These "stampedes" of animals are not uncommon on the Plains, and sometimes prove very embarrassing. A herd of mules, well stampeded, will run for miles, over every thing that opposes them, until they tire themselves thoroughly out. Had we been on the road, they would probably have stampeded our stage-horses--thundering up so behind us--and then there would have been a break-neck race by night, among the Rocky Mountains, that would have been rather exciting, not to say more. It is a favorite trick of the Indians, when they want to steal stock, to stampede them thus at night, and then run off the scattered animals. A large freight-train, that we subsequently heard of, had lost all its mules a few nights before by such a stampede, and been compelled to send back to the nearest settlement for others. Thence on to the North Platte, our route wound over and between foot-hills and ridges, where the general ascent was indeed perceptible, but never difficult. One by one we flanked the main ranges, and at old Fort Halleck, 8,000 feet above the sea, found a natural depression or cañon through the Mountains, in the absence of which a wagon-road there would be seemingly impossible. It really appeared, as if nature had cleft the range there expressly to accommodate the oncoming future; and we swung through it, and so down to the North Platte, at a steady trot. Here and there, in crossing the ridges, we caught exquisite glimpses of snowy peaks off to the west, and of the far-stretching Laramie Plains off to the east; but the country, as a whole, was barren and desolate. We reached the North Platte just at dusk, having made 104 miles in the last 24 hours. This seemed a good day's drive, considering we were crossing the Rocky Mountains; but it was not quite up to the regular schedule. We had hoped to get down into the Platte valley before dark, but daylight left us before we reached the station. We had caught long stretches of the valley, as we came over the ridges and down the bluffs; but darkness fell so suddenly, we saw little of it close at hand. Parts of it, we were told, are well adapted to farming, and nearly all of it could be made cultivable by proper irrigation; but it seemed too cold for anything but grass, and the more hardy cereals. No doubt it could be made available for grazing purposes, and the cañons of the neighboring Mountains would afford shelter and grass for winter. Antelope and elk were reported quite abundant still in the valley. We saw a herd of antelope feeding quietly, a mile away, soon after we struck the valley, and at the station they gave us elk-steaks for dinner--"fried," of course, as usual. Gold was reported in the Mountains beyond, but little had been done there yet in the way of mining. No doubt the Rocky Mountains are penetrated nearly everywhere by gold-bearing veins, and where these crop out, and water runs, "placer mines"--more or less lucrative--will be found. We found