190 MOVEMENT 



diagram may show more clearly the gradual change 

 that occurs in the sequence of these two diagonal foot- 

 falls, the lines which represent them on the diagram 

 are united, so as to mark the commencement of 

 each footfall. The connecting-lines, at first widely 



Fig. 127.— Transition from a gallop (three time) to a trot. 



separated, approach nearer and nearer together, and 

 ultimately unite as the diagonal footfalls become 

 perfectly synchronous, a characteristic of the trotting 

 step.* 



The Successive Positions of the Feet indicated by their 

 Impressions on the Ground. — Although chronography 

 may be a perfect method for expressing the actual 



* Other transitions have been observed in the same way. The 

 transition from trotting to walking is effected by an inverse procedure 

 to that which has just been described. It is brought about by the 

 gradual hurrying up of the movements of the fore feet, and this 

 is accompanied by a general slackening in speed (Fig. 125). The 

 dotted line uniting the diagonal beats of the left feet, is at first 

 vertical, and expresses that in trotting these beats are simultaneous 

 This line becomes more and more oblique during the process of 

 transition, and thus shows how the synchronism ceases, and that there 

 is a delay on the part of the hind feet. 



The transition from trotting to galloping is very curious. Fig. 126 at 

 the commencement shows that the trot is already rather broken, the 

 dotted lines uniting the diagonal beats AG-PD is at the start rather 

 oblique, and indicates a slight delay on the part of the hind foot. 

 This obliquity increases, but only in the left diagonal beats. The 

 right diagonal pair, AD-PG, remain synchronous, before and after a 

 galloping pace has been established. This transition is not effected 

 by the delay of the hind foot alone, but also by the advance of the 

 fore foot, so that the two diagonal beats, which in trotting were 

 synchronous, now have an interval between them equal to the whole 

 galloping step. This interval corresponds to the long period of silence 

 noticed in ordinary galloping. 



The transition from galloping to trotting is effected by an inverse 

 process (Fig. 1^7). The transition from a gallop in four-time to a 

 gallop in three-time is effected by a gradual anticipation in the beats 

 of the hind feet. 



