Origin of Species Variorum

→ as we see 1859 1860 1861 1866

we see 1869

OMIT 1872

→ that 1859 1860 1861 1866 1869

we see that 1872

→ and in 1859 1860 1861 1866

New Zealand, and to 1869 1872

→ to a certain extent 1859 1860 1861 1866

OMIT 1869 1872

→ the northern hemisphere, 1866 1869 1872

Europe, 1859 1860 1861

→ Before the Glacial period, no doubt 1866

Something of the same kind must have occurred on 1859 1860 1861

Before the last great Glacial period, no doubt 1869 1872

→ OMIT 1866 1869 1872

no doubt before the Glacial period they 1859 1860 1861

→ those which have become naturalised there; 1866

the naturalised; 1859 1860 1861

those which have become naturalised; 1869 1872

→ if the natives have not been actually exterminated, their numbers have been greatly reduced, and 1859 1860 1861 1866

OMIT 1869 1872

→ the intertropical mountains before the Glacial period must have been completely isolated; and I believe that the inhabitants of these islands on the land 1866

the intertropical mountains before the Glacial period must have been completely isolated; and I believe that the productions of these islands on the land 1859 1860 1861

their inhabitants have 1869 1872

→ yielded to continental forms lately 1866

lately yielded to continental forms, 1859 1860 1861

yielded and are still yielding to continental forms 1869 1872

↑ 2 blocks not present in 1859 1860 1861 1866; present in 1869 1872

The same principles apply to the distribution of terrestrial animals and of marine productions, in the northern and southern temperate zones, and on the intertropical mountains. When during the height of the Glacial period the ocean-currents were widely different to what they now are, some of the inhabitants of the temperate seas might have reached the equator; of these a few would perhaps at once be able to migrate southward, by keeping to the cooler currents, whilst others might remain and survive in the cooler depths, until the southern hemisphere was in its turn subjected to a glacial climate and permitted of their further progress; in nearly the same manner as, according to Forbes, isolated spaces inhabited by Arctic productions exist to the present day in the deeper parts of the temperate seas.

→ difficulties 1866 1869

difficulties are removed on the view here given 1859 1860 1861

the difficulties 1872

→ allied 1859 1860 1861 1866

identical and allied 1869 1872

→ live 1859 1860 1861 1866

now live so widely separated 1869 1872

Just in

the same manner →as we see at the present day, →that very many European productions cover the ground in La Plata, →and in a lesser degree in Australia, and have →to a certain extent beaten the natives; whereas extremely few southern forms have become naturalised in any part of →the northern hemisphere, though hides, wool, and other objects likely to carry seeds have been largely imported into Europe during the last two or three centuries from La Plata, and during the last

forty

thirty

fifty

forty

years from Australia. The Neilgherrie mountains in India, however, offer a partial exception; for here, as I hear from Dr. Hooker, Australian forms are rapidly sowing themselves and becoming naturalised. →Before the Glacial period, no doubt the intertropical

mountains:

mountains

→OMIT were stocked with endemic Alpine forms; but these have almost

everywhere

every-where

largely

....

yielded to the more dominant forms, generated in the larger areas and more efficient workshops of the north. In many islands the native productions are nearly

equalled

equalled,

or even

outnumbered

outnumbered,

out-numbered,

by →those which have become naturalised there; and →if the natives have not been actually exterminated, their numbers have been greatly reduced, and this is the first stage towards

their extinction.

Mountains

are

islands

on the

land,

land;

and →the intertropical mountains before the Glacial period must have been completely isolated; and I believe that the inhabitants of these islands on the land

yielded

have yielded

to those produced within the larger areas of the north, just in the same way as the

inhabitants

productions

of real islands have everywhere →yielded to continental forms lately naturalised

through

there through

mans

man's

agency. ↑

I am