. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. VISION. S61 tudinal section. Other specimens may be dissected with and without the use of water. â clerotio dlHMted Mck with Mdarotie t>y one of the Iook b« oata vortieota IS, anterior cilUur and sections Brtical longi- ITUS -CHOROID IgPTtC NERVr ROlO nw }T Flint).. ria. «H.âCert
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. VISION. S61 tudinal section. Other specimens may be dissected with and without the use of water. â clerotio dlHMted Mck with Mdarotie t>y one of the Iook b« oata vortieota IS, anterior cilUur and sections Brtical longi- ITUS -CHOROID IgPTtC NERVr ROlO nw }T Flint).. ria. «H.âCertain parts of ere. 1» 10. (After Sappejr.) 1,1, orjntaiUiw tona; t, hjralotd membrane; 8,â onule of Zlnn; 4, iria; S, a dUaoy prooeaa; libera of ciliary muscle; 7, section of droular portion of ciliarjr muscle; 8, venous plenis of cUiarr mus- cle; », 10, sclerotic coat; 11, IS, cornea; IS, epithelial lajrer ol come*; 14, Descemefs membrane; 15, pectinate Uitament of iris; 16, epitlielium of membrane ot Desoemec; 17, union of sdMrotlo coat with cornea; 18, section of canal of Bcfalwnm, Assuming that some such work has been done, and that the student has become quite familiar with the general structure of the eye, we call attention specially to the strength of the sclerotic coat; the great vascularity of the choroid coat and its terminal ciliary processes, its pigmented character adapting it for the absorption of light; the complicated structure and pro- tected position of the retinal expansion. It may be said that the whole eye exists for the retina, and that the entire mechan- ism besides is subordinated to £he formation of images on this nervous expansion. The eye of the mammal may be regarded as an arrangement of refracting media, protected by coverings, with a window for the admission of light, a curtain regulating the quantity admitted; a sensitive screen on which the images are thrown; surfaces for the absorption of superfluous light; 86 iB
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
