146 THE HORSE 



proves that as many as three feet may be on the ground but never four. 

 The diagonal limbs in quadrupeds do not act synchronously as at a slow 

 pace it is more difficult to maintain the equilibrium. The centre of gravity 



always falls within a triangle because the horse rests on two front legs, and 

 one hind one, but not on two only. The duration of time in which the 



centre of gravity has but two supports is diminished by one foot holding 

 the ground while the other is advanced. 



As to which foot shall be put forward when a horse commences to walk 

 will depend on habit or convenience. One trained to stand to " attention " 

 (not resting a hind-leg as he otherwise would) will lead off with his near 



