ACTS OF RUNNING AND LEAPING KANGAROO. 497 
less than half the length of the hinder limbs (fig. 235). The 
feet, as well as the legs, of the Kangaroo are very long (fig. 
Fig. 235.— Kangaroos. 
236), so as to afford (in conjunction with the tail) a firm sup¬ 
port to the animal when preparing to leap. Quadrupeds in 
Fig. 236. —Skeleton of Kangaroo. 
which the length of the posterior extremities greatly predomi¬ 
nates over that of the anterior, are observed to descend hills 
with difficulty at a rapid pace, since the forward inclination 
K K 
