106 



A STUDY OF SOME 



metres, was taken as the basis of the scale ; but for greater accu- 

 racy this distance was divided into ten parts, instead of into six, 

 as in the original background. A plan of the track was then 

 made (see Diagram 1) and the scale corrected for the error in per- 

 spective for the area in which the step was taken. In Diagram 2, 





a, Rise and fall and onward movement of head ; b, Lateral sway of head. 



Fig. 2. 



mBSEBsamnummmmmmmsasBam 



c, Kiae and fall and forward movement of right hip ; d, Lateral sway of hip. 



the actual size of the track and the normal scale are in red lines, 

 while the corrected scale is in black lines.* 



It should have been stated that the study of the lateral sway 

 was made upon the middle series of Plate 1, as here the images 

 and background are comparatively sharp. 



* See explanation of Diagrams. 



