That's it.

Good old dog, then!" He lifted Bruff out and passed him up to Mark, who leaned over and listened as in the midst of a deep silence Mr Gregory slapped the side of a case.
"Now, then, where are you ?" he shouted.
There was no reply; and he shouted again and again, but without effect.
"At it you go, my lads," he said, drawing in his breath with a hiss.
"He must be in here; the dog says so." "Ay, ay, sir!" rose in chorus, and the task was resumed with fresh energy, and but for the careful management of the two officers there must have been a fresh mishap, the sailors being rather reckless and ready to loosen packages whose removal would have caused the sides of the heaps to come crumbling down in a cargo avalanche, to cause disaster as well as delay.
Another hour had passed and Bruff had been had down four more times, always after his fashion to show where the man they sought must be, but still there was no result to their task, and Mark felt a blank sensation of despair troubling him, for he could see that the first-mate was beginning to lose faith in the dog's instinct, though there had for long enough past been nothing to prove that he was wrong, not so much as a sigh being heard.
"I think we'd better have the dog down again," said Mr Gregory at last, his voice sounding strange from deep among the cargo.

"Stop a moment, my lads.

Silence, and pass me a lanthorn." At the sound of his voice Bruff uttered a whine, and Mark had to hold tight by his collar to keep him back.
Directly after, as the lad looked down he could see the mate tap once more upon a case in the curious-looking hollow.
"Now, then," he shouted, "where are you ?" There was a silence that was painful in its intensity, and then plainly heard came a faint groan.
"Hooray, my lads! he's here, and alive yet," cried the mate, and the men set up a hearty cheer.

"Steady, steady! He's close here.