GAITS. 



27 



I suitably spaced these photographs and submitted 

 them to the test of the zootrope : the experiment was 

 conclusive and the movement was produced, recoinposed, 

 complete, and successive, with all its periods. Here I 

 present to the reader the complete set of silhouettes in 

 the order in which this optical illusion was shown 

 in the animating mechanism to which reference has just 



Fig. 12. 



been made. The zootrope of the gaits of the horse can 

 be obtained at the office of U Illustration, 13, Rue Saint 

 Georges, Paris. 



In the natural gallop, that with three times, or hunting 

 gallop, a mitigated pace in open country, the traces of 

 the two opposite members are never parallel in pairs, as 

 formerly represented ; therefore, the anterior members 

 should not be drawn at the same flexion, with a very 

 open angle having its apex in the chest and terminated 

 by feet which diverge at unequal height from the ground, 

 (A, fig. 13), for, if examination be made of the traces 

 which these leave upon sand or slightly damp soil, it 

 will be perceived that these feet really converge, since 

 the quicker the gait, the more the trails have a tendency 

 to come nearer each other in their succession (B), in 

 the intersection of the medial plane of the animal with 

 the ground. 



When the head and neck of the animal are carried 

 to the fore, in order that the nostrils, the larynx and 



