SELECTION ON MAN. 329 
have remained generically, or even specifically, the 
same, while his head and brain alone will have un- 
dergone modification equal to theirs. We can thus 
understand how it is that, judging from the head 
and brain, Professor Owen places man in a distinct 
sub-class of mammalia, while as regards the bony 
structure of his body, there is the closest anatomical 
resemblance to the anthropoid apes, ‘‘every tooth, every 
bone, strictly homologous—which makes the determi- 
nation of the difference between Homo and Pithecus 
the anatomist’s difficulty.” The present theory fully 
recognises and accounts for these facts; and we may 
perhaps claim as corroborative of its truth, that it 
neither requires us to depreciate the intellectual chasm 
which separates man from the apes, nor refuses full 
recognition of the striking resemblances to them, which 
exist in other parts of his structure. 
Conclusion. 
In concluding this brief sketch of a great subject, 
I would point out its bearing upon the future of the 
human race. If my conclusions are just, it must in- 
evitably follow that the higher—the more intellectual 
and moral—must displace the lower and more de- 
graded races; and the power of “ natural selection,” 
still acting on his mental organization, must ever lead 
to the more perfect adaptation of man’s higher facul- 
ties to the conditions of surrounding nature, and to 
the exigencies of the social state. While his external 
form will probably ever remain unchanged, except in 
