The numerous harbours are chiefly artificial, usually located at the mouths of streams, the improvements consisting of two parallel piers extending into the lake and protecting a dredged channel.
The Pasig river has been dredged up to the Bridge of Spain to a depth of 18 ft.
Of safe dock frontage, the channel having been dredged for 6 m.
There is scarcely a county in England in which its remains have not been found in alluvial gravel or in caverns, and numbers of its teeth are dredged in the North Sea.
Two long jetties or breakwaters have now been constructed, about 350 acres of harbour area have been dredged to a depth of 30 ft., and two wharves of steel and concrete, one 600 ft.
At high water, except three tortuous and intricate channels which have recently been dredged to a sufficient depth to admit the passage of vessels, so as to obviate the long journey round the island of Ceylon which was previously necessary.
The depths of the Black Sea are lifeless, higher organic life not being known to exist below loo fathoms. Fossiliferous remains of Dreissena, Cardium and other molluscs have, however, been dredged up, which help to show that conditions formerly existed in the Black Sea similar to those that exist at the present day in the Caspian Sea.
The river, it was ascertained, was not kept sufficiently dredged; the re-export trade was noted as showing an especially serious decline, and the administration was found to suffer from decentralization.
Massee recommends that the shoots should be dredged with flowers of sulphur at intervals of ten days, while the disease continues to spread, a small quantity of quicklime in a finely powdered con FIG.
The river Main has been dredged so as to afford heavy barge traffic with the towns of the upper Main and with the Rhine, and cargo boats load and unload alongside its busy quays.
Its lower course from Lubeck to the sea has been dredged to a depth of 25 ft., permitting sea-going vessels to lie alongside the wharves and quays.
That these animals were widely distributed in former times is proved by their occurrence at the present day in palaeozoic fossiliferous strata both of the northern hemisphere and of Australia; and despite the fact that their remains have not been found in rocks of the Mesozoic or Kainozoic epochs, it was conceived to be possible that living specimens might be dredged from the sea-floor during the exploration of the ocean depths undertaken by the "Challenger" expedition.
The bay has long been recognized as one of the best on the Argentine coast, and when the channel is properly dredged, will admit steamers of 30 ft.
The city is traversed by two branches of the Mottlau, a small tributary of the Vistula, dredged to a depth of 15 ft., thus enabling large vessels to reach the wharves of the inner town.
It is one of the seaports of Georgia, the Federal government having dredged a channel in the inner harbour 21 ft.
It occurs also in the Atlantic off the north-west of Africa, and recently it has been dredged in deep water off the west of Ireland.
Finally, Glandiceps abyssicola (Spengelidae) was dredged during the "Challenger" expedition in the Atlantic Ocean off the coast of Africa at a depth of 2500 fathoms.
The British Museum and the Musee Cluny in Paris have fine collections of them, mainly dredged from the Thames and the Seine.
Oysters are dredged here and are shipped hence in large quantities.
A recently described species, Dolichorhynchus indicus, characterized by the great length of the praeoral lobe or snout, has been dredged in the Indian Ocean.
Basins were dredged to give depths of 15 and 2 4 ft.
On the south, near the only village, is the harbour, which has been dredged to a depth of 13 ft.