. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fie. 368.—Formation of an Image by Reflection. (Ganol.) The rays from the object A B are reflected by the mirror N M so as to make their angle of reflection equal to their angle of incidence; if a perpendicular, A D, is T?rn Qfio nr*^.™.™ TT T ttc^.^ . — „ t> — let fall from the point. A. and one, B C, from the FlG' 369.—DIAGRAM ILLUSTRATING RE- point, B, and the reflected rays prolonged until they FRACTION OF .LIGHT. (Gemot.) meet these perpendiculars, tho image is apparently The incident ray, S O, on
. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fie. 368.—Formation of an Image by Reflection. (Ganol.) The rays from the object A B are reflected by the mirror N M so as to make their angle of reflection equal to their angle of incidence; if a perpendicular, A D, is T?rn Qfio nr*^.™.™ TT T ttc^.^ . — „ t> — let fall from the point. A. and one, B C, from the FlG' 369.—DIAGRAM ILLUSTRATING RE- point, B, and the reflected rays prolonged until they FRACTION OF .LIGHT. (Gemot.) meet these perpendiculars, tho image is apparently The incident ray, S O, on striking the surface nm formed behind the mirror at a distance equal to the is bent in the direction OH, SAO being the angle of nitual distance of the object in front of the mirror. incidence, H O B the angle of refraction. • - which furnishes a thick, whitish secretion, which often accumulates at the corresponding angle of the eyelids. Rudiments of this gland are also found in solipedes. The tears are collected by the lachrymal points, which conduct them through the lachrymal duct and nasal canal to the nasal cavities. In certain rodents, the hares in particular, the lachrymal canals are replaced by fissures which establish communication between the conjunctival surface and the nasal fossae. In the study of the appreciation of the impression of a rav of light upon the retina and the formation of an image a comprehension of the laws of light is essential. The eye is furnished with certain mechanisms by which an image is formed somewhat in the same manner as in a camera obscura. Such mechanisms are what are termed the dioptric mechanisms of the eye. Rays of light striking the retina give rise to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, Robert Meade, 1854-. Chicago, A. Eger
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