After following the Tongue River several days and coming out on that immense plain tributary to the Yellowstone, the trail turned to the northwest, gave us a short day’s drive to the Rosebud River, and after following it a few miles, bore off again on the same quarter. In our rear hung the mountains with their sentinel peaks, while in our front stretched the valley tributary to the Yellowstone, in extent, itself, an inland empire. The month was August, and, with the exception of cool nights, no complaint could be made, for that rarefied atmosphere was a tonic to man and beast, and there was pleasure in the primitive freshness of the country which rolled away on every hand. On leaving the Rosebud, two days’ travel brought us to the east fork of Sweet Grass, an insignificant stream, with a swift current and rocky crossings. In the first two hours after reaching it, we must have crossed it half a dozen times, following the grassy bottoms, which shifted from one bank to the other. When we were full forty miles distant from Frenchman’s Ford on the Yellowstone, the wagon, in crossing Sweet Grass, went down a sidling bank into the bottom of the creek, the left hind wheel collided with a boulder in the water, dishing it, and every spoke in the wheel snapped off at the shoulder in the felloe. McCann never noticed it, but poured the whip into the mules, and when he pulled out on the opposite bank left the felloe of his wheel in the creek behind. The herd was in the lead at the time, and when Honeyman overtook us and reported the accident, we threw the herd off to graze, and over half the outfit returned to the wagon.