And be it further enacted, That every Cashier and Receiver General of Excise in Scotland henceforth to be appointed shall discharge the Duties of the said Office in Person, subject to such Rules and Regulations as shall be established by the said Lord High Treasurer or Commissioners of His Majesty's Treasury, or any Three or more of them for the Time being for that Purpose, which they are hereby authorized and required to direct to be observed for the due Discharge of the Duties of the said Office ; and no Cashier or Receiver General of Excise henceforth to be appointed shall enjoy or receive, for or in respect of such Appointment, a higher Salary than One thousand Pounds per Annum; and every such Cashier or Receiver General shall give such Security for the due Discharge of the Duties of his Office in Person as the said Lord High Treasurer or Commissioners of the Treasury, or any Three or more of them, shall think fit to order and direct in that Behalf.