See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1859
1860
1866
1869
1872

here alluded to them 1859 1860 1861 1866
made these remarks 1869 1872

we 1859 1860 1861 1866
from one or a few parent-stocks, we 1869 1872

and individuals with slightly different constitutions would succeed best under different
climates;
climates.
and
....
there
....
is
....
reason
....
to
....
believe
....
that
....
constitution
....
and
....
colour
....
are
....
correlated.
....
A good
observer,
observer
also,
....
states that in cattle susceptibility to the attacks of flies is correlated with colour, as is the liability to be poisoned by certain plants; so that
colour
even colour
would be thus subjected to the action of natural selection. But we are far too ignorant to speculate on the relative importance of the several known and unknown
causes
laws
of variation; and I have here alluded to them only to show that, if we are unable to account for the characteristic differences of our
several domestic
domestic
breeds, which nevertheless
are
we
generally
admitted
admit
to have arisen through ordinary
generation
generation,
we ought not to lay too much stress on our ignorance of the precise cause of the slight analogous differences between
true species.
species.
I might have adduced for this same purpose the differences between the races of man, which are so strongly