Provincial governments assumed that their future growth depended upon farming, and so devised policies to encourage settlement on the land. Auckland province offered new immigrants 40 acres (16 hectares) for each adult over the age of 18, and 20 acres (8 hectares) for children. This map, issued in London, shows the land already under cultivation (in red), the land open for selection by immigrants being offered free grants (in green), and land acquired by the Crown but not yet surveyed for settlement (in yellow). The untinted areas are Māori land.