(18) The powers of either House shall not be affected by any vacancy therein, or any defect in the election or qualification of any member thereof. (19) Until otherwise provided by Irish Act, the holders of such Irish offices as may be named by Order of the Queen in Council before the appointed day, shall be entitled to be elected to and sit in either House, notwithstanding that they hold offices under the Crown, but on acceptance of any such office the seat of any such person in either House shall be vacated unless he has accepted the office in succession to some other of the said offices. _Transitory._ (20) The Lord-Lieutenant in Council may, before the appointed day, make regulations for the following purposes:-- (_a_) The making of a register of electors of councillors in time for the election of the first councillors, and with that object for the variation of the days relating to registration in the existing election laws, and for prescribing the duties of officers, and for making such adaptations of those laws as appear necessary or proper for duly making a register; (_b_) The summoning of the two Houses of the Legislature of Ireland, the issue of writs and any other things appearing to be necessary or proper for the election of members of the two Houses; (_c_) The election of a chairman (whether called Speaker, President, or by any other name) of each House, the quorum of each House, the communications between the two Houses, and such adaptation to the proceedings of the two Houses of the procedure of Parliament, as appears expedient for facilitating the conduct of business by those Houses on their first meeting; (_d_) The adaptation to the two Houses and the members thereof of any laws and customs relating to the House of Commons or the members thereof; (_e_) The deliberation and voting together of the two Houses in cases provided by this Act. (21) The regulations maybe altered by Irish Act, and also in so far as they concern the procedure of either House alone, by Standing Orders of that House, but shall, until altered, have effect as if enacted in this Act. NOTE I FROM THE 'MEMOIRS OF THE LATE LORD SELBORNE' (Part ii. pp. 261-263).