"My third plan seems to me the most feasible. You all saw a number of large, heavy boxes lowered into the hold before we sailed. I know you did, because you asked me what they contained and commented upon the large letter 'H' which was painted upon each box. These boxes contain the various parts of a hydro-aeroplane. I purpose assembling this upon the strip of beach described in Bowen's manuscript--the beach where he found the dead body of the apelike man--provided there is sufficient space above high water; otherwise we shall have to assemble it on deck and lower it over the side. After it is assembled, I shall carry tackle and ropes to the cliff-top, and then it will be comparatively simple to hoist the search-party and its supplies in safety. Or I can make a sufficient number of trips to land the entire party in the valley beyond the barrier; all will depend, of course, upon what my first reconnaissance reveals." That afternoon we steamed slowly along the face of Caprona's towering barrier. "You see now," remarked Billings as we craned our necks to scan the summit thousands of feet above us, "how futile it would have been to waste our time in working out details of a plan to surmount those." And he jerked his thumb toward the cliffs. "It would take weeks, possibly months, to construct a ladder to the top. I had no conception of their formidable height. Our mortar would not carry a line halfway to the crest of the lowest point. There is no use discussing any plan other than the hydro-aeroplane. We'll find the beach and get busy." Late the following morning the lookout announced that he could discern surf about a mile ahead; and as we approached, we all saw the line of breakers broken by a long sweep of rolling surf upon a narrow beach. The launch was lowered, and five of us made a landing, getting a good ducking in the ice-cold waters in the doing of it; but we were rewarded by the finding of the clean-picked bones of what might have been the skeleton of a high order of ape or a very low order of man, lying close to the base of the cliff. Billings was satisfied, as were the rest of us, that this was the beach mentioned by Bowen, and we further found that there was ample room to assemble the sea-plane.