. 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). CHAT. V.] DEEP-SEA SOUNDING. 225 the vanes. The revolving axis communicates its motion to the indices on the dial-plate c, which are so adjusted that the index on the right-hand dial passes through a division for every fat
. 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). CHAT. V.] DEEP-SEA SOUNDING. 225 the vanes. The revolving axis communicates its motion to the indices on the dial-plate c, which are so adjusted that the index on the right-hand dial passes through a division for every fathom of F. Fig. 43.—' Massey's ' Sounding Machine, vertical descent, whether quick or slow, and makes an entire revolution for 15 fathoms, while the left- hand index passes through a division on the circle for 15 fathoms, and makes an entire revolution during Q. 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 Wyville), Sir, 1830-1882; Carpenter, William Benjamin, 1813-1885; Jeffreys, John Gwyn, 1809-1885. London ; New York : Macmillan and co.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmar, booksubjectocean
