The Cambridge natural history . enclosing , primitive optic cham-ber ; or, orifice between the closingridges ; , secondary optic chamber ;ci, ci, ciliary body ; /, rudimentarylens ; E, retina. (After Lankester.) I arc. Fig. 90. — Eye inA, Loligo; B, He-lix or Limax; C,Kautilus : ,anterior optic chamber ; c, cor-nea ; int. integu-ment ; ir, iris ; I,lens ; I, externalportion of lens ;, optic nerve ;o/j.(/, optic gang-lion ; , poste-rior oiDtic cham-ber ; r, retina.(After Grenacher.) the front, of the lens. I^ehind the cornea is ;i narrow chamber(the ;tnterior optic cham
The Cambridge natural history . enclosing , primitive optic cham-ber ; or, orifice between the closingridges ; , secondary optic chamber ;ci, ci, ciliary body ; /, rudimentarylens ; E, retina. (After Lankester.) I arc. Fig. 90. — Eye inA, Loligo; B, He-lix or Limax; C,Kautilus : ,anterior optic chamber ; c, cor-nea ; int. integu-ment ; ir, iris ; I,lens ; I, externalportion of lens ;, optic nerve ;o/j.(/, optic gang-lion ; , poste-rior oiDtic cham-ber ; r, retina.(After Grenacher.) the front, of the lens. I^ehind the cornea is ;i narrow chamber(the ;tnterior optic chamber) wliich is continued for three parts 1 Quart. Jourii. Min: Sc. xv. p. 37. I 84 VISUAL POWERS OF CEPHALOPODA chap. round the whole circle of the eye, and into which project thefront portion of the lens and the folds of the iris. Throughoutits whole extent, the anterior optic chamber is lined by theintegument, the portion of which on the inner side is thechoroid. The lens is divided into an outer and inner seg-ment by a thin membrane, and is supported by the ciliarybody which forms a continuation of the retina. The mainportion of the lens lies within the posterior optic cham-ber, at the back and sides of which i
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
