Complex sentence: On November 14,1864, he was appointed to the judiciary as Vice-Chancellor of the Court of Chancery of Upper Canada, which became part of the Supreme Court of Ontario in 1881 a position he held until he was appointed premier on October 25,1872.
Split into simpler sentences: On November 14,1864, he was appointed to the judiciary as Vice-Chancellor of the Court of Chancery of Upper Canada, which became part of the Supreme Court of Ontario in 1881. He held this position until he was appointed premier on October 25,1872.