THE HORSE— A MACHINE 9 



6. How does the centre of gravity conduct itself when the horse moves 1 



7. What is the relation of the size of the base of support to the stability 



of the equilibiium ? 



8. What are the changes in the size and shape of the base of support 



which may occur as the horse progresses from the standing posi- 

 tion to the run? 



9. How does the stability of the equilibrium measure the power of which 



a horse is capable? 

 10. How does the instability of the equilibrium measure the speed of 

 which a horse is capable? 



