The boys went down early in the afternoon. It was the time when the _mozos_ were returning from the day’s tarpon-fishing on the river, and they, with the _cargodores_, streamed to and fro on the platform. Pepe was there standing guard over Ken’s outfit. He had lost his fame among his old associates, and for long had been an outsider. Here he was in charge of a pile of fine guns, fishing-tackle, baggage, and supplies--a collection representing a fortune to him and his simple class. He had been trusted with it. It was under his eye. All his old associates passed by to see him there. That was a great time for Pepe. He looked bright, alert, and supremely happy. It would have fared ill with thieves or loafers who would have made themselves free with any of the articles under his watchful eye. The train pulled out of Tampico at five o’clock, and Hal’s “We’re off!” was expressive. The railroad lay along the river-bank, and the broad Panuco was rippling with the incoming tide. If Ken and Hal had not already found George to be invaluable as a companion in this strange country they would have discovered it then. For George could translate Pepe’s talk, and explain much that otherwise would have been dark to the brothers. Wild ducks dotted the green surface, and spurts showed where playful _ravalo_ were breaking water. Great green-backed tarpon rolled their silver sides against the little waves. White cranes and blue herons stood like statues upon the reedy bars. Low down over the opposite bank of the river a long line of wild geese winged its way toward a shimmering lagoon. And against the gold and crimson of the sunset sky a flight of wild fowl stood out in bold black relief. The train crossed the Tamesi River and began to draw away from the Panuco. On the right, wide marshes, gleaming purple in the darkening light, led the eye far beyond to endless pale lagoons. Birds of many kinds skimmed the weedy flats. George pointed out a flock of aigrets, the beautiful wild fowl with the priceless plumes. Then there was a string of pink flamingoes, tall, grotesque, wading along with waddling stride, feeding with heads under water. “Great!” exclaimed Ken Ward. “It’s all so different from Arizona,” said Hal. At Tamos, twelve miles out of Tampico, the train entered the jungle. Thereafter the boys could see nothing but the impenetrable green walls that lined the track. At dusk the train reached a station called Las Palmas, and then began to ascend the first step of the mountain. The ascent was steep, and, when it was accomplished, Ken looked down and decided that step of the mountain was between two and three thousand feet high. The moon was in its first quarter, and Ken, studying this tropical moon, found it large, radiant, and a wonderful green-gold. It shed a soft luminous glow down upon the sleeping, tangled web of jungle. It was new and strange to Ken, so vastly different from barren desert or iron-ribbed cañon, and it thrilled him with nameless charm.