. Outlines of zoology. Zoology. Fig. 143. -Developmental of the eye. (After Balfour and Hertwig.) I. Section through first embr^'onic vesicle, showing outgrowth of optic vesicles {) to meet the skin ; /.I'., fore brain ; C, the gut. 2-4. The formation of the lens (/) from the skin, jtnd the modifica- tion of the optic vesicle into an optic cup ; A'., retina ; z'.h.^ vitreous humour. 5. ! aspect of embryonic eye ; /., lens. vitreous humour consists of nerve fibres, while that furthest from the rays of light and next the pigment epithelium consists of sensitive rods and cones. The
. Outlines of zoology. Zoology. Fig. 143. -Developmental of the eye. (After Balfour and Hertwig.) I. Section through first embr^'onic vesicle, showing outgrowth of optic vesicles {) to meet the skin ; /.I'., fore brain ; C, the gut. 2-4. The formation of the lens (/) from the skin, jtnd the modifica- tion of the optic vesicle into an optic cup ; A'., retina ; z'.h.^ vitreous humour. 5. ! aspect of embryonic eye ; /., lens. vitreous humour consists of nerve fibres, while that furthest from the rays of light and next the pigment epithelium consists of sensitive rods and cones. The region where the optic nerve enters, and whence the fibres spread, is called the blind spot, and near. 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 Thomson, J. Arthur (John Arthur), 1861-1933; Newbigin, Marion I. (Marion Isabel), 1869-1934; Smith, Preserved, 1880-1941. fmo. New York, D. Appleton & Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
