ANIMAL LOCOMOTION. 



75 



tweeu the two feet of a single pair when in extremes of forward 

 and backward movement are correspondingly great. 



In Fig. 1 the animal has just left lateral support, in which 

 both limbs move in the centre of the body by the left fore foot 

 leaving the ground. In Fig. 2 the support is diagonal, and both 

 limbs (right fore and left hind) are removed from the centre. 

 This is retained through Figs. 3 and 4. In Fig. 5 the same dis- 



(FlG. 5 OF SERIES.) 



position continues, but it is noteworthy because of the shape of 

 the left hind limb, which resembles the shape of the ungulate 

 foot. The right fore limb is now in the extreme of backward 

 movement. 



(Fig. 6 of series.) 



In Figs. 6 and 7 the position is left fore and right hind (lateral 

 heterochiry). 



