FURTHER STUDY OF INVOLUNTARY MOVEMENTS. 641 



ing device in a slanting position, and fixing the record-plate upon 

 the wall. The main characteristic of such a record is the sinking 

 of the arm from fatigue ; the movement is rapid and coarse (I of 

 Fig. 10). If the attention be directed to the front, we obtain a 

 resultant of the two tenden- 

 cies, as is shown in the di- 

 agonal line of Fig. 9. Fig. 

 10 illustrates an interesting 

 point similar to that illus- 

 trated in Fig. 3. When the 

 attention is directed down- 

 ward, the hand falls rapidly, 

 I ; but when the attention is 

 directed upward, very little 

 movement at all takes place 

 the tendency to move to- 

 ward the object of attention 

 constantly counteracting the 

 tendency for the arm to fall. 



While we have not been 

 altogether successful in re- 

 cording by these involuntary 

 movements the various pow- 

 ers of different sense-impres- 

 sions to hold the attention, 

 the few successful results are 

 especially interesting. In 

 Fig. 11 the outline I is the 

 movement of the hand dur- 

 ing the thirty-five seconds 

 that the subject was count- 

 ing the strokes of a metro- 

 nome ; the outline II is the 

 movement while counting 

 for twenty-five seconds the 

 oscillations of a pendulum. 

 The latter movement is much 

 more extensive than the for- 

 mer ; the visual holds the at- 

 tention better than the auditory impression. The subject of this 

 record is a noted American novelist, and his description of his 

 own mental processes entirely corresponds with this result. He 

 is a good visualizer, and is eye-minded in every respect. 



We turn to Fig. 12. The subject was asked to call the names 

 of a series of small patches of colored papers hanging upon the 

 wall in front of him. He did this with some uncertainty for 



Fig. 10. I, J Record-plate Vertical. Think- 

 ing of one's feet. Time, 45 seconds. II, f 

 thinking of a point overhead. Time, 45 sec- 

 onds. 



