IV PREFACE. 



The Horse in Motion is the title chosen for the book ; for the 

 reason that it was the interest felt in the action of that animal that led 

 to the experiments, the results of which are here published, though 

 the interest wakened led to similar investigations on the paces and 

 movements of other animals. It will be seen that the same law 

 governs the movements of most other quadrupeds, and it must be 

 determined by their anatomical structure. 



The facts demonstrated cannot fail, it would seem, to modify the 

 opinions generally entertained by many, and, as they become more 

 generally known, to have their influence on art. 



LELAND STANFORD. 



Palo Alto Farm, California, 

 1 88 1. 



