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sexual selection: man. 
Part II. 
through sexual selection ; hut this view is supported by 
various analogies, and we know that negroes admire 
their own blackness. With mammals, when the sexes 
differ in colour, the male is often black or much darker 
than the female ; and it depends merely on the form of 
inheritance whether this or any other tint shall be trans- 
mitted to both sexes or to one alone. The resemblance 
of Pithecia saianas with his jet black skin, white rolling 
eyeballs, and hair parted on the top of the head, to a 
negro in miniature, is almost ludicrous. 
The colour of the face differs much more widely in 
the various kinds of monkeys than it does in the races 
of man ; and we have good reason to believe that 
the red, blue, orange, almost white and black tints of 
their skin, even when common to both sexes, and the 
bright colours of their fur, as well as the ornamental 
tufts of hair about the head, have all been acquired 
through sexual selection. As the newly-born infants of 
the most distinct races do not differ nearly as much in 
colour as do the adults, although their bodies are com- 
pletely destitute of hair, we have some slight indication 
that the tints of the different races were acquired sub- 
sequently to the removal of the hair, which, as before 
stated, must have occurred at a very early period. 
Summary . — We may conclude that the greater size, 
strength, courage, pugnacity, and even energy of man, 
in comparison with the same qualities in woman, were 
acquired during primeval times, and have subsequently 
been augmented, chielly through the contests of rival 
males for the possession of the females. The greater 
intellectual vigour and power of invention in man is 
probably due to natural selection combined with the 
inherited effects of habit, for the most able men will 
have succeeded best in defending and providing for 
