Coal duty (London). Returns of the total quantities of coal brought by sea, rail, or canal, within the limits of the coal duty radius, in each of the years from 1861 to 1866, both inclusive; showing the gross amount of duty collected in each year, separating the 9 d. from the 4 d. duty, the remission of duty allowed on coal sent beyond the duty limits, and the net proceeds after deducting such drawback and expenses, &c [electronic resource].