Origin of Species Variorum

→ extinct and very 1859 1860

other extinct and 1861 1866

extinct and 1869 1872

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

OMIT 1869 1872

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

each successive period in the worlds 1869

the world at each successive period in its 1872

→ of nature; 1859 1860

of nature, 1861 1866 1869

and their structure has generally become more specialised; 1872

→ this 1859 1860 1872

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

their structure has generally become more specialised; and this 1869

→ that vague yet illdefined sentiment, felt by 1860

that vague yet ill-defined sentiment, felt by 1859

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

the common belief held by so 1869 1872

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

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.

→ it to be, 1859 1860 1861 1866

OMIT 1869 1872

→ produced by the laws 1859 1860 1861 1866

the products 1869 1872

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

and the Survival of the Fittest. 1869 1872

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

other

many

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

~~more~~

closely

allied;

allied

→to each other, than are those of remote formations; for

they

the

~~forms~~

forms

are

~~more~~

closely linked together by

generation.

~~can~~

~~clearly~~

~~see~~

~~why~~

~~the~~

~~remains~~

~~intermediate~~

~~formation~~

~~are~~

~~intermediate~~

~~character.~~

The inhabitants of →each successive period in the world's history

must have

have

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

scale,

scale

→of nature; and →this may account for →that vague yet illdefined sentiment, felt by many palæontologists, that organisation on the whole has progressed. ↑ 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.

If then the geological record be as imperfect as

many

believe,

believe

→it to be, 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, →produced by the laws of

Variation

variation

→still acting round us, and preserved by Natural Selection.