AS APPLIED TO MAN. 355 



eat unclean food ; and looks upon the marriage of 

 adult females as gross immorality. 



The strength of the moral feeling will depend upon 

 individual or racial constitution, and on education 

 and habit; the acts to which its sanctions are applied, 

 will depend upon how far the simple feelings and affec- 

 tions of our nature, have been modified by custom, 

 by law, or by religion. 



It is difficult to conceive that such an intense and 

 mystical feeling of right and wrong, (so intense as 

 to overcome all ideas of personal advantage or utility), 

 could have been developed out of accumulated ancestral 

 experiences of utility ; and still more difficult to under- 

 stand, how feelings developed by one set of utilities, 

 could be transferred to acts of which the utility was 

 partial, imaginary, or altogether absent. But if a 

 moral sense is an essential part of our nature, it is 

 easy to see, that its sanction may often be given to 

 acts which are useless or immoral ; just as the natural 

 appetite for drink, is perverted by the drunkard into 

 the means of his destruction. 



Summary of the Argument as to the Insufficiency of 

 Natural Selection to account for the Development of 

 Man. 



Briefly to resume my argument I have shown that 

 the brain of the lowest savages, and, as far as we yet 

 know, of the pre-historic races, is little inferior in size 

 to that of the highest types of man, and immensely 

 superior to that of the higher animals ; while it is. 



2 A 2 



