The hippopotamus makes his daily rounds in regular beaten pathways;
and the trapper, knowing this peculiarity, turns it to advantage.
This is a common habit with many animals; and these "runways" are
easily detected by the matted leaves and grass and the broken twigs.
Over such a beaten track the harpoon-trap is suspended.

The harpoon used by the native African trappers somewhat resembles
a double-barbed arrowhead, and has a reflexed prong on the shaft
just behind the barbs,--a sort of combination between a spear and
a fish-hook. It is a terrible weapon; and, when once launched into
the flesh of its victim, its withdrawal is impossible, on account
of the reflexed barb. Any sharp steel shaft will answer the purpose
of the harpoon; it should be eight or ten inches in length, and
filed to a keen point. We will now construct the trap. The first
requisite is a straight section of the branch of some tree. This
should be about four inches in diameter, and four feet in length.
Into one end of this beam the harpoon should be firmly imbedded,
allowing the point to project about six inches. This beam should
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then be weighted with two large stones, attached firmly by a rope,
about eighteen inches above the harpoon. At about six inches from
the other end of the log a notch should be cut, having its flat
side uppermost, as shown plainly in our illustration. The implement
is now ready.

Select some favorably situated tree, whose branches extend over
the pathway chosen for the trap. By the aid of a rope secured to
the log, and thrown over the limb, the weighted beam may be drawn
up into the tree. While thus held by a person below, the trapper