'Ciup. jj r 
MENTAL POWEES. 
35 
01 game being excepting man liacl possessed any mental 
power, or if his powers had been of a wholly different 
Mature from those of the lower animals, then we should 
j U f Ver have been able to convince ourselves that our 
"&b faculties had been gradually developed. But it 
on be clearly shewn that there is no fundamental 
f ifference of this kind. We must also admit that 
lore is a much wider interval in mental power be- 
eeu one of the lowest fishes, as a lamprey or lancelct, 
°no of the higher apes, than between an ape and 
f an ; yet this immense interval is filled up by ntimber- 
Iess gradations. 
Nor 
is 
, - — the difference slight in moral disposition 
etween a barbarian, such as the man described by the 
? navigator Byron, who dashed his child on the rocks 
p 1 dropping a basket of sea-urchins, and a Howard or 
a rkson ; and in intellect, between a savage who does 
Trf U8e an ^ a kstraet terms, and a Newton or Shakspeare. 
^ 1 ferences of this kind between the highest men of the 
J1 ghest races and the lowest savages, are connected by 
10 ® u est gradations. Therefore it is possible that they 
n nght pass and be developed into each other. 
. Ny object in this chapter is solely to shew that there 
j S . 110 fundamental difference between man and the 
b- ier mammals in their mental faculties. Each divi- 
■ *°n ot the subject might have been extended into a 
^ ate essay, but must here be treated briefly. As 
^ classification of the mental powers has been univer- 
“ y accepted, I shall arrange my remarks in the order 
p convenient for my purpose ; and will select those 
tlm S fi &v e most struck me, with the hope that 
Produce some effect on the reader, 
hav + 1 r ? s fi ect to animals very low in the scale, I shall 
lion 6 1° ^-'* e some additional facts under Sexual Selec- 
’ s 10w ing that their mental powers are higher than 
d 2 
