It seems to us probable that the greater part of the ancestors of the Ibans entered Borneo in this way. But there is reason to think that some of them had settled at an earlier date in this part of Borneo and rather farther southward on the Kapuas River. The BUGAUS, KANTUS, and DAUS, who dwell along the southern border of Sarawak, and some other Iban tribes in the northern basin of the Kapuas River, are probably descendants of these earlier immigrants of Proto-Malay stock. In most respects they closely resemble the other Iban tribes, but they are distinguished by some peculiarities of language and accent; their manners are gentler, their bearing less swaggering; they are less given to wandering, and they have little skill in the making and handling of boats. These are recognised by themselves and by other Ibans as belonging to the same people; but they are a little looked down upon by Ibans of the other tribes as any home-staying rural population is looked down upon by travelled cosmopolitans.

This conjectural history of the immigration of the Ibans explains the peculiar fact that, although all the Ibans of all parts are easily distinguishable from all the other peoples, and although they all recognise one another as belonging to the same people, they have no common name for the whole group. They commonly speak of KAMI MENOA (I.E. "we of this country") when they refer to their people as a whole; and the Kayan designation of them as IVAN (immigrant or wanderer) has been adopted by large numbers of them in recent years and modified into Iban, so that the expression KAMI IBAN is now frequently used by them.

The identification of the Iban with a Proto-Malay stock is justified by their language and physical characteristics. The former seems to be the language from which Malay has been formed under Arab influence and culture. It employs many words which are no longer current in Malay, but which, as is shown by Marsden's MALAY DICTIONARY, were in use among Sumatran Malays in the eighteenth century.

Since the Mohammedan populations which now are called Malay are of mixed origin, they present no very well-defined or uniform physical type. But of all Malays those of Sumatra and of the Peninsula are generally recognised as presenting the type in its greatest purity; and it is this type which the Ibans most closely reproduce. The near resemblance of facial type between the Malays and the Ibans is apt to be obscured for the casual visitor by the fact that the Iban puts little or no restraint upon his expressions and is constantly chattering, laughing, and smiling; whereas the Malay is taught from childhood to restrain his expressions and to preserve a severe and grave demeanour in the presence of strangers. But in private the Malay relaxes, and then the resemblance appears more clearly.

The principal features of the Iban's culture which distinguish it from that of the other tribes may be enumerated here. The Iban closely resembles the Kayan in his method of cultivating PADI, but he is even more careful and skilful, and generally secures a surplus. His house differs characteristically from those of the Kayan type, and resembles the long houses still inhabited by some Sumatran Malays, in being comparatively small, and in having a framework of many light poles rather than of heavy hardwood timbers, and a floor of split bamboo in place of huge planks. In methods of weaving and dyeing cloth and in the character of the cloths produced;[206] in the wearing of ornamental head-cloths; in the weaving of mats and baskets with the PANDANUS leaf and a large rush known as BUMBAN rather than with strips of split rattan; in their methods of trapping and netting fish; in the character of the sword and axe and shield as formerly used;[207] in the use of the fire-piston;[208] in musical instruments and methods; in the custom of earth burial; in the visiting and making of offerings at the graves of noted men in the hope of supernatural aid, — in all these respects the Iban culture differs from that of the Kayans, and closely resembles that of the Malays.

The Iban culture presents also certain features not common to other peoples of Borneo and not found among the Malays; and all or most are such as must have been exterminated among the Malays on their conversion to Islam, if they had formed part of their culture in their pre-Islamic period. Such are the religious beliefs and customs of the Ibans with the cult of the PETARA; the NGARONG; the rite with the clay crocodile for getting rid of farm pests (vol. ii. p. 88); the use in weaving of a number of designs of animal origin; the adornment of the edge of the ear with many brass rings; the lack of any strict avoidance of killing dogs.

Thirdly, of the features of Iban culture which are common to them and to the other tribes of Borneo, many seem to have been borrowed by them from their neighbours, and often in an incomplete or imperfect manner; such are the system of omenreading, the ritual slaughter of fowls and pigs, much of their dancing and tatuing, the PARANG ILANG and wooden shield, the feathered war-coat of skin, the KELURI or small bag-pipe, and the fashion of wearing their hair, — all these seem to have been borrowed from the Kayans; the woman's corset of brassbound hoops, from the Malohs; the mat worn posteriorly for sitting upon, from the Kenyahs.[209]

Besides the three great invasions of foreign blood and foreign culture, those borne by the Kayans, the Muruts, and the Ibans respectively, there have been numerous minor invasions on all sides. In the following paragraphs we make mention of those that seem to have been of most importance in modifying the population and the culture of Borneo.

In the south there are traces of Javanese culture with its Hindu elements among many of the tribes, but especially among the Land Dayaks who occupy the southern extremity of Sarawak. These cremate their dead; they set apart a separate round house for the trophies of human heads, and in this the bachelors are expected to pass the nights. The Malawis of South-East Borneo seem to be similar in many respects to the Land Dayaks of Sarawak. The Land Dayaks have a reputation in Upper Sarawak for quicker intelligence and more adaptability than the other tribes, and hence are in much request for services of the most various kinds. It is an interesting question whether this may be due to a dash of Hindu blood; the facial type and the more abundant growth of hair on the face would support an affirmative answer.

The Malohs are a well-marked tribe found on the Kalis and Mandai rivers, tributaries of the Kapuas River. Physically they are marked by exceptionally long narrow heads (index about 76). They speak a language very different from those of the central and northern parts of the island, but speak also the Iban language with a peculiar accent. The Malohs alone of all the peoples of Borneo eat the flesh of the crocodile. The most distinctive feature of their culture is their skill and industry in brass working. Malohs supply a large proportion of all the brass-ware to be found in the interior. This addiction to brass-working suggests that they represent an immigration from Java, which has long enjoyed a great reputation for its brass-ware and an extensive market throughout the islands.