The prospect which opened before us on emerging from the rocky pass was wide and varied. Swelling hills and verdant wooded vales were seen on one hand, while a great plain stretched before us, extending from the banks of the river toward a chain of lofty mountains, whose summits were rendered indistinct in the haze of the distance. We crossed the stream, which we named East River, filling our flasks with water, and it was well we did so, for in continuing our journey, we found the soil become more arid and parched than we had expected; in fact we soon appeared surrounded by a desert. The boys were astonished at the altered appearance of the country, part of which had been explored when we met with the buffaloes. I reminded them of the difference of the season; that the expedition had been made directly after the rains, when vegetation had clothed with transient beauty this region, which, possessing no source of moisture itself, had become scathed and bare during the blazing heat of summer. Our march proceeded slowly, and many were the uncomplimentary remarks made on the "new country." It was "Arabia Petrea," groaned one. "Desert of Sahara," sighed another. "Fit abode for demons," muttered a third. "Subterranean volcanic fires are raging beneath our feet." "Patience, my good fellows!" cried I; "you are too easily discouraged. Look beyond the toilsome way to those grand mountains, whose spurs are already stretching forward to meet us. Who knows what pleasant surprises await us amid their steep declivities? I, for my part, expect to find water, fresh grass, trees, and a lovely resting-place." We were all glad to repose beneath the shade of the first over-hanging rock we came to, although, by pressing further upward, we might have attained to a pleasanter spot. Looking back toward the Gap, we marked the strange contrast of the smiling country bordering the river, and the dreary, monotonous plain we had traversed. After gazing on the distant scene, we produced our store of provisions, and were busily engaged, when Knips (our constant companion) suddenly began to snuff and smell about in a very ridiculous way; finally, with a shriek which we knew was expressive of pleasure, he set off at full speed, followed by all the dogs, up a sort of glen behind us. We left them to their own devices, being far too pleasantly engaged with our refreshments to care much what fancy the little rogue had got in his head. When hunger was somewhat appeased, Fritz once more cast his eyes over the expanse of plain before us, and after looking fixedly for a moment, exclaimed: "Is it possible that I see a party of horsemen riding at full gallop toward us! Can they be wild Arabs of the desert?" "Arabs, my boy! certainly not; but take the spyglass and make them out exactly. We shall have to be on our guard, whatever they are!"