PRACTICAL HISTOLOGY. 



[XXXII. 



spaces in the same plane, but also with the spaces in lower and 

 deeper planes. 



5. Iron Sulphate Method (Lesson XI. 13). The matrix is blue 

 and the spaces are clear and not stained. 



THE SCLEROTIC, CHOROID, AND CILIARY REGION. 



6. Sclerotic and Choroid (L.H.). From an eye hardened in 

 Miiller's fluid and stained in bulk in borax-carmine cut sections in 

 paraffin to include the sclerotic and choroid. Observe 



(i.) The sclerotic (fig. 338). (a.) Composed mainly of bundles 

 of white fibrous tissue crossing each other in several directions. 



PIG. 3 r, 9 .- Horizontal Section of Anterior Quadrant of Eyeball. /. Conjivn 

 Sclerotic; h. Iris; ?. Llfj. ixjct.inat.iini irilis; k. Canal of Schlernm ; I. Long 

 m. Circular fibres of ciliary muscle ; n. Ciliary process ; o. Ciliary part of reti 



f. Conjunctiva; s. 

 \\ ; 1. Longitudinal ; 

 part of retina. 



(/>.) A narrow layer, the lamina supra-choroidea. 

 (2 ) Inside this a section of the choroid composed of the follow- 

 ing layers from without inwards 



(a.) Layer with large vessels and numerous branched pigment- 



cdls. This forms by far the thickest layer. 

 (b.) Limiting layer. 



