As Wallace further remarks, the orang never leaps or springs, seems to be in no haste, and yet makes his way through the forest almost as fast as a man can run on the ground below. His long, powerful arms are of the greatest use, enabling him to climb the highest trees with ease, to seize the fruits and young leaves from branches which would not bear his weight, and to collect the young leaves and boughs with which he forms his nest. This structure, which serves for his nocturnal refuge, is generally placed on some low, small tree, which stands only from twenty to fifty feet from the ground, probably because such a situation is warmer and less exposed to the wind. It is said that the orang makes a fresh layer for himself every night, but Wallace thinks this improbable, since, in this case, the deserted nest would be more frequently found; this author saw some such nests in the neighbourhood of the coal mines of Simunjon, but since many orangs must have been there every day, in the course of a year their forsaken layers would be very numerous. The Dyaks say that when the orang is wet he covers himself with pandanus-leaves or large ferns, and this has perhaps led to the belief that he builds himself a hut in the trees. The orang only leaves his layer when the sun is tolerably high, and the dew has dried off the leaves. He feeds throughout the middle of the day, but seldom returns two days running to the same tree. These animals seem to be much afraid of man. Wallace never saw two full-grown specimens together, but both male and female are often accompanied by their half-grown young, and three or four young animals may be seen going about together without their parents. The orang generally lives on fruit, but occasionally also on leaves, buds, and young shoots, as, for instance, on the bamboo. They are particularly fond of the durian, of which the smell is so offensive and the taste so good (_Durio zibethinus_). They destroy much more than they consume, and leave many fragments below the trees on which they have been feeding. I do not know whether orangs, as well as gorillas and chimpanzees, display any taste for carnivorous food. Huxley, who has collected much information about anthropoids which is not accessible to others, states that it is not known whether the orang destroys living animals.