Te Rauparaha, having slipped from the snare of his enemies, plunged into the long grass which surrounded the pa, and, in the semi-darkness, succeeded in eluding his pursuers, eventually reaching his settlement at Ohau, weary, angry, and almost naked. Bitterly disappointed at the result of his mission, and deeply enraged at the treatment he had received, he in his wrath cursed the Rangitane and Muaupoko peoples, and, calling his tribe around him, he charged his followers to make it the one special mission of their lives "to kill them from the dawn of day till the evening." This doctrine of extermination was not preached to unwilling ears; and from that day the fixed policy of the Ngati-Toa tribe was to sweep the Muaupoko and Rangitane from their ancestral lands. In the reprisals which followed as the result of Rauparaha's vow of eternal vengeance, the former tribe seems to have suffered most; and there is little room for doubt that they would have been ultimately uprooted and effaced from amongst the tribes of New Zealand, but for the kindly offices of that dark-skinned humanitarian, Te Whatanui, who, years afterwards, took them under his protecting mantle, and declared, in the now historic phrase, that "nothing would reach them but the rain from heaven."
The Rangitane people were more fortunately situated, having the impassable forests of the Manawatu and its inaccessible mountain fastnesses to protect them. But they by no means escaped the bitterness of persecution, as bands of Ngati-Toa were constantly roaming their country in search of some one to kill and devour. The constant absence of these parties convinced Rauparaha that the small band of men whom he had with him was by no means sufficient for the magnitude of the task which his ambitious mind had conceived, and so he determined upon doing two things. The first was to strengthen his position by conquering the island of Kapiti, which was still in the possession of a section of the Ngati-Apa people; the second, once again to despatch ambassadors to the north, to persuade some of his former allies to join him in mastering a district which promised a rich supply of guns and ammunition. As a preliminary to the former scheme, he extended his frontier as far as Otaki, from which point he could the better watch the movements of the islanders and sweep down upon them at a favourable moment. But the intervals in which there was lack of vigilance were few and far between, and consequently the first series of attacks failed signally. The defenders were strongly posted and incessantly watchful; so Rauparaha, seeing that the frontal attack, however well delivered, would not avail, decided upon a stratagem which, judged by its success, must have been admirably planned.
His device was to lull the defenders of the island into a false sense of security by apparently withdrawing all his forces from Otaki for the purpose of some larger movement in the north, at the same time leaving a small band of well-tried men, whose duty it was to make a dash for the island and seize it before its inhabitants had recovered from their surprise. He accordingly marshalled his forces one morning, and, with an amount of ostentatious display which was calculated to attract the attention of the Ngati-Apa spies, he marched away to the Manawatu at the head of his warriors. The Ngati-Apa saw this movement, but did not understand it. Believing that the absence of Te Rauparaha meant a period of respite, they withdrew their sentries and gave themselves up to rejoicing. This was precisely what the Ngati-Toa chief had hoped for and calculated upon. He also had the satisfaction of knowing that the most critical part of his scheme was in safe hands. His uncle, Te Pehi Kupe, who was left in charge of the attacking party, was a tried and grim veteran, and, true to the trust imposed upon him, he came out of his concealment just before dawn on the morning after Te Rauparaha had left. Silently the intrepid little band launched their canoes, and as silently they paddled across the intervening water, reaching the island at the break of day. They found the inhabitants still sleeping, and unconscious of any danger until the shouts of their assailants and the cries of the wounded warned them that some desperate work was on hand. Not many of them stayed to fight, and those who were not killed in the first onslaught scrambled into their canoes and made for the mainland, thus ingloriously leaving the last independent stronghold of the Ngati-Apa in the hands of the invaders.
It has been charged to the discredit of Te Rauparaha, that, in planning this attack upon Kapiti, he cherished a guilty hope that Te Pehi might fall in the assault, and by his death rid him of a powerful rival in the councils of the tribe. But, while his critics have never been slow to attribute to him the grossest treachery towards his enemies and infidelity to his friends, there is absolutely no evidence that on this occasion he meditated a crime, such as sacred history imputes to the King of Israel when he placed Uriah the Hittite in the forefront of the battle. Te Pehi was a great chief. He was Te Rauparaha's senior in years and his superior in birth. His prowess in battle was known far and wide, and the circumstances under which he afterwards emulated the example of Hongi by visiting England, and like him, subsequently procuring for his tribe, guns and ammunition at Sydney, stamp him as a man of strong initiative and individuality. But he did not possess the political genius with which his nephew was endowed; he lacked the organising power, the tact, and the gift of inspiring others with his own enthusiasm. While Te Pehi might lead a charge with brilliancy, Te Rauparaha could often gain more by diplomacy than he by force of arms; and these statesmanlike qualities gave the younger chief an influence with the tribe which Te Pehi did not and never could possess. Indeed, the tragedy associated with his death at Kaiapoi, in 1828, is sufficient to convince us that he was strangely lacking in conciliation and tact. So far as can be learned, there is nothing to lead us to suppose that Te Pehi ever questioned his nephew's superiority in the diplomatic department of his tribal office; on the contrary, he seems to have cheerfully accepted a secondary position, and loyally aided Te Rauparaha in all his projects. Under these circumstances, it is somewhat difficult to imagine what Te Rauparaha was to gain by sacrificing so brave an ally. Moreover, the intense grief which he manifested when Te Pehi was killed at Kaiapoi, and the signal vengeance which he took upon the Ngai-Tahu tribe for their act of treachery, render the suspicion of foul play on his part utterly improbable. In view of these considerations he may fairly be exonerated from any criminal intent towards Te Pehi. It is clear that the seizure of Kapiti was but an essential move in his policy of conquest, and that the manner of its seizure was but a cleverly designed piece of strategy, certainly not unattended by risk, but affording very reasonable chances of success.
The capture of this natural fortress did not result in its immediate occupation, for Te Rauparaha still had abundance of work to do on the mainland before he could regard the power of the enemy as broken and the conquest of his new home complete. In pursuance of his policy of extermination, he had been interspersing his larger movements with repeated raids upon Rangitane and Muaupoko, in which he invariably made them feel the sting of his revenge. Finding that these attacks were becoming more frequent and more vigorous, the chiefs of the latter tribe conceived a plan by which they hoped to elude the persistency of their implacable pursuers. Hitherto their pas had been built on the shores of the picturesque lakes, around which they had lived since their advent into the district, centuries before. But they now decided to abandon these strongholds, which were exposed to every raid of the enemy, and build their dwellings in the centre of Lakes Horowhenua and Papaitonga. At the cost of an amazing amount of industry and toil, they constructed artificial islands upon the beds of these lakes at their deepest parts, and upon these mounds they built a miniature Maori Venice. The construction of these islands was most ingenious, and desperate indeed must have been the straits to which Muaupoko were driven before they imposed upon themselves so laborious a task.
Proceeding to the bush, their first operation was to cut down a number of saplings, which were pointed and then driven into the soft mud, closely enclosing in rectangular form sufficient space on which to place