Archive image from page 53 of The depths of the sea. 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, depthsofseaaccou00tho Year: 1873 22 THE DEPTHS OF THE SEA. [chap. i. that it seemed probable that this gradual deposition of a line uniform organic sediment was almost universal. Then the question arose whether the animals which secreted these shells lived at the bottom,
Archive image from page 53 of The depths of the sea. 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, depthsofseaaccou00tho Year: 1873 22 THE DEPTHS OF THE SEA. [chap. i. that it seemed probable that this gradual deposition of a line uniform organic sediment was almost universal. Then the question arose whether the animals which secreted these shells lived at the bottom, or whether they floated in myriads on the surface and in the upper zones of the sea, their empty shells falling after death through the water in an incessant shower. Specimens of the soundings were sent to the eminent Fig. 2.— bulloides, D'Orbigny. Highly magnified. microscopists Professor Ehrenberg of Berlin and the late Professor Baily of West Point. On the moot question these two naturalists gave opposite opinions. Ehrenberg contended that the weight of evidence was in favour of their having lived at the bottom, while Baily thought it was not probable that the animals live at the depths where the shells are found, but that they inhabit the water near the
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