ng Range, and on the east merges into the Laramie Plains. The
drainage exit is through the Uintas, as noted, by means of the canyons
heading at Flaming Gorge. There are here opportunities for extensive
farming by irrigation. The only other chance for agriculture on the
river, except Wonsits Valley, Brown's Park, and a few minor places, is
below Black Canyon, in the stretches I have called the alluvial and the
canyon-valley divisions. In the latter short canyons separate extensive
valleys with wide alluvial bottoms capable of high cultivation, though
often subject to overflow. Almost anything will grow there. Vast groves
of cottonwood and mesquite exist. In the alluvial division, the last
stretch of the river, from the Gila down, cotton and sugar cane would
probably grow. This is the only division where the water of the river
can be extensively diverted. At the mouth of the Gila an old emigrant
road to California crossed, and another here in this Green River Valley.
A third route of travel was by way of Gunnison's Crossing; and a fourth,
though this was seldom traversed, was by the Crossing of the Fathers,
some thirty-five miles above the present Lee's Ferry. In Green River
Valley, Bonneville built his Fort Nonsense, and the region was for many
years the best known of any place beyond the mountains. The routes of
trappers and prospectors frequently followed aid native trails, which
crossed and recrossed the country in every direction, except where the
canyons of the Green and Colorado were approached, when few lines of
traverse were open across, and none along the course of the water.

On the headwaters of Green River lived the Crows, who called it the
Seedskedee Agie or Prairie Hen River. The Snakes and Utes living farther
down called it the Bitter-root. Fremont called it the Rio Verde of the
Spaniards, but apparently without good authority. It was also spoken
of as Spanish River, from the report that Spaniards occupied its lower
valleys. Colorado was also one of its names, and this is what it should
have remained. The commonest appellation was Green, supposed to have
been derived from a trapper of that name. Just when the term "Colorado"
was first applied to the lower river is not now known. It bore
several names, but finally Colorado took first place because of its
appropriateness. Both the walls and the water are usually red, though
the name is undoubtedly derived from the colour of the water. Green
River is frequentl