Wyoming.
Its eastern part is drained north-eastward through a gorge that separates the Laramie and Rattlesnake (Front) ranges by the North Platte river to the Missouri-Mississippi; its western part, where the basin floor is much dissected, often assuming a bad-land expression, is drained southward by the Green river, through a deep canyon in the Uinta Ran~e to the Colorado river and then to the Pacific. The Bighorn basin has a moderately dissected floor, drained north-eastward by Bighorn river through a deep canyon in the range of the same name to the Missouri.
THE BIGHORN MOUNTAINS OF WYOMING
Bighorn limestone 300 ft.
In the mountains of British Columbia are the bighorn or Rocky Mountain sheep and the Rocky Mountain goat, while the saddleback and white mountain sheep have recently been discovered in the northern Cordillera.
These features are well developed about the Bighorn Mountains,.
Local glaciation has modified the higher levels of the Bighorn Mountains, giving glacial cirques, alpine peaks and many mountain lakes and waterfalls.
Much of the state is drained by branches of the Missouri river, the most important being the Yellowstone, Bighorn and Powder rivers flowing N., and the Cheyenne and North Platte flowing E.
Forest growth in Wyoming is limited to the highest mountain ranges, the most important forests being in the Black Hills region in the N.E., on the lower slopes of the Bighorn Mountains, and in the Rocky Mountain ranges of the N.W.
White fir is found above the foot hill zone, and heavy growths of cottonwood along the streams in the Bighorn region.
In the lower Bighorn Valley, summer temperatures rise to 95° or toe, but at heights of 6000 to 7000 ft.
At Basin, in the Bighorn Valley, the mean winter temperature is 16°, the summer mean 72°.
Natural gas in quantity has been found in the Douglas field and in Bighorn county.
The irrigable area of Wyoming is estimated at about 6,200,000 acres, lying chiefly in Bighorn, Sheridan and Johnson counties in the N.W.
Of the state, and in Laramie, Albany and Carbon counties in the S.E., though there are large tracts around the headwaters of the Bighorn river, in Fremont county in the west-central part, along the North Platte river and its tributaries in Converse county in the central part, and along the Green river and its tributaries in Sweetwater and Uinta counties in the S.
The principal undertaking of the Federal government is the Shoshone project in Bighorn county.
M., chiefly in the Bighorn Mountains in the N., and the Medicine Bow Mountains in the S.E.
To Cody and Kirby in the Bighorn basin, Wyoming; while another branch from Alliance, Nebraska, extends to the iron mines at Guernsey.
Of the trail demanded the construction of posts, of which the most important were Fort Reno, on the Powder river, and Fort Phil Kearny in the Bighorn Mountains.
Of the Bighorn Mountains was to be reserved as an Indian hunting ground and no white men were to settle on it without the consent of the Indians.
Of the Territory, as has been already said, had been set apart (1868) as a hunting ground for the Sioux Indians, but the rumour of the discovery of gold in the Black Hills and the Bighorn Mountains in1874-1875caused a rush to the region which the military seemed powerless to prevent.
Custer (q.v.) and his command were killed in 1876 on the Little Bighorn in Montana, the Indians were thoroughly subdued and confined to reservations.
Mathes, " Glacial Sculpture of Bighorn Mountains, Wyoming," pp. 167-190 of Pt.