The Indian Councils Act 1861 was an Act of the Parliament of the United Kingdom that transformed the Viceroy of India's executive council into a cabinet run on the portfolio system. This cabinet had six "ordinary members" who each took charge of a separate department in Calcutta's government: home, revenue, military, law, finance, and (after 1874) public works. The military Commander-in-Chief sat in with the council as an extraordinary member. The Executive Council was enlarged by addition of 5th member as Jurist. The Viceroy was allowed, under the provisions of the Act, to overrule the council on affairs if he deemed it necessary - as was the case in 1879, during the tenure of Lord Lytton. The Viceroy was allowed to issue ordinances, when the Legislative Council is not in session, in emergency. This type of Ordinances would last for Six Months.