The number of registered vessels belonging to the Port of Yarmouth is about six hundred, exclusive of fishing-smacks and other small craft. Ship-building is carried on to a great extent; and the artificers in the various departments of the building-yards are considered eminently skilful. There are several private bonding-warehouses, besides that on the South Denes belonging to the Custom-house. On the North Denes are the silk-mills of Messrs. Grout and Co.; and on Cobham Island are considerable salt-works for the use of the town and fisheries. At South Town, or Little Yarmouth, the banks of the Yare--besides the handsome houses by which they are lined on the south--are occupied by docks, timber-wharfs, and shipbuilding-yards, in which a large proportion of the vessels belonging to Yarmouth are constructed and fitted out for sea. [1] Mackarel is found in large shoals, especially on the French and English coasts. This fish enters the English Channel in April, and, as the summer advances, is found on the coasts of Cornwall, Sussex, Normandy, Picardy, &c., where the fishing is most considerable. [2] Herrings are also remarkable as appearing in immense shoals--many miles in extent, and several fathoms in depth. Their presence is easily discovered by the flights of sea-fowl which accompany them, by the unctuous matter with which the water is covered, and in the night by the brilliant phosphoric light which they emit. They are very plentiful about the Orkney Isles in June and July, in the German Ocean in September and October, and in the English Channel in November and December. [3] The London fishmongers are said to prefer the Lowestoff herrings to those cured at Yarmouth, although they are generally retailed under the name of "Yarmouth Herrings." [Illustration: YARMOUTH, WITH NELSON'S MONUMENT. (from the Lowestoft Road.)] YARMOUTH, WITH NELSON'S PILLAR, (FROM THE LOWESTOFT ROAD). "A fertile soil, a fruitful sea, And wealth amassed by Industry; And patriot virtues that sustain Their 'Meteor-flag' on land and main; A scene where Nelson's gallant name Is 'watch-word' to immortal fame: And here,--with grateful triumph crown'd,-- Imparts a charm to all around." YARMOUTH PILLAR.