152 MR. DARWIN'S CRITICS Vv 
had been developed from some other animal as it 
is now, when we know that for every bone, muscle, 
tooth, and even pattern of tooth, in man, there isa 
corresponding bone, muscle, tooth, and pattern of 
tooth, in an ape. And this shows one of two things 
—either that the Quarterly Reviewer's notions of 
probability are peculiar to himself, or that he has 
such an overpowering faith in the truth of evolution 
that no extent of structural break between one 
animal and another is sufficient to destroy his con- 
viction that evolution has taken place. 
But this by the way. The importance of the . 
admission that there is nothing in man’s physical — 
structure to interfere with his having been evolved ~ 
from an ape is not lessened because it is grudg-_ 
ingly made and inconsistently qualified. And in-— 
stead of jubilating over the extent of the enemy’s 
retreat, it will be more worth while to lay siege to — 
his last stronghold—the position that there is a 
distinction in kind between the mental faculties — 
of man and those of brutes, and that in consequence ~ 
of this distinction in kind no gradual progress — 
from the mental faculties of the one to those of the — 
other can have taken place. 
The Quarterly Reviewer entrenches himself : 
within formidable-looking psychological outworks, 
and there is no getting at him without attacking 
them one by one. 
He begins by laying down the following pro- 
position. “ ‘Sensation’ is not ‘thought, and no 
- “oP eee PO eee eee Te 
