was as dull as lead, and the hue of her yellow coat visibly darkened. I placed my foot in the stirrup to mount, when she staggered and fell flat on her side. Gaining her feet with an effort she stood by the fire with a drooping head. Whether she had been bitten by a snake or poisoned by some noxious plant or attacked by a sudden disorder, it was hard to say; but at all events her sickness was sufficiently ill-timed and unfortunate. I succeeded in a second attempt to mount her, and with a slow pace we moved forward on the trail of the Indians. It led us up a hill and over a dreary plain; and here, to our great mortification, the traces almost disappeared, for the ground was hard as adamant; and if its flinty surface had ever retained the print of a hoof, the marks had been washed away by the deluge of yesterday. An Indian village, in its disorderly march, is scattered over the prairie, often to the width of half a mile; so that its trail is nowhere clearly marked, and the task of following it is made doubly wearisome and difficult. By good fortune, many large ant-hills, a yard or more in diameter, were scattered over the plain, and these were frequently broken by the footprints of men and horses, and marked by traces of the lodge-poles. The succulent leaves of the prickly-pear, bruised from the same causes, also helped to guide us; so, inch by inch we moved along. Often we lost the trail altogether, and then found it again, but late in the afternoon we were totally at fault. We stood alone without a clew to guide us. The broken plain expanded for league after league around us, and in front the long dark ridge of mountains was stretching from north to south. Mount Laramie, a little on our right, towered high above the rest and from a dark valley just beyond one of its lower declivities, we discerned volumes of white smoke rising slowly.
