78.—This Part of this Act shall apply to an arbitration under an Act as well as to an arbitration pursuant to an arbitration agreement, and section 74 of this Act shall have effect, in relation to an arbitration under an Act, as if, for the references to the arbitration agreement, there were substituted references to such of the provisions of the Act or of any order, scheme, rules, regulations or bye-laws made thereunder as relate to the arbitration.