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STRUCTURE OF THE RETINA. [Boon in. 



FIG. 145. DIAGRAM TO ILLUSTRATE THE STRUCTURE OF THE RETINA 



The figure is quite diagrammatic and is introduced simply to assist in the descrip- 

 tion of the probable structure of the retina. 



The several " layers " are indicated by the numeral I, &c in order from within 

 (vitreous humour) outwards. 



On the right-hand side is shewn a fibre of Miiller reaching from the inner limiting 

 membrane m./.i., formed by the coalescence of its feet, to the outer limiting 

 membrane m.U. ; the lateral processes of the fibre are indicated, as well as 

 the nenroglial fibrils (possibly independent of the fibres of Miiller), in III. the 



