146 SPECIES AND BREEDS. 
water, or the physical conditions established in 
the water, can create a Fish, any mare than it 
follows, that, because they can dwarf a tree, or 
alter its aspect, by stunting its growth in one 
direction, and forcing it in another, therefore the 
earth, or the physical conditions connected with 
their growth, can create a Pine, an Oak, a, Birch, 
or a Maple. 
I confess that, in all the arguments derived 
from the phenomena of domestication, to prove 
that animals owe their origin and diversity to the 
natural action of the conditions under which they 
live, the conclusion does not seem to me to follow 
logically from the premises. And the fact that 
the domesticated animals of all the races of men, 
equally with the white race, vary among them- 
selves in the same way, and differ in the same 
way from the wild Species, makes it still more 
evident, that domesticated varieties do not ex- 
plain the origin of Species, except, as I have said, 
by showing, that the intelligent will of man can 
produce effects which physical causes have never 
been known to produce, and that we must, there- 
fore, look to some cause outside of Nature, cor- 
responding in kind to the intelligence of man, 
though so different in degree, for all the phe- 
nomena connected with the existence of animals 
in their wild state. 
So far from attributing these original differ- 
