The repeal by the enactment of the Revised Statutes of any act or part of any act under which any public institution or agency has been established shall not, unless such institution or agency has, prior to the effective date of the Revised Statutes, been abolished, affect the existence or continuance of such institution or agency, but the same shall be and continue in existence and be governed by the provisions of the Revised Statutes relating to and dealing therewith.