64 THE CHANGES IN THE GALLOP. 



made. But I am not aware that any writer has 

 observed that there were really two modes of 

 changing, or that either of them has ever been 

 described before I attempted it, — here, in my book 

 on ' The Gallop,' and in my letters to the Illustrated 

 Sporting and Dramatic News. 



I have formed my theories of the changes in the 

 gallop from my experiments in photographing the 

 moving horse, from riding horses in the changes, 

 and from watching the training of school horses, 

 and from all these tests I feel confident that they 

 are correct in every particular. 



Although the books do not mention that there 

 are two distinct modes of changing, I think that 

 some riders are aware of it. After I had satisfied 

 myself that there were two, I asked a number of 

 professional riders in how many ways a horse could 

 change, and I found one, Herr Wilhelm Jetter, of 

 Stuttgart, who told me that when he felt that in 

 changing his horse was false in the second beat 

 (Fig. 5), he knew that the change had been begun 

 in the fore-hand, and that when the change was 

 smooth he knew it had been begun by the hind- 

 legs ; but he did not profess to know, what the 

 camera alone could disclose, how the horse moved 

 its legs in changing, and exactly when the change 

 began. 



