The Proclamation of NSW Governor Richard Bourke in 1835 implemented the legal principle of terra nullius in Australian law as the basis for British settlement
Batman's treaty
In 1835, John Batman, a grazier, negotiated an agreement with the Wurundjeri people to purchase land around Port Phillip, which is now Melbourne. The agreement was made in exchange for goods like blankets, tools, and food.
History
When John Batman, one of the pioneers in the founding of Victoria, first settled at Port Phillip, he made an attempt to buy the land from the Aboriginal people through a 'treaty'. New South Wales Governor, Sir Richard Bourke, effectively quashed the treaty with this Proclamation issued by the Colonial Office and sent to the Governor with Despatch 99 of 10 October 1835. Its publication in the Colony meant that from then, people found in possession of land without the authority of the government would be considered trespassers.
Although many people at the time also recognised that the Aboriginal occupants had rights in the lands (and this was confirmed in a House of Commons report on Aboriginal relations in 1837), the law followed and almost always applied the principles expressed in Bourke's proclamation. This would not change until the Australian High Court's decision in the Mabo Case in 1992.