We obtain therefore, with the above-mentioned medium rapidity of the metronome, feelings of pleasure and feelings of strain and relaxation in close connection with each other, as regular concomitants of rhythmical impressions. This, however, is essentially changed if the rapidity of the beats is altered. If we chose intervals of from to 3 seconds, strain and relaxation follow similarly as before. They appear even more distinctly, since the strain increases, to a greater intensity because of the longer intervals. But just as distinctly does the feeling of pleasure decrease with this increase in the length of the interval, and we soon reach the limit where the strain of expectation becomes painful. Here, then, the former feeling of pleasure is transformed into a feeling of displeasure, which is again closely connected with the feelings of strain and relaxation. Now let us proceed in the opposite direction by making the metronome beats follow each other after intervals of 1/2 to 1/4 of a second, and we notice that the feelings of strain and relaxation disappear. In their place appears an excitement that increases with the rapidity of the impressions, and along with this we have generally a more or less lively feeling of displeasure. We see, therefore, a new feeling added to those already found. We may call it most appropriately excitation. It is sufficiently well known to us in ordinary life in its more complicated forms, where it obviously forms an essential component of many emotions, e.g. anger, lively joy, &c. We can also find the contrast to this feeling of excitation with the help of the same instrument, by suddenly decreasing the rapidity of the beats to their medium rapidity again. This change is regularly accompanied by a very distinct feeling of quiescence (a quieting or subduing feeling).