Origin of Species Variorum

→ there should be a correlation, in the presence of 1859 1860 1861 1866

where very closely allied or representative species exist, there should almost always exist some 1869

some 1872

→ of varieties, of doubtful species, and of distinct but representative species. 1859 1860 1861 1866

will almost always there be found. 1872

OMIT 1869

→ 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

→there should be a correlation, in the presence of identical

species.

species

species,

→of varieties, of doubtful species, and of distinct but representative species.

As the late Edward Forbes often insisted, there is a striking parallelism in the laws of life throughout time and

space;

space:

the laws governing the succession of forms in past times being nearly the same with those governing at the present time the differences in different areas. We see this in many facts. The endurance of each species and group of species is continuous in time; for the

apparent exceptions

exceptions

to the rule are so few, that they may 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