The Duke’s Dock, between Salthouse and the King’s Dock, is a small dock belonging to the trustees of the late Duke of Bridgewater, for the use of his flats, with commodious warehouses. The several carriers by water have also convenient basins on the river, for the use of their barges, with quays for loading and unloading their goods; and the Mersey and Irwell navigation company have a small dock, called the Manchester Dock, for the flats employed in that extensive trade, and for the transport to this town of the productions of Cheshire, and the adjoining counties. The whole range of the docks, when the northern and southern additions are completed, will be two miles and eight hundred and twenty yards in length. Spacious as they are they are still considered inadequate to the increasing commerce of the port, and measures are in contemplation for their further extension. The sums expended in the formation of these docks amount to more than two millions sterling; for clearing them from the accumulation of silt brought in by the tide, a dredging-machine, worked by a steam-engine of ten-horse power, is in constant operation, by which fifty tons per hour are raised into barges, and deposited where it may be washed away by the current of the river. To this we are enabled to add, from an official paper, the following table, showing the area of water and the quantity of quay-space of these splendid docks:-- | Area of water in | Quay-Space in | Square Yards. | Lineal Yards. DRY BASINS. | | | | Prince’s Basin | 20,909 | 509 Seacombe Basin | 1,805 | 188 George’s Basin | 16,372 | 455 George’s Ferry Basin | 1,344 | 160 Old Dock Gut | 7,737 | 447 Queen’s Basin | 24,391 | 601 Brunswick Basin | 23,622 | 572 South Ferry Basin | 2,927 | 205 | | WET DOCKS. | | | | Prince’s Dock, with its two locks | 57,129 | 1613 George’s Dock, with its two passages | 26,793½ | 1001 Dry Dock as altered | 19,095 | 500 Salthouse Dock, with its passage | 23,025 | 759 King’s Dock, with its passage | 37,776 | 875 Queen’s Dock, with its two passages | 51,501½ | 1255 Half-tide Dock, with its passage | 13,185½ | 497 | | NEW NORTH WORKS.