 | 1806 - 604 páginas
...others again the shell has not only become thick, but the animal has receded from its first inclosure, and has formed a second three inches up the tube, and afterwards a third two inches further on, and has made the sides thicker and thicker, to diminish the canal in proportion to the diminution of... | |
 | Royal Society (Great Britain) - 1832 - 564 páginas
...Mr. Griffiths's possession, the animal appears to have receded from its first inclosure, and to have formed a second, three inches up the tube, and afterwards a third, two inches further on. These facts show that the Teredo gigantea, when arrived at its full growth, closes up its shell, and... | |
 | Royal Society (Great Britain) - 1832 - 550 páginas
...Mr. Griffiths's possession, the animal appears to have receded from its first inclosure, and to have formed a second, three inches up the tube, and afterwards a third, two niches further on. These facts show that the Teredo gigantea, when arrived at its full growth, closes... | |
 | 1842 - 530 páginas
...the shell had not only become thick, but, the animal had receded from its first inclosure, and had formed a second three inches up the tube, and afterwards a third two inches further on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to the diminution... | |
 | 1842 - 554 páginas
...again the shell had not only become thick, but the animal had receded from its first inclosure, and had formed a second three inches up the tube, and afterwards a third two inches further on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to the diminution... | |
 | 1842 - 528 páginas
...azain the shell had not only become thick, but the animal had receded from its first inclosure, and had formed a second three inches up the tube, and afterwards a third two inches farther on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to... | |
 | Charles Knight - 1867 - 660 páginas
...again the shell had not only become thick, but the animal had receded from its first inclosure, aud had formed a second three inches up the tube, and afterwards a third two inches further on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to the diminution... | |
 | Charles Knight - 1867 - 660 páginas
...again the shell had not only become thick, but the animal had receded from its first inclosure, and had formed a second three inches up the tube, and afterwards a third two inches further on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to the diminution... | |
 | 1817 - 568 páginas
...manner in which the lower end of a full grown shell is closed, adds, that in some of Mr.Griffiths's specimens " the animal has receded from its first...on.'' The discovery of the two boring shells and. vo flattened opercula prove the necessity for its removal lu Teredo, and the divided summit gives it... | |
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... had formed a second three inches up the tube, and afterwards a third two inches further on, and had made the sides thicker and thicker, so as to diminish the canal in proportion to the diminution of its own size. 