prairie a black speck appears against the sky, and it is plain that it moves. Well, I should think so!

In a second or two it becomes a horse and rider, rising and falling, rising and falling—sweeping toward us nearer and nearer—growing more and more distinct, more and more sharply defined—nearer and still nearer, and the flutter of the hoofs comes faintly to the ear—another instant a whoop and a hurrah from our upper deck, a wave of the rider’s hand, but no reply, and man and horse burst past our excited faces, and go winging away like a belated fragment of a storm!

So sudden is it all, and so like a flash of unreal fancy, that but for the flake of white foam left quivering and perishing on a mail-sack after the vision had flashed by and disappeared, we might have doubted whether we had seen any actual horse and man at all, maybe.

We rattled through Scott’s Bluffs Pass, by and by. It