MECHANICS OF THE INNER EAR 121 



C to E. Down from E to K, and up from to K to M. Down 

 from M to O, and up from O to U. Down from U to W, and 

 up from W to Y. Down from Y to 2t, and up from 3t to 

 @^A. The nerve ends located on these sections therefore 

 receive five shocks during the period. 



The five sections from the six hundred and forty-eighth 

 to the six hundred and fifty-second 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 lo- 

 cated on these sections therefore receive three shocks during 

 the period. 



The sections of the partition from the six hundred and 

 fifty-third to the seven hundred and seventieth move down 



and up twice during the period. Let us 

 The tone 2 examine those from the six hundred and 



fifty-third to the six hundred and seventy- 

 second. 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 from the seven hundred and seventy-first 

 to the seven hundred and eighty-third move down from U 



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

 The tone 1 from the seven hundred and eighty-fourth 



to the seven 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 : 



