These features are well developed about the Bighorn Mountains,.
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.
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.
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.
These bighorns are characterized by the absence of face-glands, and the comparatively smooth front surface of the horns of the old rams, which are thus very unlike the strongly wrinkled horns of the argali group. The typical bighorn is the khaki-coloured and white-rumped Rocky Mountain animal; but on the Stickin river there is a nearly black race, with the usual white areas (0.
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.
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.
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.