CHAPTER XI 



LOCOMOTION OP QUADRUPEDS 



Summary. — Chronography shows how the feet rise and fall in the 

 d liferent paces of a horse — Transition or passage from one pace 

 to another — Representation of the attitudes in all paces of a 

 horse, as shown by chronography and hoof-marks — Comparison 

 between diagrams obtained by these methods and those obtained 

 by instantaneous photography — Chronophotography applied to 

 the representation of a horse in motion— Artistic representation 

 of the horse among the ancients — Locomotion of the horse from 

 the physiological point of view — Geometrical chronophotography 

 of the movements taken as a whole— Individual movements of the 

 foot and fetlock. 



Of all four-footed animals, the locomotion of the 

 horse is best understood. For some time past 

 specialists have applied themselves to the study of 

 equine paces, both regular and irregular, and have 

 attempted to define the characteristics of each pace, 

 according to the sequence in which the feet strike the 

 ground ; but, as we have already remarked, however 

 observant the human eye may be, its scope is still very 

 limited. This is proved by the varied opinions of 

 different authors concerning the characteristics and 

 mechanism of certain paces of the horse. The graphic 

 method has, however, in our opinion, been useful in 

 determining the character of each pace with great 

 exactitude, and in showing how the transition occurs 

 between one pace and another. 



The difficulty of observing the different paces con- 

 sists in having to follow the movements of all four 



