An attempt to cross the mountains in the early part of June failed on account of the snow, which still covered the track. It was plain we should have no chance of finding either grass or underwood for our horses. To proceed, therefore, would be to hazard the loss of our horses; in which case, if we should be so fortunate as to escape with our lives, we should be obliged to abandon our papers and collections. It was accordingly decided not to venture farther; to deposit here all the baggage and provisions for which we had no immediate use, and to return to some spot where we might live by hunting till the snow should have melted, or a guide be procured to conduct us. We submitted, June 17, to the mortification of retracing our steps three days' march. On the 24th June, having been so fortunate as to engage three Indians to go with us to the falls of the Missouri for the compensation of two guns, we set out on our second attempt to cross the mountains. On reaching the place where we had left our baggage, we found our deposit perfectly safe. It required two hours to arrange our baggage, and prepare a hasty meal; after which the guides urged us to set off, as we had a long ride to make before we could reach a spot where there was grass for our horses. We mounted, and followed their steps; sometimes crossed abruptly steep hills, and then wound along their sides, near tremendous precipices, where, had our horses slipped, we should have been irrecoverably lost. Our route lay along the ridges which separate the waters of the Kooskooskee and Chopunnish, and above the heads of all the streams; so that we met no running water. Late in the evening, we reached a spot where we encamped near a good spring of water. It was on the steep side of a mountain, with no wood, and a fair southern aspect, from which the snow seemed to have disappeared for about ten days, and an abundant growth of young grass, like greensward, had sprung up. There was also a species of grass not unlike flag, with a broad succulent leaf, which is confined to the upper parts of the mountains. It is a favorite food with the horses; but it was then either covered with snow, or just making its appearance.