sentences:  This was the last appointment of a South Australian judge by the Colonial Office.Boothby, in a series of judgments, adopted a pedantic approach to Imperial Law, holding a number of South Australian statutes invalid, including the Real Property Act 1857, which introduced the Torrens system of land registration in South Australia.Boothby also asserted that the Parliament of South Australia had not been validly constituted since the enactment of the Constitution Act 1855–56.