MECHANICS OF THE INNER EAR 



117 



to Y. Down from Y to 31, and up from 21 to @=A. The 

 nerve ends located on these sections therefore receive five 

 shocks during the period. 



The sections from the four hundred and fifty-third to 

 the four hundred and fifty-eighth move down from Y to C, 

 and up from C to I. Down from I to K, 

 The tone 3 and up from K to M. Down from M to 



W, and up from W to Y. The nerve ends 

 located on these sections therefore receive three shocks dur- 

 ing the period. 



The sections of the partition from the four hundred and 

 fifty-ninth to the five hundred and seventy-second move down 

 and up twice during the period. Let us 

 The tone 2 examine, for example, the four hundred 



and fifty-ninth and the four hundred and 

 sixtieth. They move down from Y to C, and up from C to 

 M. Down from M to W, and up from W to Y. The nerve 

 ends located on these sections therefore receive two shocks 

 during the period. 



The sections of the partition from the five hundred and 

 seventy-third to the five hundred and eighty-fourth move down 

 from U to K, and up from K to U. The 

 The tone 1 sections from the five hundred and eighty- 



fifth to the five hundred and ninety-sixth 

 move down from A to K, and up from K to A. The nerve 

 ends located on these sections therefore receive one shock 

 during the period. 



The relative intensities of the several 

 The relative tones under the third, fourth, and sixth pro- 



intensities visional assumptions are shown in the fol- 



lowing table. 



