Some considering touch of humanity was in him; for at times like these, he usually abstained from patrolling the quarter-deck; because to his wearied mates, seeking repose within six inches of his ivory heel, such would have been the reverberating crack and din of that bony step, that their dreams would have been on the crunching teeth of sharks. But once, the mood was on him too deep for common regardings; and as with heavy, lumber-like pace he was measuring the ship from taffrail to mainmast, Stubb, the old second mate, came up from below, with a certain unassured, deprecating humorousness, hinted that if Captain Ahab was pleased to walk the planks, then, no one could say nay; but there might be some way of muffling the noise; hinting something indistinctly and hesitatingly about a globe of tow, and the insertion into it, of the ivory heel.