Victoria semi-elected Legislative Councils on the New South Wales model. The Act also reduced the property requirement for voting. Government officials were to be responsible to the governor rather than the Legislative Council, so the imperial legislation provided for limited representative government rather than responsible government. The gold rushes of the 1850s Although gold had been found in Australia as early as 1823 by surveyor James McBrien, a gold rush began when Edward Hargraves widely publicised his discovery of gold near Bathurst, New South Wales, in February 1851. Further discoveries were made later that year in Victoria, where the richest gold fields were found. By British law all minerals belonged to the Crown, and the governors of New South Wales and Victoria quickly introduced laws aimed at avoiding the disorder associated with the California gold rush of 1848. Both colonies introduced a gold mining licence with a monthly fee, the revenue being used to offset the cost of providing infrastructure, administration and policing of the gold fields. As the size of allowable claims was small (6.1 metres square), and much of the gold was near the surface, the licensing system favoured small prospectors over large enterprises. The gold rush initially caused some economic disruption including wage and price inflation and labour shortages as male workers moved to the goldfields. In 1852, the male population of South Australia fell by three per cent and that of Tasmania by 17 per cent. Immigrants from the United Kingdom, continental Europe, the United States and China also poured into Victoria and New South Wales. The Australian population increased from 430,000 in 1851 to 1,170,000 in 1861. Victoria became the most populous colony and Melbourne the largest city. Chinese migration was a particular concern for colonial officials. There were 20,000 Chinese miners on the Victorian goldfields by 1855 and 13,000 on the New South Wales diggings. There was a widespread belief that they represented a danger to white Australian living standards and morality, and colonial governments responded by imposing a range of taxes, charges and restrictions on Chinese migrants and residents. Anti-Chinese riots erupted on the Victorian goldfields in 1856 and in New South Wales in 1860. According to Stuart Macintyre, "The goldfields were the migrant reception centres of the nineteenth century, the crucibles of nationalism and xenophobia[.]” The Eureka stockade As more men moved to the gold fields and the quantity of easily-accessible gold