Origin of Species Variorum

→ extinct and 1869 1872

extinct and very 1859 1860

other extinct and 1861 1866

→ OMIT 1869 1872

to each other, than are those of remote formations; 1859 1860 1861 1866

→ each successive period in the worlds 1869

each successive period in the world's 1859 1860 1861 1866

the world at each successive period in its 1872

→ of nature, 1861 1866 1869

of nature; 1859 1860

and their structure has generally become more specialised; 1872

→ their structure has generally become more specialised; and this 1869

this 1859 1860 1872

their structure will generally have become more specialised; and this 1861 1866

→ the common belief held by so 1869 1872

that vague yet ill-defined sentiment, felt by 1859

that vague yet illdefined sentiment, felt by 1860

that ill-defined yet common sentiment, felt by 1861 1866

↑ 2 blocks not present in 1869 1872; present in 1859 1860 1861 1866

If it should hereafter be proved that ancient animals resemble to a certain extent the embryos of more recent animals of the same class, the fact will be intelligible. The succession of the same types of structure within the same areas during the later geological periods ceases to be mysterious, and is simply explained by inheritance.

→ OMIT 1869 1872

it to be, 1859 1860 1861 1866

→ the products 1869 1872

produced by the laws 1859 1860 1861 1866

→ and the Survival of the Fittest. 1869 1872

still acting round us, and preserved by Natural Selection. 1859 1860 1861 1866

apparently,

....

displays characters

stands

in some degree intermediate between groups now distinct; for the more ancient a form is, the more nearly it will be related to, and consequently resemble, the common progenitor of groups, since

be- come

become

widely divergent. Extinct forms are seldom directly intermediate between existing forms; but are intermediate only by a long and circuitous course through

many

other

→extinct and different forms. We can clearly see why the organic remains of closely consecutive formations are

....

closely

allied

allied;

→OMIT for

the

they

forms

....

are

....

closely linked together by

generation:

can

clearly

see

why

the

remains

intermediate

formation

are

intermediate

character.

The inhabitants of →each successive period in the worlds history

have

must have

beaten their predecessors in the race for life, and are, in so far, higher in the

scale,

scale

→of nature, and →their structure has generally become more specialised; and this may account for →the common belief held by so many palæontologists, that organisation on the whole has progressed. Extinct and ancient animals resemble to a certain extent the embryos of the more recent animals belonging to the same classes, and this wonderful fact receives a simple explanation according to our views. The succession of the same types of structure within the same areas during the later geological periods ceases to be mysterious, and is intelligible on the principle of inheritance. ↑

If then the geological record be as imperfect as

many

believe

believe,

→OMIT and it may at least be asserted that the record cannot be proved to be much more perfect, the main objections to the theory of natural selection are greatly diminished or disappear. On the other hand, all the chief laws of palæontology plainly proclaim, as it seems to me, that species have been produced by ordinary generation: old forms having been supplanted by new and improved forms of life, →the products of

variation

Variation

→and the Survival of the Fittest.