sent the wonderful country we passed over, while each step of our progress was like each successive shifting of the kaleidoscope, presenting to our wondering gaze views which almost appalled us by their sublimity.
We passed over a region so full of cañons and precipices. Much of our journey was necessarily made on foot, our horses being led in single file, except my own noble "Dandy." He seemed to realize the difficulties of the route, and although permitted to run untethered, he followed me as closely and carefully as a well-trained dog.
Sometimes we found ourselves on the summit of a high peak, to ascend which we had to risk both life and limb, and particularly imperil the safety of our horses. Once we came to a steep declivity which neither man nor horse could descend. It was impossible to retrace our steps, as the sides of the peak were so steep our horses could not turn about without great danger of tumbling hundreds of feet. Asking the rest to wait a moment, I looked about and discovered a possible way out to our left, provided a huge rock which lay in the path could be removed. Bidding Tuttle "Look out," and uttering a few words of caution to Dandy, who seemed to comprehend our situation and say, "All right, don't mind me," I left him clinging to the soft and yielding soil of the mountain. I succeeded in dislodging the rock after some work, and sent it leaping down the rocky side leading to the valley, sometimes taking hundreds of feet at one plunge. The way being clear, a simple "Come on, Dandy," and we took the advance, followed by the rest. We were well repaid for our risk and trouble by the grandeur of the scenery that lay spread out beneath us.
I am making a rare collection of the fossils that the country is rich in—vegetable and mineral specimens. I hope you will approve of my plan of disposal of them: I intend to give them to the college at Ann Arbor. What would you think to pass through thousands of acres of petrified trees, some of which are twelve feet in diameter, with trunks and branches perfect! The fallen trunks of some as they lie on the ground are so natural in grain and color, the officers are sometimes deceived and sit down, thinking them but lately felled.
To return to my search for the steamboat. After struggling through the beds of deep cañons and climbing almost inaccessible peaks, we finally emerged into the valley of the Yellowstone. We
