. 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). DEEP-SEA SOUNDING. 235 the level of the plateau a height of 16,206 feet (2,701 fathoms), a little more than the height of Mont Blanc above the sea-level. Accurate soundings are as yet much too distant to justify anything l
. 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). DEEP-SEA SOUNDING. 235 the level of the plateau a height of 16,206 feet (2,701 fathoms), a little more than the height of Mont Blanc above the sea-level. Accurate soundings are as yet much too distant to justify anything like a detailed contour map of the bed of the Atlantic, and such a sketch as the one here given can only be regarded as a first rough draft.° Nothing, however, can give a more erroneous or exaggerated conception of its outline than the ideal section in Captain Maury's ' Physical Geo- graphy of the Sea,' although it is in a certain sense correct. According to our present information, we must regard the Atlantic Ocean as covering a vast region o^wide shallow valleys and undulating plains, with a few groups of volcanic mountains, insignificant both in height and extent, when we consider the enormous area of the ocean bed. â rniHTr. , KEOM Till: HILLS ABOVE 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
