“What’s this? here’s velvet shark-skin,” intently gazing at Ahab’s hand, and feeling it. “Ah, now, had poor Pip but felt so kind a thing as this, perhaps he had ne’er been lost! This seems to me, sir, as a man-rope; something that weak souls may hold by. Oh, sir, let old Perth now come and rivet these two hands together; the black one with the white, for I will not let this go.”
I have been slightly uncertain of Ahab's race. Earlier, his forehead was referred to as black sand dunes. Here, because Pip is clearly black, Ahab must be white.