The bottom was of that tough, slimy sort of clay-rock that is found in many places about our coasts, and was dotted here and there with lumps of harder rock and clumps of curious weed. The two divers turned at the bottom of the ladder, walked a few steps, and looked up at the great hole in the Nicobar's side. Seen from here it was a fearful chasm, laying open hold, orlop, and lower deck.

Hewitt turned away, and began walking about. Once or twice he stood and looked thoughtfully at the ground he stood on, which was fairly flat. He turned over with his foot a whitish, clean-looking stone about as large as a loaf. Then he wandered on slowly, once or twice stopping to examine the rock beneath him, and presently stooped to look at another stone nearly as large as the other, weedy on one side only, standing on the edge of a cavity in the claystone. He pushed the stone into the hole, which it filled, and then he stood up.

Merrick put his helmet against Hewitt's, and shouted—

"Satisfied now? Seen enough of the bottom?"

"In a moment!" Hewitt shouted back; and he straightway began striding out in the direction of the ship. Arrived at the bows, he turned back to the point he started from, striding off again from there to the white stone he had kicked over, and from there to the vessel's side again. Merrick watched him in intense amazement, and hurried, as well as he might, after the light of Hewitt's lamp. Arrived for the second time at the bows of the ship, Hewitt turned and made his way along the side to the ladder, and forthwith ascended, followed by Merrick. There was no halt at the deck this time, and the two made there way up and up into the lighter water above, and so to the world of air.

On the tug, as the men were unscrewing them from there waterproof prisons, Merrick asked Hewitt—

"Will you try the 'lotion' now?"

"No," Hewitt replied, "I won't go quite so far as that. But I will have a little whisky, if you've any in the cabin. And give me a pencil and a piece of paper."

These things were brought, and on the paper Martin Hewitt immediately wrote a few figures and kept it in his hand.