His motions plainly denoted his extreme exhaustion. In most land animals there are certain valves or flood-gates in many of their veins, whereby when wounded, the blood is in some degree at least instantly shut off in certain directions. Not so with the whale; one of whose peculiarities it is to have an entire non-valvular structure of the blood-vessels, so that when pierced even by so small a point as a harpoon, a deadly drain is at once begun upon his whole arterial system; and when this is heightened by the extraordinary pressure of water at a great distance below the surface, his life may be said to pour from him in incessant streams. Yet so vast is the quantity of blood in him, and so distant and numerous its interior fountains, that he will keep thus bleeding and bleeding for a considerable period; even as in a drought a river will flow, whose source is in the well-springs of far-off and undiscernible hills. Even now, when the boats pulled upon this whale, and perilously drew over his swaying flukes, and the lances were darted into him, they were followed by steady jets from the new made wound, which kept continually playing, while the natural spout-hole in his head was only at intervals, however rapid, sending its affrighted moisture into the air. From this last vent no blood yet came, because no vital part of him had thus far been struck. His life, as they significantly call it, was untouched.