Caepbhtbr. — Oculomotor Nerve in Chick. 



PLATE 5. 



Fig. 15. From an embryo in Stage III (88 hrs. incubation), showing cells of distal 

 enlargement of oculomotor nerve. Fixed in corrosive-acetic mixture 

 and stained with iron hsematoxylin. X 900. 



Fig. 16. From an embryo in Stage IV (100 hrs. incubation). A, Ganglion cells 

 in ophthalmic branch of trigeminal nerve j B, C, cells in mesenchyme 

 between ophthalmic branch of trigeminal nerve and fundament of 

 ciliary ganglion (y, S, ganglion cells) ; D, ophthalmic-ganglion cells 

 within ciliary ganglion ; E, ganglion cells of ciliary ganglion (d.', cl.", 

 " accompanying " cells in ciliary ganglion, which should have been 

 lettered cl. comit.). Fixed in corrosive-acetic mixture and stained with 

 iron hsematoxylin. X 1400. 



Fig. 17. Longitudinal section through left oculomotor nerve proximal to ciliary 

 ganglion. From an embryo in Stage IV (100 hrs. incubation). Fixed 

 in corrosive-acetic mixture and stained with iron hsematoxylin. X 900. 

 NoTB. — The lettering gn, cil. should have been cl. gn. 



