Verrill, A. Hyatt (Alpheus Hyatt), 1871-1954 · New York, R. M. McBride & co. · leaf 206
eference uponrough or rocky spots, where the dredge or trawlwould be torn and injured. The purpose of the dredge is to scrape up thesand or mud with the animals it contains, and inorder that it may dig well into the material theedges of the frame are made sharp and flaring asshown in the cut. The…
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