From the point of view of physical development the Punans are among the finest of the peoples of Borneo. They resemble the Kenyahs more closely than any other tribe; that is to say, they are of very pale yellow colour, of short stature with long body and short legs, but otherwise well proportioned and very sturdily built with well-rounded limbs and large muscular development. Their heads are subbrachycephalic and inclining to be square; their features are more regular than those of most other tribes; their most distinctive physical characters are a relatively well-developed nasal bridge, nostrils directed so much forward that one seems to look right into their heads through them, and the slight greenish tinge and fine silky texture of their pale yellow skins. The greenish tinge may be noticed in all nomad Punans, and it is possible that the ruddier darker tint of the agricultural peoples is largely or wholly due to their greater exposure to the sun; for the Punan fears the broad daylight and rarely or never leaves the deep shade of the jungle.
In fineness of texture of the skin they surpass all the other tribes, and they seldom or never suffer from the disfiguring scaly affections of the skin so common among the others.
The Punans are more uniform as regards their physical characters than the other peoples; there are no distinctions of upper and lower social strata as among the other tribes, and thus the mixture of blood, which in the Kayan and Kenyah communities results from the adoption of war captives into the lower class, does not occur with them; and they present none of the wide diversities of type such as are common in the other tribes, especially between the upper and lower social classes. They correspond, in fact, to the relatively pure bred upper classes of the other tribes, and present the same high standard of physical development and vigour. It is not improbable that the severer conditions of their mode of life contribute to maintain this high standard.
The facial expression and the bodily attitudes of the Punans are also characteristic. When gathered in friendly talk with strangers, even those whom they have every reason to trust, they prefer to remain squatting on their heels, rather than to sit down on a mat; and the tension of their muscles, combined with the still alert watchfulness of their faces, conveys the impression that they are ready to leap up and flee away or to struggle for their lives at any moment. It is doubtless this alertness of facial expression and bodily attitude that gives the Punan something of the air of an untameable wild animal.
In spite of his distrustful expression the Punan is a likeable person, rich in good qualities and innocent of vices. He never slays or attacks men of other tribes wantonly; he never seeks or takes a head, for his customs do not demand it; and he never goes upon the warpath, except when occasionally he joins a war-party of some other tribe in order to facilitate the avenging of blood. But he will defend himself and his family pluckily, if he is attacked and has no choice of flight; and, if any one has killed one of his relatives, he will seek an opportunity of planting a poisoned dart in his body. In a case of this kind all the Punans of a large area will aid one another in obtaining certain information as to the identity of the offender; and any one of them will avenge the injury to his people, if the opportunity presents itself. They do not avenge themselves indiscriminately on all or any member of the offender's village or family, but they will postpone their vengeance for years, if the actual offender cannot be reached more promptly. It seems worth while to recount a particular instance of Punan vengeance. The Punans of the Tinjar basin were claimed by a Sebop chief; that is to say, the chief, Jangan by name, regarded them as under his protection and as therefore under an obligation to trade with him and his people only. But the Pokun people in the basin of a neighbouring river, the Balaga, a tributary of the Rejang, also claimed similar rights over the Punans of the district. One of these Pokuns, a man of the upper class, being angered by the adhesion of the Punans to the chief Jangan and by their refusal to trade with him, cut down one of them during an altercation in the jungle, leaving him dead on the spot. The companions of the murdered man retired, and all the Punans deserted the neighbourhood of the Pokuns. Some four years later the Pokun community migrated to the Tinjar; and shortly afterwards the murderer, thinking the whole matter was forgotten, set out through the jungle with a small party to seek to trade with another group of Punans. While on the march he was struck in the cheek (the favourite spot for the aim of the Punan marksman) by a poisoned dart from an unseen assailant and died within ten minutes. His companions, remembering the incident of four years before, suspected the Punans, but saw no trace of any.
The Punans confessed the act of vengeance to Jangan, and he communicated the facts to the Resident of the Baram district (C. H.), who happened to be in the neighbourhood at the time. The Pokuns wished to take vengeance on the Punans, and they would undoubtedly have turned out in force to hunt down and kill all the Punan men they could find, but that the Resident forbade them to take action, and enforced his command by threatening to burn down their houses in their absence. It is only fair to add that the Pokun chief recognised the justice of this prohibition and showed no resentment.
That the Punans will not allow the slaying of any one of their number to go unavenged on the person of the slayer is well known to all the people of the country, and this knowledge does much to give them immunity from attack.
The Punans cultivate no crops and have no domestic animals. They live entirely upon the wild produce of the jungle, vegetable and animal. Of the former, sago and a form of vegetable tallow found in the seed of a tree (SHOREA) are the most important. Animals of all kinds are eaten, and are secured principally by the aid of the blow-pipe and poisoned darts, in the use of which the Punans are very expert. The Punan dwelling is merely a rude low shelter of palm leaves, supported on sticks to form a sloping roof which keeps off the rain but very imperfectly, and leaves the interior open on every side.[174]
A Punan community consists generally of some twenty to thirty adult men and women, and, about the same number of children. One of the older men is recognised as the leader or chief. He has little formally defined authority, but rather the authority only that is naturally accorded to age and experience and to the fuller knowledge of the tribal history and traditions that comes with age. His sway is a very mild one; he dispenses no substantial punishments; public opinion and tradition seem to be the sole and sufficient sanctions of conduct among these Arcadian bands of gentle wary wanderers. Decisions as to the movements of the band are arrived at by open discussion, in which the leader will exercise an influence proportioned to his reputation for knowledge and judgment. He is mainly responsible for the reading of the omens, and has charge of the few and simple household gods — if that lofty title may be given to the wooden image of a crocodile and the bundle of charms attached to it which are always to be seen in a Punan camp.
If, in case of disagreement, one or more of the members of a band refuses to accept the judgment of the leader and of the majority, he, or they, will withdraw from the community together with wife and children, to form a band which, though in the main independent of the parent group, will usually remain in its near neighbourhood and maintain some intercourse. Fighting between Punans, whether of the same or of different communities, is very rare; the only instances known to us are a few in which Punans have been incited by men of other tribes to join in an attack on their fellows.