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I can see no reason to doubt that 1859 1860 1861 1866
OMIT 1869 1872

their native countries. 1859 1860 1861 1866
any country which they inhabited. 1869 1872

by 1859 1860 1861
in England by 1866 1869 1872

advanced— 1859 1860 1861
advanced — 1866 1869
advanced, as proving that acclimatisation cannot be effected, 1872

was— as proving that acclimatisation cannot be effected! 1859 1860 1861
was — as proving that acclimatisation cannot be effected! 1866 1869
was! 1872

appeared to be 1859 1860 1861
were 1866 1869
are 1872

others. 1859 1860 1861
others; and of this fact I have myself observed a striking instance. 1866
others; and of this fact I have myself observed striking instances. 1869 1872

in
transporting
transposing
animals from one district to
another.
another;
And as
for
as it
it
is not likely that man should have succeeded in selecting so many breeds and sub-breeds with constitutions specially fitted for their own
districts,
districts:
the result must, I think, be due to habit. On the other
hand
hand,
I can see no reason to doubt that natural
selec- tion
selection
would inevitably
will continually
tend to preserve those individuals which
were
are
born with constitutions best adapted to their native countries. In treatises on many kinds of cultivated plants, certain varieties are said to withstand certain climates better than
others;
others:
this is
very
very
strikingly shown in works on
fruit-trees
fruit trees
published in the United States, in which certain varieties are habitually recommended for the
northern
northern,
and others for the southern
states;
States;
and as most of these varieties are of recent origin, they cannot owe their constitutional differences to habit. The case of the Jerusalem artichoke, which is never propagated by seed, and of which consequently new varieties have not been produced, has even been advanced— for it is now as tender as ever it was— as proving that acclimatisation cannot be effected! The
case
case,
also, of the kidney-bean has been often cited for a similar purpose, and with much greater weight; but until some one will sow, during a score of generations, his kidney-beans so early that a very large proportion
I are
are
destroyed by frost, and then collect seed from the few survivors, with care to prevent accidental crosses, and then again get seed from these seedlings, with the same precautions, the experiment cannot be said to have been
even
even
tried. Nor let it be supposed that
no
no
differences in the constitution of seedling kidney-beans
never
ever
appear, for an account has been published how much more hardy some seedlings appeared to be than others.
On the whole,
I think
I think
we may conclude that habit,