These retreats tended to extinguish the hopes cherished by the friends of the natives, and rooted the conviction more firmly in the colonial mind, that all efforts to tame them were unavailing. All the plans laid down for their expulsion, had been tried, and had proved to be impracticable. They still recurred to their usual haunts, and made up for their diminished numbers by their improved method, cunning, and audacity. Having committed depredations, they retired, with their plunder, to the districts reserved for their occupation, and whither it was unlawful to follow them, except for sworn offences. The Governor determined to try a movement, _en masse_, and by the united force of the entire population, to drive the Austral tribes within Tasman's Peninsula--a territory, joined to the main land by a neck, about one quarter of a mile in breadth. The success of this plan could never have been considered very promising. The Governor expressed his doubt respecting the result, while it was in progress; and there is no reason to question that, in putting it to the test, he was moved by the earnest entreaties of the colonists, and a conviction that nothing should be left untried, to preserve the people committed to his charge. On the 7th September, 1830, the intention of the Governor was officially announced. Referring to the outrages of the natives, he asserted that their expulsion was impossible, but by a simultaneous effort. He called on every settler, whether residing in the town or country, to place himself under the direction of a magistrate, whoever he might prefer; that the whole military and police strength, combined with such assistance, might capture the hostile tribes, or permanently expel them. The solemnity of the engagement, no less than the preservation of the lives and property of the whole community, would require a serious and resolute co-operation. On former occasions, he observed such campaigns had been greatly perverted, and transformed into amusement and recreation. The Governor gave no promise of recompense, and insisted that the effort, however meritorious, was simply the duty of all; but with his accustomed tact, he chose this moment to reward, with large grants of land, those persons already distinguished for enterprise and success, and to distribute indulgences to prisoners who had been actively employed in the service. Mr. Batman, who had devoted twelve months to the pursuit of the blacks, obtained 2,000 acres of land. Mr. Howel, of the Clyde, whose losses had been great, but who was represented as displaying an untiring spirit of humanity, was consoled with 1,000 acres. The aboriginal Sydney guides, and Black Bill, a Tasmanian, received each 100 acres.