Origin of Species Variorum

→ former migrations 1866 1869 1872

migration at some former period 1859 1860 1861

→ living during the same 1866 1869 1872

belonging either to a certain 1859 1860 1861

→ living within the same 1866 1869 1872

to a certain 1859 1860 1861

→ species in certain classes 1869 1872

some organisms 1859 1860 1861

certain organisms 1866

→ from each other, whilst others in a different 1869

whilst others belonging to a different 1859 1860 1861

from each other, whilst others belonging to a different 1866

from each other, whilst those in another 1872

→ family 1869

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

order, or only to a different family 1866

section 1872

→ greatly from each other. 1866 1869 1872

greatly. 1859 1860 1861

→ According to our 1869 1872

On my 1859 1860 1861 1866

→ OMIT 1869 1872

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

→ forms within each class are 1866 1869

forms within each class have been 1859 1860 1861

are 1872

→ and 1866 1869

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

OMIT 1872

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 →former migrations under different

conditions

circumstances,

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, →living during the same period of time, or →living within the same area, are often characterised by trifling

characters

features

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

ages,

past ages,

as in

~~now~~

now

looking to distant provinces throughout the world, we find that →species in certain classes differ

little,

little

→from each other, whilst others in a different class, or

only in

a different →family of the same order, differ →greatly from each other. In both time and space the

lower

lowly organised

members of each class generally change less than the

higher;

highly organised;

but there are in both cases marked exceptions to the rule. →According to our

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,

→OMIT or to those which have changed after having migrated into distant quarters, in both cases

they

the

→forms within each class are connected by the same bond of ordinary generation; →and