Illustrations of Paleys Natural Theology With Descriptive Letter Press
The book Illustrations of Paleys Natural Theology With Descriptive Letter Press was written by author James Paxton Here you can read free online of Illustrations of Paleys Natural Theology With Descriptive Letter Press book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Illustrations of Paleys Natural Theology With Descriptive Letter Press a good or bad book?
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In some species it reaches the lens, and is attached to it, Fig. 4, 6. In the plate the marsupium is marked with a *. FIG. 5. The head of an eel; the skin is represented turned back ; and as the transparent horny covering of the eye, a, a, is a cuticular covering, it is separated with it. . In * ; J CHAPTER III. TAB. IV. THE LACHRYMAL APPARATUS AND NICTITATING MEMBRANE. FIG. 1. A, the lachrymal gland, the source of the tears; b, its several ducts, diffusing this fluid over the eye ; c, c, the p...uncta lachrymalia, which convey the tears into, d, the lachrymal sac, terminating in the nostril. FIG. 2. The nictitating membrane, or third eyelid ; it is a thin semi-transparent fold of the conjunctive, which, in a state of rest, lies in the inner corner of the eye, with its loose edge nearly vertical, but can be drawn out so as to cover the whole front of the globe. In this figure it is represented in the act of being drawn over the eye. FIG. 3. The muscles of the nictitating membrane are very singular in their form and action, they are attached to the back of the sclerotic ; one of them, a, which from its shape is called quadratus, has its origin from the upper and back part of the sclerotic ; its fibres descend towards the optic nerve, and ter- minate in a curved margin with a cylindrical canal in it.
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