All Powers, Authorities, and Functions which under any Act of the Parliament of Great Britain, or of the Parliament of the United Kingdom of Great Britain and Ireland, or of the Legislature of Upper Canada, Lower Canada, Canada, Nova Scotia, or New Brunswick, are at the Union vested in or exerciseable by the respective Governors or Lieutenant Governors of those Provinces, with the Advice, or with the Advice and Consent, of the respective Executive Councils thereof, or in conjunction with those Councils, or with any Number of Members thereof, or by those Governors or Lieutenant Governors individually, shall, as far as the same continue in existence and capable of being exercised after the Union in relation to the Government of Canada, be vested in and exerciseable by the Governor General, with the Advice or with the Advice and Consent of or in conjunction with the Queen's Privy Council for Canada, or any Members thereof, or by the Governor General individually, as the Case requires, subject nevertheless (except with respect to such as exist under Acts of the Parliament of Great Britain or of the Parliament of the United Kingdom of Great Britain and Ireland) to be abolished or altered by the Parliament of Canada.