The moment the sun rose above the horizon its influence could be seen and felt, and in an hour or two several cattle-teams had perished near us. First one ox would drop as though he were shot, and in a few minutes others would sink down, and almost before the owner could realize the condition of things, a part or the whole of his team would lie dead.
We are now approaching the foot-hills of the Rocky Mountains. The fertile plains through which we have been passing are being merged into rocky hills, the level parts being mostly gravelly barrens. The roads are hard and flinty, like pounded glass, which were making some of the cattle-teams and droves very lame and foot-sore. When one got so it could not walk, it was killed and skinned.