Origin of Species Variorum

↑ 1 blocks not present in 1859 1860 1869 1872; present in 1861 1866

In all organic beings the union of a male and female elemental cell seems occasionally to be necessary for the production of a new being.

→ organic beings sexual reproduction seems to be essentially similar. 1869

as far as is at present known, the germinal vesicle is the same. 1861 1866

as far as is at present known, the germinal vesicle is the same; 1872

→ With all, as far as is at present known, the germinal vesicle is the same; so that all organisms 1869

So that every individual organic being 1861 1866

so that all organisms 1872

→ on the principle of natural selection with divergence of character, it does not seem incredible that, 1861 1866 1869 1872

I should infer from analogy that probably all the organic beings which have ever lived on this earth have descended 1859 1860

→ such low and intermediate form, both animals and plants may have been developed; and, if we admit this, we must likewise admit that all the organic beings which have ever lived on this earth may be descended from some one 1869 1872

one 1859 1860

such low and intermediate form, both animals and plants may have been developed; and, if we admit this, we must admit that all the organic beings which have ever lived on this earth may have descended from some one 1861 1866

→ OMIT 1861 1866 1869 1872

breathed. 1859

breathed by the Creator. 1860

→ are 1869

the members are 1872

→ advanced by me 1860 1861 1866 1869 1872

entertained 1859

→ and by Mr. Wallace in the Linnean Journal, 1860 1861 1866 1869

on the origin of species, 1859

and by Mr. Wallace, 1872

→ on the origin of species are 1860 1861 1866 1869 1872

are 1859

and animals; or that the poison secreted by the

gall-fly

gallfly

produces monstrous growths on the wild rose or oak-tree. ↑

With

all,

all

→organic beings sexual reproduction seems to be essentially similar. →With all, as far as is at present known, the germinal vesicle is the same; so that all organisms

starts

start

from a common origin. If we look even to the two main divisions— namely, to the

animal

animal,

and vegetable kingdoms— certain low forms are so far intermediate in character that naturalists have disputed to which kingdom they should be

referred.

referred,

and, as

Professor Asa Gray has remarked, "the spores and other reproductive bodies of many of the lower

algæ

algæ?

may claim to have first a characteristically animal, and then an unequivocally vegetable existence."

Therefore

Therefore,

→on the principle of natural selection with divergence of character, it does not seem incredible that, from some →such low and intermediate form, both animals and plants may have been developed; and, if we admit this, we must likewise admit that all the organic beings which have ever lived on this earth may be descended from some one primordial

form,

into

which

life

was

first

→OMIT But this inference is chiefly grounded on analogy, and it is immaterial whether or not it be accepted. No doubt it is possible, as Mr. G. H. Lewes has urged, that at the first commencement of life many different forms were evolved; but if so, we may conclude that only a very few have left modified descendants. For, as I have recently remarked in regard to the members of each great

kingdom,

class,

such as the Vertebrata, Articulata, &c., we have distinct evidence in their embryological,

homologous,

homologous

and rudimentary structures, that within each

kingdom

class

all →are descended from a single progenitor.

When the views →advanced by me in this

volume

volume,

→and by Mr. Wallace in the Linnean Journal, or when analogous views →on the origin of species are generally admitted, we can dimly foresee that there will be a