The drop-trap is a log of wood, weighted with stones, and having at one end an iron spike, which is sometimes poisoned. The path which the animal takes is watched, a conveniently overhanging branch is selected, and from that branch the cruel spear is suspended, by a catch or trigger, exactly over the centre of the path. There is no difficulty in finding the precise centre of the path, owing to the peculiar gait of the animal, which has already been described. One end of the trigger supports the spear, and to the other is attached a rope, which is brought across the path in such a way that when touched it relieves the spear, which is driven deeply into the animal's back. If well hung, the spear-blade divides the spine, and the wounded animal falls on the spot, but, even if it should miss a vital part, the poison soon does its fatal work.
In consequence of the continual persecution to which it is subjected, the hippopotamus becomes exceedingly wary, and, huge, clumsy, and blundering as it looks, is clever enough to detect either pitfall or drop-trap that have not been contrived with especial care. An old and experienced hippopotamus becomes so wary that he will be suspicious even of a bent twig, and, rather than venture across it, he will leave the path, force for himself a roundabout passage, and return to the path beyond the object that alarmed him.
Mr. T. Baines, to whose sketches I am indebted for the illustration, told me that the hippopotamus is possessed of much more intellect than might be expected from a creature of so dull, clumsy, and unpromising aspect. Apathetic it generally is, and, as long as it is left unmolested, does not care to molest even the human beings that intrude upon its repose.
It likes to lie in the shade of the reeds and rushes, and may be seen floating in the water, with only the nostrils, the eyes, and the ears above the surface, these organs being set in a line along the head, evidently for the purpose of allowing the whole body to be hidden under water while the three most important senses are capable of acting.
A canoe-man who knows the habits of the hippopotamus will fearlessly take his fragile vessel through a herd of the animals, knowing that, if he only avoids contact with them, they will not interfere with him. The only danger is, that a hippopotamus may rise under the canoe, and strike itself against the boat, in which case the animal is rather apt to consider the intruding object as an enemy, and to attack it, sometimes crushing the canoe between its teeth, and mostly upsetting it, and throwing the crew into the water. In such a case, the men always dive at once to the bottom of the river, and hold on to some weed or rock as long as they can exist without breathing. The reason for this proceeding is, that the hippopotamus always looks for its enemy upon the surface of the water, and, if the men were to swim to shore, they would be caught and killed before they had swum many strokes. But, as it sees nothing but the damaged canoe, its short-lived anger vanishes, and it sinks again into the river, leaving the men at liberty to regain and repair their vessel.
There is one passage in the description of the Behemoth which requires a few words of explanation: "He moveth his tail like a cedar" (v. 17).
Several commentators have imagined that this expression shows that the Behemoth must have been an animal which had a very long and powerful tail, and have adduced the passage as a proof that the crocodile was the animal that was signified by the Behemoth. Others, again, have shifted the position of the tail, and, by rendering it as the "proboscis," have identified the Behemoth with the elephant. There is, however, no necessity for straining the interpretation, the passage evidently signifying that the member in question is stiff and inflexible as the cedar-stem.