. Kirkes' handbook of physiology . Fig. 441.—Section of the Eyeball. the anterior and posterior chambers are filled with the transparent aqueousfluid. This fluid is like lymph in its composition. The vitreous chamberbetween the lens and the retina is filled with the clear jelly-like vitreoussubstance. The Cornea. The sclerotic coat is continuous with the cornea infront of the eyeball, but the cornea is transparent and its radius of curvature. Fig. 442.—Vertical Section of Rabbits Cornea, a, Anterior epithelium, showing the differentshapes of the cells at various depths from the free surface; 6
. Kirkes' handbook of physiology . Fig. 441.—Section of the Eyeball. the anterior and posterior chambers are filled with the transparent aqueousfluid. This fluid is like lymph in its composition. The vitreous chamberbetween the lens and the retina is filled with the clear jelly-like vitreoussubstance. The Cornea. The sclerotic coat is continuous with the cornea infront of the eyeball, but the cornea is transparent and its radius of curvature. Fig. 442.—Vertical Section of Rabbits Cornea, a, Anterior epithelium, showing the differentshapes of the cells at various depths from the free surface; 6, portion of the substance of cornea.(Klein.) is less than that of the main portion of the eye. It is composed of strati-fied epithelial cells, and is richly supplied with sensory nerves that forman intra-epithelial plexus of delicate varicose fibrils. The cornea has no blood-vessels, but has a rich network of lymphatic spaces. 632 THE SENSES The Lens. The lens is a special modification composed of highlyrefractive material, situated just behind the iris. It is enclosed in a capsuleand supported in its place by the suspensory ligament, which is fused intothe capsule around its equator. The lens is a biconvex structure composedof transparent fibers which are arranged in concentric layers. Its posteriorcurvature is greater than the anterior, the radii being 6 and 10 mm. respectively. The Ciliary Apparatus and the Iris. These structure
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