464 A VERS. 



PLATE XXI. 



Fig. 8. A surface view of the cochlea of a 14 cm. foetus sliovving the nerves 

 from the ganglion to the organ of Corti. The hair-cells are not stained and 

 consequently the stain is incomplete. Htnk. obj. 5, Obh. cam. 



Fig. 9. The peripheral portions of a few of the nerves from the last prepara- 

 tion more highly magnified, to show the manner of branching of the nerve end 

 among the hair-cells. 



Fig. 10. Two hair-cells and their nerves with a third fibre leaving unusually 

 large varicosities. Htnk. obj. 5, Obh. cam. 



Fig. II. A surface view of a portion of the plexus of nerves in the Cortian 

 organ. One fibre is seen to bend off and enter the spiral bundle. 



Fig. 12. A single ganglion cell having three peripheral processes and one 

 central process. PItnk. 5. 



Fig. 13. A multipolar cell from a 14 cm. embryo, with four peripheral pro- 

 cesses. Htnk. obj. 4, Obh. cam. 



Fig. 14. Two cells from the Macula sacculi of a 14 cm. foetus with their ner- 

 vous prolongations. Htnk. obj. 5, Obh. cam. 



Fig. 15. A hair-cell from the second row of outer cells and its nerve. Three 

 rows of stained hair butts indicating the position of the other hair-cells. Htnk. 

 obj. 5, Obh. cam. 



Fig. 16. Three hair-cells from the Macula sacculi of a 14 cm. foetus one of 

 them showing the nerve continuity. Htnk. obj. 5, Obh. cam. 



Fig. 17. Two nerve fibres and their hair-cell terminations some of which are 

 not stained out to the cells themselves. Htnk. obj. 5, Obh. cam. 



