And be it enacted, That from and after the passing of this Act (with the Exception herein-after specified), no Person shall be capable to be appointed a Principal Clerk of the Bills, except a Principal Clerk of Session, and every Person to be hereafter appointed to the said Office, shall personally discharge the Duties thereof, in Manner provided by the said Act, passed in the Fiftieth Year of the Reign of His, late Majesty, and shall in respect of such Appointment be entitled to the Salary herein-after provided, but to no Fees or other Emoluments whatsoever: Provided always, that the Two Principal Clerks of Session, who shall be appointed Principal Clerks of the Bills, pursuant to this Act, shall not belong to the same Division of the Court at the same Time, but one shall be appointed from each Division.