Section IX. Whenever a license shall be granted under this Act, the Collector shall be authorised to demand, in

IX. Whenever a license shall be granted under this Act, the Collector shall be authorised to demand, in consideration of the privilege granted, such fee, tax or duty as may, from time to time, be fixed, with the sanction of the Board of Customs, Salt and Opium; and such fee, tax or duty, may be made payable in advance, or at such period as may be settled by the Collector.