. The elements of Embryology. Embryology. 138 THE THIED DAY, [chap. much the appearance represented in the diagram Fig. 49, A section of such an eye taken along the Hne y, perpendicular to the plane of the paper, would give a figure corresponding to that of Fig. 50 A. The lens, the cavity and double walls of the secondary vesicle, and the remains of the primary cavity, would all be repre-. DlAGRAMMATIC EePRESENTATION OP THE EyE OF THE ChiCK OF ABOUT THE ThIRD DaY AS SEEN WHEN THE HEAD IS VIEWED FROM UNDERNEATH AS A TRANSPARENT OBJECT, I the lens, I' the cavity of the lens, lying in the hollow
. The elements of Embryology. Embryology. 138 THE THIED DAY, [chap. much the appearance represented in the diagram Fig. 49, A section of such an eye taken along the Hne y, perpendicular to the plane of the paper, would give a figure corresponding to that of Fig. 50 A. The lens, the cavity and double walls of the secondary vesicle, and the remains of the primary cavity, would all be repre-. DlAGRAMMATIC EePRESENTATION OP THE EyE OF THE ChiCK OF ABOUT THE ThIRD DaY AS SEEN WHEN THE HEAD IS VIEWED FROM UNDERNEATH AS A TRANSPARENT OBJECT, I the lens, I' the cavity of the lens, lying in the hollow of the optic cup. r the anterior, u the posterior wall of the optic cup, c the cavity of the primary optic vesicle, now nearly obliterated. Bj inadvertence u has been drawn thicker than r, it should have been thinner throughout. 5 the stalk of the optic cup with s' its cavity, at a lower level than the cup itself and therefore out of focus ; the dotted line indicates the continuity of the cavity of the stalk with that of the primary vesicle. The hne 2, z, through which the section shewn in Fig. 50 C is supposed to be taken, passes through the choroidal 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. London, MacMillan
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Keywords: ., bookautho, bookcentury1800, bookdecade1880, booksubjectembryology
