. 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. Porcupine (Ship); Lightning (Ship); Ocean; Marine animals; Deep-sea temperature; Marine sediments. 88 THE DEPTHS OF THE SEA. cliyurous crustacean which had not previously been taken in the British seas. Here the Miller-Casella thermometers were tried for the first time and compared with those of the ordinary construction. The minimum record
. 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. Porcupine (Ship); Lightning (Ship); Ocean; Marine animals; Deep-sea temperature; Marine sediments. 88 THE DEPTHS OF THE SEA. cliyurous crustacean which had not previously been taken in the British seas. Here the Miller-Casella thermometers were tried for the first time and compared with those of the ordinary construction. The minimum recorded by one of the former was 5°-2 C, while that recorded by one of the best ordinary instruments of the Hydro- graphic Office pattern was 1"-^ C As this difference of 2" C. was almost exactly what the results of the ex- periment previously made had indicated as the effect. Via. H. — Geri/du tiidciis, Kroyer. Ydiing. Twice tlic iintuviil size. (No. 7.) of a pressure of 1 ton on the square inch, which is about equal to the pressure of a column of sea-water of 800 fathoms, this close coincidence gave great confidence in the practical working of the protected instrument, a confidence which all subsequent ex- perience has fully justified. Mr. Gwyn Jeffreys and his companions next pro- posed to examine the sea-bed between Galway and Porcupine Bank a shoal discovered during one of. 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, Macmillan and co.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmar, booksubjectocean
