SUMMARY OF THE MECHANISM OF AUDITION. 231 



repeat the tones conveyed to the cochlea, and that we are 

 thus enabled to distinguish the different tones in music. 



"We have no very definite knowledge of the functions of 

 the cells of the organ of Corti, of the otoliths, and of various 

 other structures in the auditory apparatus. Sounds may be 

 conducted to the auditory nerves through the bones of the 

 head and the Eustachian tube, as is shown by the simple and 

 familiar experiment of placing a tuning-fork in vibration in 

 contact with the head or between the teeth. 



