92 UNIVERSITY OF MISSOURI STUDIES 



One of the consequences of the decrease of pressure on the 

 partition at the point of inflection between a maximum and a 

 preceding or following minimum of the 

 Theoretic con- curve consists in the fact that the partition 



sequences of does not move up and down so suddenly 



the inflection as it appeared from our previous graphic 



of the curve representations. We had to point out this 



fact before in mentioning the irregular- 

 ity with which stimuli often seem to be received by the nerve 

 ends according to our simplified graphic representation. The 

 exact time when a stimulus — a shock, as we called it — is re- 

 ceived we now find to be dependent also on the location of each 

 inflection point, not merely on the temporal location of the 

 maxima and minima. Unfortunately, however, we can not 

 determine the time of each shock with certainty even now, 

 taking into account the inflection point. This important ques- 

 tion of theoretical detail must be left open for future investi- 

 gation. 



Another consequence of the decrease of pressure on 

 the partition marked by any point of inflection consists in the 

 fact that a double movement — up and down — of the partition 

 may result, not only from an alternation of maxima and mini- 

 ma of a curve, but also from an alternation of inflection points 

 marking an increasing and decreasing velocity of the stirrup. 

 This means that the number of shocks received by the nerve 

 ends during one period of the curve may exceed the total num- 

 ber of maxima (or minima) in case any part of the curve 

 from a maximum to a minimum or from a minimum to a max- 

 imum contains more than a single point of inflection. An example 

 will be given at once. 



