(4) All legal proceedings in Ireland, which are instituted at the instance of or against the Treasury or Commissioners of Customs, or any of their officers, or relate to the election of members to serve in Parliament, or touch any matter within the powers of the Irish Legislature, or touch any matter affected by a law which the Irish Legislature have not power to repeal or alter, shall, if so required by any party to such proceedings, be heard and determined before the Exchequer judges or (except where the case requires to be determined by two judges) before one of them, and in any such legal proceeding an appeal shall, if any party so requires, lie from any Court of first instance in Ireland to the Exchequer judges, and the decision of the Exchequer judges shall be subject to appeal to Her Majesty the Queen in Council and not to any other tribunal. (5) If it is made to appear to an Exchequer judge that any decree or judgment in any such proceeding as aforesaid has not been duly enforced by the sheriff or other officer whose duty it is to enforce the same, such judge shall appoint some officer whose duty it shall be to enforce the judgment or decree; and for that purpose such officer and all persons employed by him shall be entitled to the same privileges, immunities, and powers as are by law conferred on a sheriff and his officers. (6) The Exchequer judges, when not engaged in hearing and determining such legal proceedings as above in this section mentioned, shall perform such of the duties ordinarily performed by other judges of the Supreme Court in Ireland as may be assigned by Her Majesty the Queen in Council. (7) All sums recovered by the Treasury or the Commissioners of Customs or any of their officers, or recovered under any Act relating to duties of Customs, shall, notwithstanding anything in any other Act, be paid to such public account as the Treasury or the Commissioners direct. _Post Office, Postal Telegraphs, and Savings Banks._ [Sidenote: Transfer of post office and postal telegraphs.] =20.=--(1) As from the _appointed day_ the postal and telegraph service in Ireland shall be transferred to the Irish Government, and may be regulated by Irish Act, except as in this Act mentioned and except as regards matters relating-- (_a_) To such conditions of the transmission or delivery of postal packets and telegrams as are incidental to the duties on postage; or (_b_) To foreign mails or submarine telegraphs or through lines in connection therewith; or (_c_) To any other postal or telegraph business in connection with places out of the United Kingdom. (2) The administration of or incidental to the said excepted matters shall, save as may be otherwise arranged with the Irish Post Office, remain with the Postmaster-General.