The dredgings of the " Vega " expedition in the Arctic Ocean disclosed an unexpected wealth of marine fauna, and those of L. [Please select]
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The United States Coast Survey has, in connection with an exploration of the Gulf Stream, been the first to establish a systematic series of dredgings at great depths, continued during several years. [Please select]
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Occasional expeditions to the coast or dredgings are the only links that attach him to nature; the scalpel and the microtome have replaced the collector's pins, and the magnifying glass gives place to the microscope. [Please select]
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