The man who lay on a bed of grass in one corner of the wretched adobe hut turned a reproachful look on the little professor.
"You are wrong," he asserted, in a voice that seemed to have gained strength for the moment. "I am not deranged—I am not deceived by an hallucination. With my eyes I have seen the wonderful Silver Palace—yes, more than that, I have stood within the palace and beheld the marvelous treasures which it contains."
The professor turned away to hide the look on his face, but Frank Merriwell, deeply interested, bent over the unfortunate man, asking:
"By what route can this wonderful palace be reached?"
"There is no route. Between us and the Silver Palace lie waterless deserts, great mountains, and, at last, a yawning chasm, miles in width, miles in depth. This chasm extends entirely round the broad plateau on which the wonderful palace stands like a dazzling dream. The bottom of the chasm is hidden by mists which assume fantastic forms, and whirl and sway and dash forward and backward, like battling armies. Indians fear the place; Mexicans hold it in superstitious horror. It is said that these mist-like forms are the ghosts of warriors dead and gone, a wonderful people who built the Silver Palace in the days of Cortez—built it where the Spaniard could not reach and despoil it."
Despite his doubts, the professor was listening with strong interest to this remarkable tale.
The fourth person in the hut was the Dutch boy, Hans Dunnerwust, who sat on the ground, his back against the wall, his jaw dropped and his eyes bulging. Occasionally, as he listened to the words of the dying man, he would mutter:
"Chimminy Gristmas!"
For several weeks Frank Merriwell, our hero, Hans, his chum, and Professor Scotch, his guardian, had been exploring the country around the city of Mendoza, Mexico. They had come to Mexico after having numerous adventures in our own country, as related in "Frank Merriwell Out West," a former volume of this series.
Only a short hour before they had run across the sufferer, whose head seemed so full of the things he had seen at what he called the Silver Palace. They had found him almost dead in a hut at the edge of a sandy plain, suffering great pain and calling loudly for aid. They had done what they could, and then he had begun to talk, as related above.