Then suddenly the screw of the cruiser began to rotate, the water was crickled, the shark disappeared in a wrinkled confusion, and a torrent of foam rushed across the crystalline clearness that had swallowed up Elstead. "What's the idee?" said one A.B. to another. "We're going to lay off about a couple of miles, 'fear he should hit us when he comes up," said his mate. The ship steamed slowly to her new position. Aboard her almost everyone who was unoccupied remained watching the breathing swell into which the sphere had sunk. For the next half-hour it is doubtful if a word was spoken that did not bear directly or indirectly on Elstead. The December sun was now high in the sky, and the heat very considerable. "He'll be cold enough down there," said Weybridge. "They say that below a certain depth sea water's always just about freezing." "Where'll he come up?" asked Steevens. "I've lost my bearings." "That's the spot," said the commander, who prided himself on his omniscience. He extended a precise finger south-eastward. "And this, I reckon, is pretty nearly the moment," he said. "He's been thirty-five minutes." "How long does it take to reach the bottom of the ocean?" asked Steevens. "For a depth of five miles, and reckoning--as we did--an acceleration of two feet per second, both ways, is just about three-quarters of a minute." "Then he's overdue," said Weybridge. "Pretty nearly," said the commander. "I suppose it takes a few minutes for that cord of his to wind in." "I forgot that," said Weybridge, evidently relieved. And then began the suspense. A minute slowly dragged itself out, and no sphere shot out of the water. Another followed, and nothing broke the low oily swell. The sailors explained to one another that little point about the winding-in of the cord. The rigging was dotted with expectant faces. "Come up, Elstead!" called one hairy-chested salt impatiently, and the others caught it up, and shouted as though they were waiting for the curtain of a theatre to rise. The commander glanced irritably at them. "Of course, if the acceleration's less than two," he said, "he'll be all the longer. We aren't absolutely certain that was the proper figure. I'm no slavish believer in calculations." Steevens agreed concisely. No one on the quarter-deck spoke for a couple of minutes. Then Steevens' watchcase clicked. When, twenty-one minutes after, the sun reached the zenith, they were still waiting for the globe to reappear, and not a man aboard had dared to whisper that hope was dead. It was Weybridge who first gave expression to that realisation. He spoke while the sound of eight bells still hung in the air. "I always distrusted that window," he said quite suddenly to Steevens. "Good God!" said Steevens; "you don't think--?" "Well!" said Weybridge, and left the rest to his imagination.