“That night we anchored off a wild, desolate-looking coast, without a trace of human habitations being visible anywhere. However, we found a bay which, after careful soundings from the boats, proved to have sufficient depth of water to harbor the _Sea King_ snugly. Here we dropped anchor, and mighty glad we were to have struck a haven at last, I can tell you. “Next day the chief came to your father and told him that he thought he could clamp a metal collar round the break in the shaft and make it practically as good as new. To our astonishment, Professor Chadwick did not greet the news with any special enthusiasm. “‘You may as well take your time, Mr. MacDuffy,’ says he, ‘for it is probable that we shall remain here for quite a considerable period.’ “‘A considerable period, sir!’ exclaimed MacDuffy in some surprise. ‘Do you mean to explore yon forsaken land in the interests of science?’ “‘It seems to me, MacDuffy,’ answered Professor Chadwick (MacDuffy told me all this later), ‘that fate has brought me here. A very dear and a very near relative of mine vanished in this part of Yucatan many years ago. When we set out on this cruise I had an idea that perhaps I might undertake to go in search of him, or, at least, to discover some trace of his fate. That accounts for the aero-auto which, as you know, my son Jack and I invented, and also explains those chests which contain several more of our inventions suitable to such an expedition.’ “The Professor went on to say that now that he found himself off the very land which held the secret of Mr. Jesson’s fate, he didn’t mean to leave without making an attempt to solve it. From this determination he was not to be swayed, and the next day one of the boats set him and three of the crew, Abner Jennings, the boatswain; Jack Allworthy, the second engineer; and Ezra Kettle, a Maine man and a staunch seaman, ashore. We watched them from the _Sea King_ as they dragged the boat up on the beach and set off into the jungle, beyond which lay the misty blue outline of a range of huge hills. “Without the slightest warning, and just as they were about to plunge into the thick brush, the mangroves and scrub vegetation parted, and a score of savage-looking Indians rushed out. We saw your father and the others try to parley with them, and then, before we could even train a gun on the scene, the thing happened.” He paused for an instant, overcome by the recollection of that tragedy on the Yucatan beach. Immediately Jack jumped to his feet. “I’ve forgotten the ‘enemy’ outside. Hold on a minute,” he called as he dashed away to the deck. “The watch may be all right,” he continued, when he returned, “but there’s nothing like one’s own eyes. Go on, Ned.”