Figs. 878 to 880. — The Eye of the Mole, Talpa, 



Fig. 878. — Section through the whole eye. 

 Note the pore-hke opening in the Uds, the elementary uvea, the cellular lens, 



and the hyaloid form of the central retinal arterj' (after Ciaccio). 



/IM 



» * • ' • 



Fig. 879.— The lens. 



Showing the immature cellular state 

 and the persistence of the vesicle (after 

 RabI). 



Fig. 880.— The retina. 



The layering of the retina is relatively 

 well-developed : G, ganglion cell layer ; 

 IN, inner nuclear layer ; ON , outer 

 nuclear layer. Blood vessels, B V , are seen 

 in the inner layers and there is an external 

 limiting membrane, an internal limiting 

 membrane, IM, and nucleated sui^porting 

 fibres, SF. Three types of visual cells 

 are present : rods, R, cones, C, and 

 " indifferent " elements, / (after Kohl). 



