Origin of Species Variorum

→ of species, which, though distinct, belong to genera exclusively confined to the south, is a 1869 1872

is, on my theory of descent with modification, a far 1859 1860 1861

is, on the theory of descent with modification, a far 1866

→ OMIT 1869 1872

peculiar and very 1859 1860 1861 1866

→ belonging to the same genera have 1869 1872

have 1859 1860 1861 1866

→ It may be 1869 1872

I 1859 1860 1861 1866

→ had been already 1869 1872

were 1859 1860 1861 1866

→ Thus 1869 1872

By these means, as I believe, 1859 1860 1861 1866

→ and New Zealand, might have 1869

New Zealand have 1859

New Zealand, have 1860 1861

and New Zealand, 1866

and New Zealand, may have 1872

→ throughout the world on 1869 1872

on 1859 1860 1861 1866

↑ 1 blocks not present in 1869 1872; present in 1859 1860 1861 1866

I believe that the world has recently felt one of his great cycles of change; and that on this view, combined with modification through natural selection, a multitude of facts in the present distribution both of the same and of allied forms of life can be explained.

→ OMIT 1869 1872

may be said to 1859 1860 1861 1866

→ afterwards from 1869

from 1859 1860 1861 1866

during another from 1872

→ in both cases have reached 1869 1872

to have crossed at 1859 1860 1861 1866

→ the stream of life has 1869 1872

to have 1859 1860 1861 1866

at these and other distant points of the southern hemisphere, →of species, which, though distinct, belong to genera exclusively confined to the south, is a more remarkable

case

difficulty.

For

some

of these species are so distinct, that we cannot suppose that there has been time since the commencement of the

Glacial

last Glacial

period for their

migration,

migration

and

for their

....

subsequent modification to the necessary degree. The facts seem to

~~me to~~

me to

indicate that →OMIT distinct species →belonging to the same genera have migrated in radiating lines from

some

common centre; and I am inclined to look in the southern, as in the northern hemisphere, to a former and warmer period, before the commencement of the

last Glacial

Glacial

period, when the

antarctic

Antarctic

lands, now covered with ice, supported a highly peculiar and isolated flora. →It may be

suspect

suspected

that before this flora was exterminated

during

the

Glacial

last Glacial

epoch, a few forms →had been already widely dispersed to various points of the southern hemisphere by occasional means of transport, and by the

aid

aid,

as halting-places, of

existing and

....

now sunken

islands,

and

perhaps

the

commencement

the

Glacial

period,

icebergs.

→Thus the southern shores of America, Australia, →and New Zealand, might have

became

become

slightly tinted by the same peculiar forms of

vegetable

....

life.

Sir C. Lyell in a striking passage has speculated, in language almost identical with mine, on the effects of great alternations of climate →throughout the world on geographical distribution. And we have now seen that Mr.

Croll's

Crolls

conclusion that successive Glacial periods in the one hemisphere

coincide

coincided

with warmer periods in the opposite hemisphere, together with the admission of the slow modification of species, explains a multitude of facts in the distribution of the same and of the allied forms of life in all parts of the globe. ↑ The living waters →OMIT have flowed during

one short

one

certain

period

periods

from the north and →afterwards from the south, and →in both cases have reached the

equator:

equator;

but →the stream of life has