208 MOVEMENT 



the skeletal bones. This was a troublesome task, on 

 account of the number of joints, and because tLe images 

 of the hind-quarters were superimposed in those of the 

 fore-quarters. With the assistance of Dr. Pages, we 

 have constructed diagrams of the movement of horses 

 at different paces, although the individual trajectories 

 of the various parts are occasionally rather complicated 

 (Fig. 148). 



In galloping, chronophotography demonstrates very 



Fig. 147.— Horse prepared lor experiments with geometrical chroiiophotograpas. 



strikingly the part played by the elastic flexor tendon 

 in breaking the shock of the hind foot as it strikes the 

 ground, for at this moment the foot supports the entire 

 weight of the body. 



One of our figures shows that the fetlock executes an 

 alternating movement. The extent of this retrograde 

 movement at the moment of contact is very consider- 

 able in long-limbed horses. This explains the easiness 

 of their action. All this shows the advantages of 



