(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_ 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_) 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. (3) As regards the revenue and expenses of the postal and telegraph service, the Postmaster-General shall retain the revenue collected and defray the expenses incurred in Great Britain, and the Irish Post Office shall retain the revenue collected and defray the expenses incurred in Ireland, subject to the provisions of the Fourth Schedule to this Act; which schedule shall have full effect, but may be varied or added to by agreement between the Postmaster-General and the Irish Post Office. (4) _The sums payable by the Postmaster-General or Irish Post Office to the other of them in pursuance of this Act shall, if not paid out of the Post Office moneys, be paid from the Exchequer of the United Kingdom or of Ireland, as the case requires, to the other Exchequer_. (5) Sections forty-eight to fifty-two of the Telegraph Act 1863, and any enactment amending the same, shall apply to all telegraphic lines of the Irish Government in like manner as to the telegraphs of a company within the meaning of that Act. 21.--(1) As from _the appointed day_ there shall be transferred to the Irish Government the post office savings banks in Ireland and all such powers and duties of any department or officer in Great Britain as are connected with post office savings banks, trustee savings banks or friendly societies in Ireland, and the same may be regulated by Irish Act. (2) The Treasury shall publish not less than six months' previous notice of the transfer of savings banks.