Mowat's initial cabinet consist of only five members, conforming to the five offices prescribed by section 63 of the
British North America Act, 1867. The act had no specific mention of the position of the Premier, and there was no separate department or a budget for either a premier's office or cabinet office. Mowat took on the office of the
Attorney General, following a tradition set by many pre-confederation premiers. Of the six members of the outgoing Blake ministry, provincial secretary
Peter Gow departed for health reasons in addition to Blake and treasurer Mackenzie. Commissioner of Agriculture and Public Works
Archibald McKellar and Commissioner of Crown Lands
Richard Scott continued in their roles while
Adam Crooks assumed the role of Treasurer. The were joined by
Timothy Pardee as Provincial Secretary in addition to Mowat, who doubled duty as Attorney General for the entire duration of the ministry.
Expansion & creation of new department The government of Ontario, and correspondingly the cabinet, expanded from five to seven departments/members on a permanent basis over Oliver Mowat's 24-year premiership. The first structural change came in 1874, when a sixth department was created with
public works formally splitting off from agriculture. In 1876 upon the retirement of Rev. Dr.
Egerton Ryerson, the long time civil servant who served as Chief Superintendent of Schools for Upper Canada and then Ontario for a total of 32 years,
education was formally made a ministerial portfolio. The size of cabinet however remained at six for another 12 years. The education portfolio was initially held concurrently by Treasurer
Adam Crooks, who served as vice-chancellor of the University of Toronto prior to his election. While Crook was relieved of the treasury portfolio in 1877 to focus on education matters, subsequent treasurers instead concurrently held the agriculture portfolio, then the principal department responsible for a wide range of economic development matters. Cabinet was finally expanded to seven members in 1888 with the entrant
Charles Drury as Commissioner of Agriculture. Drury's son
Ernest would in a few decades head a ministry of a rival party, add three more departments in four short years, and break the Liberal-Conservative duopoly in Ontario politics while at it. An eighth member was added in 1890, when Mowat appointed Erskine Henry Bronson, an early advocate for industrial policy and active government involvement with industry, as a minister without portfolio.
Change to the ministry For a cabinet that held office for 24 years, it experienced remarkably few changes. Mowat led the Liberals through six general elections, securing six majority mandates. He made no changes to ministry before or after two of those elections. == List of ministers ==