Cabpenter. — Oculomotor Nerve in Chick. 



PLATE 6. 



Fig. 18. Reconstruction from five consecutive parasagittal sections through ventral 



wall of hind-brain of an embryo in Stage V (118^ hrs. incubation), 



giving a diagrammatic view of proximal end of left abducent nerve, 



viewed from right side. X 150. 

 Fig. 19. Enlarged view of a root of the abducent nerve shown in Figure 18. 



Fixed in picro-sulphuric mixture and stained with Delafield's hsma- 



toxylin. X 800. 

 Fig. 20. Parasagittal section through an embryo in Stage III (93 hrs. incubation), 



viewed from left side, showing root of oculomotor nerve. Fixed and 



stained in vom Path's fluid. X 160. 



