EXPLANATION OF THE PLATES. 



PLATE LXVIII. 



Fig. 1. Globe of the eye of the sheep, magnified 3 dia- 

 meters. The schlerotic being removed, the choroid 

 is seen, as well as the disposition of the stellate 

 pigment cells, which lie in the intervals between 

 the venae vorticosae, and which consequently follow 

 a similar disposition. 



Fig. 2. The same, showing the venae vorticosae injected. 

 Magnified 3 diameters. 



Fig. 3. Conjunctival epithelium, oblique view of, 378 dia- 

 meters. 



Fig, 4. A portion of the ciliary muscle. 198 diameters. 



Fig. 5. Conjunctival epithelium, front view of. 379 dia- 

 meters. 



Fig. 6. Gelatinous nerve fibres of retina. 378 diameters. 



Fig. 7. Cellated structure of the vitreous body. 70 dia- 

 meters. 



Fig. 8. Elastic fibres lying on the anterior surface of the 

 posterior elastic lamina. 70 diameters. 



Fig. 9. A portion of iris, showing its blood-vessels and 

 muscular fibrillae. 70 diameters. 



Fig. 10. Epithelium of the crystalline lens. 198 diameters. 



Fig. 11. Ditto of the aqueous humour. 198 diameters. 



Fig. 12. Cells of the hexagonal epithelium of the choroid. 

 Magnified 378 diameters. 



Fig. 13. Cells and fibres of the stellate pigment of the 

 choroid. 378 diameters. 



Fig. 14. Irregular pigment cells of the uvea. 378 diameters. 



