Читать книгу The Book of Shells. Containing the Classes Mollusca, Conchifera, Cirrhipeda, Annulata, and Crustacea онлайн
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The Pearly Nautilus, (ssss1.)
The inhabitant of this singular shell had long been sought after with eagerness by naturalists, and it is only within these few years that its true nature has been ascertained. We are indebted for this knowledge to the researches of the late Mr. George Bennet, who, while engaged in a voyage among the Polynesian Islands, captured a specimen containing a living animal, which was brought to England, and is now deposited in the Museum of the Royal College of Surgeons in London.
The shell of the Nautilus, as may be seen by the engraving, is divided into numerous cells. The use of these cells to the animal we are now describing, was formerly not well understood, but they were supposed to be employed, by their inhabitant, for the purpose of rising or sinking in the Water at will. The body of this Cephalopod, it will be seen, only occupies the outer cell of its habitation, its increased size having rendered it too large to remain in that preceding it. If, as the animal deserted its smaller tenements, one after the other, they had been filled, up with solid matter, the shell would have become too cumbersome for its owner; so that we have here another proof of the providing care of the Creator. We shall describe, in Mr. Bennet’s own words, the capture of this interesting object.