Origin of Species Variorum

→ those inhabitants of 1859 1860 1861 1866

the species which inhabit 1869 1872

→ (laying on one side for the moment the endemic species, which cannot be here fairly included, as we are considering how they have come to be modified since their arrival), 1859 1860 1861 1866

OMIT 1869 1872

→ a considerable amount of difference 1859 1860 1861 1866

that they differ considerably 1869 1872

→ view of the islands having 1859 1860 1861 1866

islands have 1869 1872

→ island. 1859 1860 1861 1866

island, though all proceeding from the same general source. 1869 1872

→ settled on any one or more 1859 1860 1861 1866

first settled on one 1869 1872

→ more perfectly 1859 1860 1861 1866

best fitted for it 1869 1872

→ distinct plants in one island than in another, and it 1859 1860 1861 1866

somewhat different species in the different islands, and 1869 1872

→ and 1859 1860 1861 1866

throughout a continent and 1869 1872

→ formed in the separate islands have not quickly spread 1859 1860 1861 1866

after being formed in any one island, did not quickly spread 1869

after being formed in any one island, did not spread quickly 1872

be disputed that the nature of the other

inhabitants,

species

inhabitants

with which each has to compete, is

least as important, and generally a far more important element of success. Now if we look to →those inhabitants of the Galapagos Archipelago

and

which

are

likewise found

found

in other parts of the

world,

world

→(laying on one side for the moment the endemic species, which cannot be here fairly included, as we are considering how they have come to be modified since their arrival), we find →a considerable amount of difference in the several islands. This difference might indeed have been expected

the →view of the islands having been stocked by occasional means of transport— a seed, for instance, of one plant having been brought to one island, and that of another

plant

plant,

to another →island.

Hence,

Hence

when in former times an immigrant →settled on any one or more of the islands, or when it subsequently spread from one

~~island~~

island

to another, it would undoubtedly be exposed to different conditions

~~of life~~

of life

in the different islands, for it would have to compete with

a different

set

organisms;

plant,

for instance, would find the

~~best-fitted~~

best-fitted

ground →more perfectly occupied by →distinct plants in one island than in another, and it would be exposed to the attacks of somewhat different enemies. If then it varied, natural selection would probably favour different varieties in the different islands. Some species, however, might spread and yet retain the same character throughout the group, just as we see

~~on continents~~

on continents

some species spreading widely →and remaining the same.

The really surprising fact in this case of the Galapagos Archipelago, and in a lesser degree in some analogous

cases,

instances,

is that

each

the

new species →formed in the separate islands have not quickly spread to the other islands. But the islands, though in sight of each other, are separated by deep arms of the sea, in most cases