Origin of Species Variorum

→ be generally 1859 1860 1861 1866 1869

is in most cases 1872

→ in the case of 1859 1860 1861 1866 1869

with 1872

→ or becoming 1859 1860 1861 1866

that is, they become 1869 1872

→ trees 1859 1860 1861 1866

the same species 1869 1872

→ growing 1859 1860 1861 1869 1872

of the same species growing 1866

→ in this country to possess 1859 1860 1861 1866 1869

to possess in this country 1872

→ England. 1859 1860 1861

England; and I could give other cases. 1866 1869 1872

→ within historical times having largely extended 1859 1860 1861 1866 1869

having largely extended, within historical times, 1872

→ homes. 1859 1860 1861

homes, so as to be better fitted for them than they were at first. 1866 1869 1872

→ we may infer 1861 1866 1869 1872

I believe 1859 1860

→ bred 1859 1860 1861 1866

because they bred 1869 1872

more than, by adaptation to particular climates. But whether or not

this

the

adaptation →be generally very close, we have

evidence

evidence,

→in the case of some few plants, of their becoming, to a certain extent, naturally habituated to different

temperatures;

temperatures,

→or becoming

acclimatised;

acclimatised:

thus the pines and rhododendrons, raised from seed collected by Dr. Hooker from →trees →growing at different heights on the Himalaya, were found →in this country to possess different constitutional powers of resisting cold. Mr. Thwaites informs me that he has observed similar facts in

Ceylon;

Ceylon,

~~and~~

and

analogous observations have been made by Mr.H.

Watson on European species of plants brought from the Azores to →England. In regard to animals, several authentic

instances

cases

could be

adduced

given

of species →within historical times having largely extended their range from warmer to cooler latitudes, and conversely; but we do not positively know that these animals were strictly adapted to their native climate,

but

though

yet

in all

ordi- nary

ordinary

cases we assume such to be the case; nor do we know that they have subsequently become

specially acclimatised

acclimatised

to their new →homes.

As →we may infer that our domestic animals were originally chosen by uncivilised man because they were useful and →bred readily under confinement, and not because they were subsequently found capable of far-extended transportation,

I think

....

the common and extraordinary capacity in our domestic animals of not only withstanding the most different

climates

climates,

but of being perfectly fertile (a far severer test) under them, may be used as an argument that a large proportion of other

animals,

animals

now in a state of

nature,

nature

could easily be brought to bear widely different climates. We must not, however, push the foregoing argument too far, on account of the probable origin of some of our domestic animals from several wild

stocks;

stocks:

the blood, for instance, of a tropical