A description of the teeth of the Anarrhichas lupus Linnaei, and of those of the Chaetodon nigricans of the same author : to which is added, an attempt to prove that the teeth of cartilaginous fishes are perpetually renewed / by William Andre ; communicated by Sir Joseph Banks.

  • André, William, 1743-1807.
Date:
1784
Catalogue details

Licence: Public Domain Mark

Credit: A description of the teeth of the Anarrhichas lupus Linnaei, and of those of the Chaetodon nigricans of the same author : to which is added, an attempt to prove that the teeth of cartilaginous fishes are perpetually renewed / by William Andre ; communicated by Sir Joseph Banks. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    .. . IwH.iil ■ / l A Defcription of the Teeth of the Anarrhichas Lupus Linnsei, and of thofe of the Chaetodon nigricans of the fame Author; to which is added, an Attempt to prove that the Teeth of cartilaginous Fijhes are perpetually renewed. By Mr. William Andre, Surgeon; communicated by Sir Jofeph Banks, Bart. P. R. S. 1 l i-rf. J.' , . - •' • ' ‘ 1 ' ->rr : ': 'TV *' « * ’ ■ . . «. 1 . 1 « . . ► ■ ' * ' » , 1 Read at the Royal Society, March 18, 1784. THE amazing variety there is in the external form of fifhes muft be obvious to a common obferver; and who- ever examines will be convinced, that the fame variety pre- vails in their internal flrudture. No parts, perhaps, afford a more convincing proof of the laff affertioh than the teeth of fifhes. To adduce a few inftances, let ns only recoiled! the tuberculated teeth in the thorn-back; the triangular ferrated teeth in the fhark ; the {lender flexible teeth in the chatodontes, or angel-fifhes. There is not only a difference of their form, but alfo in the fubftances of which they are compofed; fome being of a foft horny nature; others made up of bone ; others of that fubftance we call enamel in the teeth of quadrupeds; and fome having the apparent hardnefs and tranfparency of cryftal. We may alfo notice their uncommon fituation ; many fifhes having teeth not only in their jaws, but on the tongue, the palate, and about the fauces. To illuftrate in fome degree this part of natural hiftory, I (hall defcribe the teeth of the Anarrhichas Lupus, or Sea- wolf, and thofe of the Chcetodon nigricans, a fpecies of A Angel-