MOTION. 



469 



equal length, equally extended, and represented 

 at the moment when the previously swinging 

 leg is placed on the ground ; but Jig. 260, 

 which is walking slowly, has the leg advanced 

 far beyond the vertical. Fig. 259, which is 

 walking quicker, has the leg less advanced, 

 whilst fig. 258, which represents the greatest 

 possible celerity, has the foot placed directly 

 in the vertical line, passing through the head of 

 the femur. We observe also that of the paths 



described by the swinging leg of the three 

 figures, that of Jig. 260 has nearly completed 

 the entire curve, that of Jig- 259 a little more 

 than half, and that of Jig. 258 exactly half 

 the curve ; and that the dotted line which 

 serves to indicate the path of the leg is least 

 in Jig. 260, greater in Jig. 259, and greatest in 

 Jig. 258. The time is greatest in Jig. 260, less 

 in Jig. 259, and least in Jig. 258 ; conse- 

 quently, when the leg swings beyond the 



Fig. 257. 



Fig. 258. 



Fis. 259. 



