The Barmaster, with the Assistance of his Deputies, shall every Year make out in Writing a List of not less than Forty-eight Owners or Maintainers of Mines situate within the Jurisdiction of the Barmote Courts, not being Members of the Grand Jury for the Time being, but being resident within the County of Derby, and fix the same upon the Door of the Court where the April Great Barmote Court is held, and shall afterwards copy such List into a Book, to be called the Jury Book, and to be kept by him, and One Week before any Small Barmote Court the Barmaster shall cause to be summoned Twenty-four Persons named in the said Book to attend at the Time and Place appointed for holding the said Small Barmote Court; and every such Summons shall be in the Form or to the Effect given in the Schedule hereto, and shall be served either personally on such Person, or by leaving it at his usual or last known Place of Abode; and no Person shall be summoned oftener than once in Three Years, unless there shall be a Deficiency in the Number of Jurors, so that a Jury could not be formed without summoning Jurors who have served within Three Years, but no Proceeding shall be held void on the Ground that a Person served on the Jury who was not liable to be summoned.