The sheriffs principal, in any return of jurors made by them to a court, shall take the names in regular order, beginning at the top of the lists in the said jury books, in each of the sheriff court districts, as required ; and as often as any juror shall be returned to them, they shall mark or cause to be marked, in the said general jury book of their respective sheriff court districts the date when any such juror shall have been returned to serve; and in any such return they shall commence with the name immediately after the last in the preceding return, without regard to the court to which the return was last made, and taking the subsequent names in the order in which they shall have been entered, as herein directed, and so to the end of the lists respectively.