It was at Carthoris' suggestion that we landed our prisoners under guard upon a couple of the larger islands, and then towed the ships of the First Born to the shaft, where we managed to wedge a number of them securely in the interior of the great well. Then we turned on the buoyance rays in the balance of them and let them rise by themselves to further block the passage to Omean as they came into contact with the vessels already lodged there.
We now felt that it would be some time at least before the returning First Born could reach the surface of Omean, and that we would have ample opportunity to make for the subterranean passages which lead to Issus. One of the first steps I took was to hasten personally with a good-sized force to the island of the submarine, which I took without resistance on the part of the small guard there.
I found the submarine in its pool, and at once placed a strong guard upon it and the island, where I remained to wait the coming of Carthoris and the others.
Among the prisoners was Yersted, commander of the submarine. He recognized me from the three trips that I had taken with him during my captivity among the First Born.