THE HORSE— A MACHINE 9 



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



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



of the equilibrium 1 



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? 



