XV 



Fig. 18 left side. 



etc. 



Fig. 20. Section through the ciliary body and lens of an embryo of 2 mm. 



1. outer layer of ectoderm (outer part of ciliary body). 



2. inner „ „ „ (inner „ „ „ „ ). 



3. lens. 



4. processes from the ciliary body to the lens. 



Fig. 21. Section through the ciliary body of a squid of 20 mm. 



1. supporting ligament of lens and ciliary body. 



2. fold in the outer part of the ciliary body. 



3. epithelium of the outer chamber of the eye. 



4. lamella of lens. 



5. processes of cells of ciliary body. 



I'ig. 22. Horizontal section thru" the eye. 



A. muscular base of the arms. 



A.G. outer chamber of eye. 



B.S. outer and inner buccal sinuses. 



G. cornea. 



Ga. accessory , or supporting cartilage of the eye. 



Gi.B. ciliary body. 



€i.M. ciliary muscle {nmsculus retractor lentis). 



E. oesophagus. 



F. fascia separating the liver from the oeso- 



phageal smus. 

 I. iris. 

 L. lens. 



6. epithelium of inner chamber. 



7. fascia supporting a fold of the ciliary body. 



8. fibres in fold of the ciliary body. 



9. epithelium of ciliary body. 



