. The elements of embryology . Embryology. 152 THE THIED DAY. Fig. 52. V!.*.t-U-|.i-l-l.|.^l.[-,^ [ Section through the eye of a Fowl on the eighth day OF development, to shew the iris and cornea in the process of formation. (After Kessler.) ep. epiblastio epithelium of cornea ; cc. corneal corpuscles growing into the structureless matrix of the cornea ; dm. Descemet's membrane ; ir. iris; cb. mesoblast of the iris (this reference letter points a little too high). The space between the layers dm. and ep. is filled with the structureless matrix of the cornea. through the structureless cor
. The elements of embryology . Embryology. 152 THE THIED DAY. Fig. 52. V!.*.t-U-|.i-l-l.|.^l.[-,^ [ Section through the eye of a Fowl on the eighth day OF development, to shew the iris and cornea in the process of formation. (After Kessler.) ep. epiblastio epithelium of cornea ; cc. corneal corpuscles growing into the structureless matrix of the cornea ; dm. Descemet's membrane ; ir. iris; cb. mesoblast of the iris (this reference letter points a little too high). The space between the layers dm. and ep. is filled with the structureless matrix of the cornea. through the structureless corneal layer, and divide it into two strata, one adjoining the epiblast, and the other adjoining the inner epithelium. The two strata become gradually thinner as the corpuscles invade a larger and larger portion of their substance, and finally the outermost portion of each alone remains to form above and below the membrana elastica anterior and posterior (Descemet's membrane) of the cornea. The corneal corpuscles, which have grown in from the sides, thus form a layer which becomes continually thicker, and gives rise to the main substance of the cornea. Whether the increase in the thickness of the layer is due to the immigration of fresh corpuscles, or to the division of those already there, is not clear. After the. 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 Foster, M. (Michael), Sir, 1836-1907; Balfour, Francis M. (Francis Maitland), 1851-1882; Sedgwick, Adam, 1854-1913; Heape, Walter, 1855-1929. London ; New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, bookpubli, booksubjectembryology
