. 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. IV.] THE CRUISES OF THE <PORCUPINE.' 153 a bottom temperature of 5°- 2 C. We were thus in the warm area, and the dead-cold water of the cold area lying fifty or sixty miles off, with the bottom at a higher level,
. 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. IV.] THE CRUISES OF THE <PORCUPINE.' 153 a bottom temperature of 5°- 2 C. We were thus in the warm area, and the dead-cold water of the cold area lying fifty or sixty miles off, with the bottom at a higher level, was completely banked in. The bottom temperature here corresponded so closely with that of the same depth in the Ptockall Channel that apparently scarcely a drop of the Arctic in-. Fig. 26.—Zoroaster fulgens, Wyville Thomson. One-third the natural size. (No. TS.) draught makes its escape in this direction. The dredge here brought up half a ton of Atlantic ' globigerina ooze,' a load which tested its tackle and the donkey-engine to the utmost. The weight of the dredge itself with the weight attached was S cvvt., so that altogether the burden reached not. 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
