The night passed tranquilly by, and the next morning we proceeded as before. The apparently boundless prairie stretched out ahead, covered chiefly with long grass and here and there small bushes, which the buffalo and deer had allowed to struggle into existence. We advanced as rapidly as we could, steering by the compass, the scenery monotonous in the extreme, not a hill to be seen to break the wide circle of the horizon. One advantage was that we could not be taken by surprise, as we could see for a long distance any enemy which might approach us. We found numberless skeletons of buffaloes as well as their wallows, though we had not hitherto fallen in with any to which we might give chase. Mr Tidey and I were, as usual, leading ahead, taking care always to keep the train in view. Every now and then he stood up in his stirrups, in the hopes of seeing buffalo, but no buffalo appeared. We, however, after proceeding about a dozen miles from the river, saw away to the left, over a wide extent of ground, a number of small hillocks, which, had I been on foot, I might have mistaken for a range of hills in the distance. As it would not take us much out of our way, we rode towards them, when, as we approached we saw to our surprise that the top of every mound was occupied either by a small animal or a bird of an owl-like appearance, which appeared to be watching the rest of the community, employed in cropping the grass or running about in the immediate neighbourhood. As the little creatures perceived us, they rushed to their look-out station at the top of the mounds, while at the same moment a number of small heads popped up from holes in the ground, and we were saluted by a chorus of sharp, angry barks, while the animals shook their sides and wagged their tails at every bark, as if they would wag them off; then, having thus exhibited either their pleasure or fear--it was difficult to say which--uttering a fresh volley of barks, they rushed headlong into their burrows, wagging their tails to the last as they disappeared beneath the surface. The little owls, however, kept their posts and regarded us with their round eyes, utterly destitute of fear. I burst into a fit of laughter. "What are these funny creatures, I wonder?" I asked. "They are prairie dogs, and we have fallen in with a prairie dog town, though I little expected to find one so far north," answered the Dominie; "we should farther away find them covering acres of ground. It is said that an owl and a rattle-snake are invariably to be found in each hole, living in perfect amity with its inmates, but I suspect that although rattlesnakes are often to be found in the abodes of the small rodents, their object in going there is rather to devour the young prairie dogs than for any friendly purpose, though it is possible that the owls take up their residence among them for the sake of society."