EXPLANATION OF THE PLATES. 



PLATE LXVII. 



Fig. 1 . Vertical section of cornea, showing the conjunct! val 

 epithelium, the cornea proper, posterior elastic la- 

 mina, and epithelium of the aqueous humour. 54 

 diameters. 



Fig. 2. A portion of the vascular layer of the retina, in- 

 jected. From a preparation belonging to Mr. 

 Quekett. 60 diameters. 



Fig. 3. Section of schlerotic and cornea at the junction of 

 the two parts. In the schlerotic, the spaces between 

 the fibrous tissue are seen to be more or less 

 rounded, while in the cornea they are elongated 

 and tubular. 54 diameters. 



Fig. 4. Vessels of tunica Ruyschiana, ciliary processes, iris, 

 and membrana pupillaris, injected. From a foetal 

 preparation injected by Mr. Hett. 14 diameters. 



Fig. 5. Nuclei of the granular layer of the retina. 378 

 diameters. 



Fig. 6. Cells of the same. 378 diameters. 



Fig. 7. Transparent cells of the vesicular layer of the retina. 

 Magnified 378 diameters. 



Fig. 8. Caudate cells of the retina. 378 diameters. 



Fig. 9. A portion of the membrana Jacobi. 378 diameters. 



Fig. 10. Fibres of the crystalline lens, a, magnified 198 dia- 

 meters ; b 9 magnified 378 diameters. 



Fig. 11. Tuberculated condition of the posterior elastic la- 

 mina, as seen near its margin. 78 diameters. 



Fig. 12. Peculiar markings on posterior elastic lamina. Mag- 

 nified 78 diameters. 



Fig. 13. Surface of crystalline lens of the sheep, slightly 

 magnified, showing the three radii, and the course 

 of the fibres. 



Fig. 14. Fibres of the lens near its centre, where they are 

 much smaller than on the surface. 198 diameters. 



