Origin of Species Variorum

→ other, 1859

other , 1860 1861

other, 1866 1869

other , 1872

→ one grand natural system; 1859 1860 1861 1866

a few grand classes; 1869 1872

→ all fossils can 1859 1860 1861 1866

all extinct species can 1869

extinct species can all 1872

→ cannot be disputed. 1859 1860 1861 1866 1869

is certainly true; but as this statement has often been ignored or even denied, it may be well to make some remarks on this subject, and to give some instances. 1872

→ alone, 1859 1860 1861 1866 1869

species of the same class, 1872

→ With respect to the Vertebrata, whole pages could be filled with striking illustrations from our great palæontologist, Owen, showing how 1859 1860 1861

With respect to the vertebrata, whole pages could be filled with striking illustrations from our great palæontologist, Owen, showing how 1866

With respect to the vertebrata, whole pages could be filled with illustrations from Owen, showing how 1869

In the writings of Professor Owen we continually meet with the expression of generalised forms, as applied to 1872

→ between existing groups. 1859 1860 1861 1866 1869

the writings of Agassiz, of prophetic or synthetic types; and these terms imply that such forms are in fact intermediate or connecting links. 1872

→ the two 1859 1860 1861 1866 1869

two of the 1872

→ Owen has discovered 1859 1860 1861 1866 1869

OMIT 1872

→ that he 1859 1860 1861 1866 1869

have been disentombed that Owen 1872

→ of these two orders; 1859 1860 1861 1866

OMIT 1869 1872

periods,— a formation in one region often corresponding with a blank interval in the other,— and if in both regions the species have gone on slowly changing during the accumulation of the several formations and during the long intervals of time between them; in this

case

case,

the several formations in the two regions could be arranged in the same order, in accordance with the general succession of the

forms

form

of life, and the order would falsely appear to be strictly parallel; nevertheless the species would not

be all

all be

the same in the apparently corresponding stages in the two regions.

the

Affinities

Extinct

extinct

Species

each

→ other,

and

Living

living

forms. —

Forms.

Forms .

forms .—

Let us now look to the mutual affinities of extinct and living species.

All

They

fall

all

~~fall~~

fall

into →one grand natural system; and this fact is at once explained on the principle of descent. The more ancient any form is, the more, as a general rule, it differs from living forms. But, as Buckland long ago remarked, →all fossils can be classed either in still existing groups, or between them. That the extinct forms of life help to fill up the

~~wide~~

wide

intervals between existing genera, families, and orders, →cannot be disputed.

For if

we confine our attention either to the living or to the extinct →alone, the series is far less perfect than if we combine both into one general system. →With respect to the Vertebrata, whole pages could be filled with striking illustrations from our great palæontologist, Owen, showing how extinct

animals;

animals

and

fall

in →between existing groups. Cuvier ranked the Ruminants and Pachyderms, as →the two most distinct orders of

mammals:

mammals;

but →Owen has discovered so many fossil

links

links,

→that he has had to alter the whole

classification,