The wisdom and beneficence of the almighty as displayed in the sense of vision : (the Actonian prize-treatise for 1851) / by T. Wharton Jones.

  • Thomas Wharton Jones
Date:
1851
Catalogue details

Licence: Public Domain Mark

Credit: The wisdom and beneficence of the almighty as displayed in the sense of vision : (the Actonian prize-treatise for 1851) / by T. Wharton Jones. Source: Wellcome Collection.

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    of lizards) may be here mentioned, as inter- mediate between the transparent moveable lower eyelid of certain lizards and fi-ogs, and the simple continuation of the skin over the rudimentary eyes in such cases as those just refeiTed to, and as equally con- gruous with the circumstances under which the animals are destined to pass their lives. The palpebral conformation of serpents and geckoes is this :—instead of two moveable eyelids with the usual opening between them, there is a transparent continuation of both skin and conjunctiva united, over the fi'ont of the eye, set like a spectacle-glass, as it were, in a sort of frame formed by the common skin around the margin of the orbit. In man the eyelids and iris often act in conjunction. In some of the lower animals, there are certain points in which the iris and eyelids approximate not only in function, but even somewhat in analogous conforma- tion. In connexion, therefore, with the subject of the eyelids, it will not be out of place to allude to that flocculent growth of