138 



AMEBOID MOVEMENT 



ures 45, 46). The spirals were right and left handed in the same 

 individual, and sometimes in the same experiment. In these ex- 

 periments the subject was totally unconscious of the direction in 

 whkh he was walking. No effort of consciousness seemed capable 

 of changing the degree of curvature of the spiral or circle and 

 keep it smooth, though one could of course at any time break into 

 the spiral or circle and walk off in another direction. (The writer 



brush 



Figure 46. Illustrating a path walked by a normal right-handed man 

 (J. D.), blindfolded and counting his paces. The path was 560 paces long 

 and was walked over the same field as the path illustrated in figure 45. 

 The path had to be terminated because of a clump of brush. 



himself walked in several experiments.) If one has one's mind 

 strongly on the direction of walking, thinking of each step, the 

 curve of the path shows small "wabbles" ; but if one recites some- 

 thing or counts his paces, the curves are quite smooth. 



Considerable unevenness of the ground has no effect on the 

 curvature of the spiral. Structural differences in the legs are also 



