Carpenter. — Oculomotor Nerve in Chick. 



PLATE 6. 



Fio. 18. Reconstruction from five consecutive parasagittal sections tiirough ventral 



wall of liind-brain of an embryo in Stage V (118|^ lirs. incubation), 



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



viewed from riglit side. X 150. 

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



Fixed in piero-eulphuric mixture and stained with Delafield's haema- 



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 Eath's fluid. X 160. 



