550 FACIAL ANGLE .*-SPECIAL ENDOWMENTS OF MAN. 
in the different species of the Monkey tribe, it varies from 
about 65° to 30° (fig. 293); and as we descend still kwer, we 
find it still more acute. In the Horse and Boar, for example, 
it becomes impossible to draw a straight line from the fore- 
Fig. 293. — Skull op Macacus. Fig. 2P4.— Skull op Boar. 
head to the upper jaw; in consequence of the retreating 
character of the former, and the projection of the nose ; this 
will be evident from an examination of fig. 294. In Birds, 
Beptiles, and Fishes, the facial angle, when it can be mea¬ 
sured, is found to be still further diminished. 
721. It appears, then, that the mind of Man differs from 
that of the lower animals, rather as to the degree in which the 
reasoning faculties are developed in him, than by anything 
peculiar in their hind. Among the more sagacious Quadrupeds, 
it is easy to discover instances of reasoning as close and pro¬ 
longed as that which usually takes place in early childhood ; 
and it is only with the advance of age and the maturity of 
the powers, that the superiority of Man becomes evident. The 
foundation of this superiority lies in the power of self-direc¬ 
tion and self-improvement which Man possesses. Ho race 
among the lower animals ever exhibits a spontaneous ten¬ 
dency to the elevation of its mental powers. When placed 
under new circumstances, and especially when subjected to 
Human training, the domesticable races acquire new capa¬ 
cities ; and individuals frequently display a very extra¬ 
ordinary degree of sagacious appreciation of matters quite 
foreign to their natural habits of life. But neither in races 
nor in individuals are these powers transmitted from one 
generation to another, when, left to themselves, they return 
to anything like a state of nature. In Man, on the other 
hand, the power which every rightly-constituted and rightly- 
