DREDGE • DICTIONARY ONE.COM • Definition of Dredge

... anticipation to the result of the first dredging of the Voyage. None of the ship's boats could be spared, so I hired one pulled by four negro slaves, who, although strong active fellows, had great objections to straining their backs at the oar, when the dredge was down. No sieve having been supplied, we were obliged to sift the contents of the dredge through our hands—a tedious and superficial mode of examination. Still some fine specimens of a curious flat sea-urchin (Encope marginata) and a few shells, encouraged us to persevere. Two days ...

— Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade • John MacGillivray