![]() ![]() It has long been useful in works of marine and hydraulic engineering, and has been brought in modern times to a state of high perfection. ![]() Hydraulic Engineering Dredging is the name given by engineers to the process of excavating materials under water, raising them to the surface and depositing them in barges, or delivering them through a shoot, a longitudinal conveyor, or pipes, to the place where it is desired to deposit them. In the following account the operations of dredging in this sense are discussed (I) as involved in hydraulic engineering, (2) in connexion with the work of the naturalist in marine biology. ![]() (2) Connected with " drag," or at least derived from the same root, dredge or dredger is a mechanical appliance for collecting together and drawing to the surface (" dredging ") objects and material from the beds of rivers or the bottom of the sea. dragee), and in mining is applied to ore of a mixed value. " Dredge " is also a local term for a mixed crop of oats and barley sown together (" maslin " or " meslin," cf. The word in this sense is obsolete, but survives in " dredger," a box with a perforated top used for sprinkling such a sugar-mixture, flour or other powdered substance. rpayrfflara, sweetmeats, it means a confection of sugar formed with seeds, bits of spice or medicinal agents. The word " dredge " is used in two senses. ![]()
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