480 

 TABLE II. O b s e r V e r R. 



Groups 



1st 



interval 



2nd 



interval 



3rd 



1st 



interval 



2nd 



interval 



3rd 



Arithm. mean Mean deviation Median 



1.06 



1.02 



1.67 



1.45 



1 



0.95 



1.55 



1.27 



1.03 



0.90 



0.90 



0.90 



1 



1.10 



0.73 



0.69 



1 



1 



0,70 



0.67 



appears, that the mean deviation with 1 as well as with II, for 

 groups and intervals is most times greater in the learning than in 

 the repetition-experiment: in the latter the rhythm is consequently 

 more constant. It also appears that the experimental method is more 

 favonrable to a constant rhythm than the natural method, the mean 

 deviation being generally smaller with II than with I. With II it 

 is especially the intervals that are more equalized. 



Concerning the influence exerted on the rhythm by an increased 

 familiarity with the material, we see in tables IV, V, VI, VII, VIII, 

 IX in the learning-experiments with I, an increase of the time 

 falling to every syllable of the group (1, 2 and 3) from A to C, 

 i,^. in tlie case of greater familiarity with the material. For M and 



