Origin of Species Variorum

→ but 1859 1860 1861 1866

in it, but 1869 1872

→ migration at some former period 1859 1860 1861

former migrations 1866 1869 1872

→ belonging either to a certain 1859 1860 1861

living during the same 1866 1869 1872

→ to a certain 1859 1860 1861

living within the same 1866 1869 1872

→ some organisms 1859 1860 1861

certain organisms 1866

species in certain classes 1869 1872

→ whilst others belonging to a different 1859 1860 1861

from each other, whilst others belonging to a different 1866

from each other, whilst others in a different 1869

from each other, whilst those in another 1872

→ order, or even only to a different family 1859 1860 1861

order, or only to a different family 1866

family 1869

section 1872

→ greatly. 1859 1860 1861

greatly from each other. 1866 1869 1872

→ On my 1859 1860 1861 1866

According to our 1869 1872

→ within the same quarter of the world, 1859 1860 1861 1866

OMIT 1869 1872

→ forms within each class have been 1859 1860 1861

forms within each class are 1866 1869

are 1872

→ and the more nearly any two forms are related in blood, the nearer they will generally stand to each other in time and space; 1859 1860 1861

and 1866 1869

OMIT 1872

fairly be attributed to our not having as yet discovered in an intermediate deposit

certain

the

forms which are

~~therein~~

therein

absent

absent,

→but which occur

both above

above

and below: so in space, it certainly is the general rule that the area inhabited by a single species, or by a group of species, is

continuous,

continuous;

and the exceptions, which are not rare, may, as I have attempted to show, be accounted for by →migration at some former period under different

circumstances,

conditions

through

occasional means of transport,

and

by the species having become extinct in the intermediate tracts. Both in time and space, species and groups of species have their points of maximum development. Groups of species, →belonging either to a certain period of time, or →to a certain area, are often characterised by trifling

features

characters

in common, as of sculpture or colour. In looking to the long succession of

past ages,

ages,

as in

~~now~~

now

looking to distant provinces throughout the world, we find that →some organisms differ

little

little,

→whilst others belonging to a different class, or

only in

a different →order, or even only to a different family of the same order, differ →greatly. In both time and space the

lowly organised

lower

members of each class generally change less than the

highly organised;

higher;

but there are in both cases marked exceptions to the rule. →On my

theory,

theory

these several relations throughout time and space are intelligible; for whether we look to the

allied forms

forms

of life which have changed during successive

ages,

ages

→within the same quarter of the world, or to those which have changed after having migrated into distant quarters, in both cases

they

the

→forms within each class have been connected by the same bond of ordinary generation; →and the more nearly any two forms are related in blood, the nearer they will generally stand to each other in time and space; in both cases the laws of variation have been the same, and modifications have been accumulated by the same

means

power

of natural selection.