. The depths of the sea. An account of the general results of the dredging cruises of SS. Porcupine and Lightning during the summers of 1868, 1869 and 1870, under the scientific direction of Dr. Carpenter, , J. Gwyn Jeffreys, , and Dr. Wyville Thomson, Lightning (Ship); Ocean; Marine animals; Deep-sea temperature; Deep-sea desposits; Porcupine (Ship). chap, vi.] DEEP-SEA DREDGING. 239 membra licet fractus, aniinum demisi, nee ab incepto desistere potui. Discant deliinc historiae naturalis scituli, rariora naturae absque iudefesso labore nee coniparari, nee iuste
. The depths of the sea. An account of the general results of the dredging cruises of SS. Porcupine and Lightning during the summers of 1868, 1869 and 1870, under the scientific direction of Dr. Carpenter, , J. Gwyn Jeffreys, , and Dr. Wyville Thomson, Lightning (Ship); Ocean; Marine animals; Deep-sea temperature; Deep-sea desposits; Porcupine (Ship). chap, vi.] DEEP-SEA DREDGING. 239 membra licet fractus, aniinum demisi, nee ab incepto desistere potui. Discant deliinc historiae naturalis scituli, rariora naturae absque iudefesso labore nee coniparari, nee iuste ;1 It does not appear, however, that Otho .Frederick Muller dredged much beyond thirty fathoms, and in his day the knowledge of marine animals was not sufficiently advanced to warrant any generalization as to their bathymetrical distri- bution. The instrument usually em- ployed in this and other northern countries for dredg- ing oysters and clams is a light frame of iron about five feet long by a foot or so in width at the mouth, with a scraper like a narrow hoe o;i one side, and a suspending apparatus of thin iron bars which meet in an iron ring for the attachment of the dredge rope on the other. From the frame is suspended a bag. Fig. 44.—Otho Frederick Muller* Dredge, 1750. about two feet in depth, of iron chain netting, or of wide-meshed hempen cord netting, or of a mixture of both. Naturalist dredgers at first used the oyster dredge, and all the different dredges now in use are modifications of it in one direction or in another; for in its simplicity it is not 1 Zoologia Danica. Sev Aniuialiviu Daniae et Norvegiae rariorum ac minvs notorvm Descriptiones et Historia. Avctore Othone Friderico Midler. Havniae, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Thomson, C. Wyville (Charles Wy
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmar, booksubjectocean
