The anatomy of the common squid, Loligo pealii, Lesueur . , Hess finds that the CeiAalo-pod retina contains a pui-ple pigment which is very similar to, perhaps identicalwith, visual purple. 87 Bekh lias described the mechanism of accomodation and has shown that it ismuch the same as in the ejes of Teleosts, although there are important both cases the eye is myopic, the convexity of the lens is unchangeable,and accomodation is effected by drawing the lens toward the retina. In fish thefalciform jirotess, or musculus retractor lentis, draws the lens toward the retina,Imt ill the C
The anatomy of the common squid, Loligo pealii, Lesueur . , Hess finds that the CeiAalo-pod retina contains a pui-ple pigment which is very similar to, perhaps identicalwith, visual purple. 87 Bekh lias described the mechanism of accomodation and has shown that it ismuch the same as in the ejes of Teleosts, although there are important both cases the eye is myopic, the convexity of the lens is unchangeable,and accomodation is effected by drawing the lens toward the retina. In fish thefalciform jirotess, or musculus retractor lentis, draws the lens toward the retina,Imt ill the Cephalopod eye, the ciliary muscle accomplishes this. The outer sur-face of the eye is convex and the contraction of the ciliary muscle flattens theouter wall of the eye and draws the lens toward the retina. Moreover, themore violent contraction of one segment of the ciliary muscle turns the lens sothat a ray, which otherwise would not reach the retina, strikes it. Thus, byturning the lens, a moving body may be watched without turning the eye orthe BIBLIOGRAPHY. Babuchin, a. Vergleichend-liistologische Studien. Ueber den Ban der Ceplialopodenretma. Wurzburger natui-w. Zeit. 5, 1864. p. 127— Ueber den feineren Bau der Muskelsubstanzen der Cephalopoden. Arch. f. mikr. Anat. 39, 1892, p. 291—324, pi. XIII—, Th. Die Accommodation des Cephalopodenaugen. Pflueger Arch. f. d. g. Phys. 67, 1897. p. 541— 586, pi. , W. Untersuchungen fiber die Eibildung bei Anneliden nnd Ceplialopoden. Zeit. f. wiss. Zool. 73. 1902—1903, p. 278-301, pi. XVII—XIX. Ueber den Bau des Ovariunis bei Cephalopoden und einiger Naclitrage zur Eibildung derselben. Arch. Naturg. 69, 1903, p. 227—236, pi. , N. Recherches sur le developpement des Cephalopodes. Mem. de la Soc. imp. des Amis dHistoire Nat 24, 1877, 74 pages 10 , E. Beitrag zur vergl. Histologie des Molluskentypus. Arch. f. mikr. Anat. 5 Suppl. 1869, p. 1—111, pi. I—
Size: 1591px × 1570px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidanatomyofcom, bookyear1909
