. 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. CHAP. 1.] INTRODUCTION. much corroded. Shortly afterwards the cable gave Avay in a depth of 1,200 fathoms, at a distance of one mile from the spot where the electrical tests showed that the cable had been previously broken. With these 40 miles
. 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. CHAP. 1.] INTRODUCTION. much corroded. Shortly afterwards the cable gave Avay in a depth of 1,200 fathoms, at a distance of one mile from the spot where the electrical tests showed that the cable had been previously broken. With these 40 miles of cable much coral and many marine animals were brought up, but it did not apj^ear that their presence liad injured the cable, for they were attached to the sound as well as to the corroded portions. On his return, Mr. Eleeming Jenkin sent s})ecimens of the animals which he had himself taken from the cable, noting the respective depths, to Pro- fessor Allman, , for determination. Dr. Allman gives a list of fifteen animal forms, including the ova of a cephalopod, found at depths of from 70 to 1,200. Fig. i.—CaryophylUa borealis, Fleming. Twice the natural size. No. fathoms. On other portions of the cable species of Grantia, Plumularia, Gorgonia, Caryophyllia, Alcy- onium, Cellepora, Betepora, Escham, Salicomaria, Ascidia, Lima, and Serptdcf. I observe from Professor. 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
