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UNIVERSITY OF MISSOURI STUDIES 



period, we obtain a compound curve as shown in figure 16, 

 which is exactly like figure 14 when read from the right to the 

 left. And if we change the phase again in the same manner, 

 that is, move curve two again one-twelfth of the period 

 to the right, we obtain a compound curve as shown 

 in figure 18, which is exactly like figure 11 only turned 

 upside down. We shall demonstrate in the succeeding 

 paragraphs that it is entirely irrelevant with respect 



Fig. 14. The combination 2 and 3. Second characteristic phase 



to our theory whether we read a curve from the left 

 or from the right, in its first position or turned upside 

 down. We shall demonstrate thus that there are in- 

 deed only two compound curves, no more, which are character- 

 istic of a combination of two sinusoids. This is an important 

 fact because it makes much simpler and easier our task of 

 comprehending the function of the inner ear. 



