Out of the trunk, the branches grow; out of them, the twigs. So, in productive subjects, grow the chapters.

The crotch alluded to on a previous page deserves independent mention. It is a notched stick of a peculiar form, some two feet in length, which is perpendicularly inserted into the starboard gunwale near the bow, for the purpose of furnishing a rest for the wooden extremity of the harpoons, whose other naked, barbed end slopingly projects from the prow. Thereby the weapon is instantly at hand to its hurler, who snatches it up as readily from its rest as a backwoodsman swings his rifle from the wall. It is customary to have two harpoons reposing in the crotch, respectively called the first and second irons.

But these two harpoons, each by its own cord, are both connected with the line; the object being this: to dart them both, if possible, one instantly after the other into the same whale; so that if, in the coming drag, one should draw out, the other may still retain a hold. It is a doubling of the chances. But it very often happens that owing to the instantaneous, violent, convulsive running of the whale upon receiving the first iron, it becomes impossible for the harpooneer, however lightning-like in his movements, to pitch the second iron into him. Nevertheless, as the second iron is already connected with the line, and the line is running, hence that weapon must, at all event............