Section VII. And it is hereby enacted, that the consolidated and commuted Port duties above prescribed, when orde

VII. And it is hereby enacted, that the consolidated and commuted Port duties above prescribed, when ordered to be levied in any Port by the Governor General of India in Council shall be levied by the Officer appointed by the Government of the Presidency within which the Port is situate to give Port Clearances or other customary documents to vessels sailing from such Port, that is to say, by the Master Attendant, or by the Collector of Customs at such Port, as may be ordered by such Government, and if such duties be not paid upon demand, it shall be competent to such Officer to withhold from the vessel on account of which payment may be refused, any Port Clearance or other customary document required to be possessed by ships leaving such Port until the same shall be paid.