Origin of Species Variorum

→ some part of 1859 1860 1861 1866

OMIT 1869 1872

→ the area inhabited by their progenitor. 1859 1860 1861 1866

some one area. 1869 1872

→ If it can be shown to be almost invariably the case, that a region, of which 1859 1860 1861 1866

When 1869

If, when 1872

→ its inhabitants are closely related to, or belong to the same genera with, 1866

its inhabitants are closely related to, or belong to the same genera with 1859 1860 1861

OMIT 1869 1872

→ of a second region, has probably received at some former period immigrants from this 1859 1860 1861 1866

inhabiting one region are different from those of 1869 1872

→ my theory will be strengthened; for we can clearly understand, on the principle of modification, why the inhabitants of a region should be related to those of another region, whence it has been stocked. 1859 1860 1861 1866

but are closely allied or belong to the same genera, if in all such cases it can be shown that there probably has been at some former period migration from the one region to the other, our general view will be much strengthened; for the explanation is obvious on the principle of descent with modification. 1869

though closely allied to them, it can be shown that migration from the one region to the other has probably occurred at some former period, our general view will be much strengthened; for the explanation is obvious on the principle of descent with modification. 1872

→ species in 1859 1860 1861 1866

the species of 1869 1872

→ (by substituting the word variety for species) 1859 1860 1861 1866

OMIT 1869 1872

→ in an ingenious paper 1859 1860 1861 1866

OMIT 1869 1872

→ in which he 1859 1860 1861 1866

who 1869 1872

→ species." 1859 1860 1866

species." 1861

species." And I now know that he attributes this coincidence to descent with modification. 1869

species." And it is now well known that he attributes this coincidence to descent with modification. 1872

→ previous remarks on "single and 1859 1860 1866

previous remarks on "single and 1861

discussion on "single and 1869

question of single or 1872

→ creation" do not directly bear on another 1859 1860 1866

creation" do not directly bear on another 1861

creation" does not directly bear on another 1869

creation differs from another though 1872

progenitor, can have

migrated,

migrated

undergoing

(undergoing

modification during →some part of their

migration,

migration)

from →the area inhabited by their progenitor. →If it can be shown to be almost invariably the case, that a region, of which most of →its inhabitants are closely related to, or belong to the same genera with, the species →of a second region, has probably received at some former period immigrants from this

another

other

region, →my theory will be strengthened; for we can clearly understand, on the principle of modification, why the inhabitants of a region should be related to those of another region, whence it has been stocked. A volcanic island, for instance, upheaved and formed at the distance of a few hundreds of miles from a continent, would probably receive from it in the course of time a few colonists, and their descendants, though modified, would still be

~~plainly~~

plainly

related by inheritance to the inhabitants of

the

that

continent. Cases of this nature are common, and are, as we shall hereafter

~~more fully~~

more fully

see, inexplicable on the theory of independent creation. This view of the relation of →species in one region to those

another, does not differ much →(by substituting the word variety for species) from that

~~lately~~

lately

advanced →in an ingenious paper by Mr. Wallace, →in which he

concludes,

concludes

that

"every

species has come into existence coincident both in space and time with a pre-existing closely allied →species." And I now know from correspondence, that this coincidence he attributes to generation with modification.

The →previous remarks on "single and multiple centres of →creation" do not directly bear on another allied question,—

namely

namely,

whether all the individuals of the same species

are

have

descended from a single pair, or single hermaphrodite, or whether, as some authors suppose, from many individuals simultaneously created. With

those

....

organic beings which never

intercross,

intercross

(if

such