MECHANICS OF THE INNER EAR 



IO3 



A to C, and up from C to M. Down from M to W, 

 and up from W to ©=A. The sections from the 

 three hundred and thirty-seventh to the three hundred 

 and sixty-sixth move down from A to K, and up from K to M. 

 Down from M to W, and up from W to @=A. The sections 

 from the three hundred and sixty-seventh to the three hun- 

 dred and seventy-sixth move down from A to K, and up from 

 K to U. Down from U to W, and up from W to ©=A. All 

 these sections therefore receive two shocks during the period. 

 The sections from the three hundred and seventy- seventh 

 to the three hundred and eighty-seventh move down from U 



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

 The tone 1 from the three hundred and eighty-eighth 



to the three hundred and ninety-eighth 



move down from A to K. and up from K to ©=A. All 



these sections therefore receive one shock during the period. 



The relative intensities of the several tones, if we accept 



the third, fourth, and sixth provisional assumptions for this 



case, are shown in the following table. 

 The relative which contains the number of partition 



intensities sections conveying each tone in absolute 



numbers as well as in percentages. 



L«t us now apply our theory to the same ratio of the 

 vibration rates, but with different amplitudes of the two sin- 

 usoids. The curve in figure 32 represents 

 the function 



f{x) = 2sin5;r -f- sin&ir. 

 This signifies that the stirrup movement 

 eight has an amplitude which is only one- 

 half of the amplitude of the stirrup move- 

 ment five. The table below contains all the abscissa and 



The combination 

 5 and 8. The 

 amplitude of 

 8 is decreased 



