It is, however, partially regaining the river trade in consequence of the compulsory substitution of drawbridges for the stationary railway bridges.
The east side of the river (known as St Thomas's and Port Tennant) is approached from the west by a road carried over the North Dock Lock and the river by two girder drawbridges, each of which has a double line of roadway (on which tramways are laid), two footpaths and a line of railway.
The nucleus of the city occupies an island formed by the North and South Channels, two arms of the river Lee, and in former times no doubt merited its name, which signifies a swamp. In the beginning of the 18th century, indeed, this island was broken up into many parts connected by drawbridges, by numerous small channels navigable at high tide.
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