Origin of Species Variorum

→ OMIT 1866 1869 1872

monstrosities, or such 1861

→ OMIT 1866 1869 1872

Monsters are very apt to be sterile; and 1861

→ OMIT 1866 1869 1872

at least with animals, 1861

→ resemble 1869 1872

are comparable with 1866

→ like that 1866 1869

and if any wild species 1872

→ tapir or elephant. Now, if any wild species of the pig-genus 1869

tapir or elephant. Now, if any wild species of the piggenus 1866

same genus 1872

→ in like manner had suddenly 1869

had 1866 1872

→ to find, after diligent search, 1869 1872

after diligent search, to find, in nearly allied forms, 1866

→ in nearly allied forms, and these alone would bear on the question. 1869

resembling each other. 1866

in nearly allied forms, and these alone bear on the question. 1872

→ their preservation would depend on unusually favourable circumstances. 1869 1872

they must be crossed with the ordinary form, and their character. will be transmitted in a modified state. 1866

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

If perpetuated in this crossed state, their preservation will be almost necessarily due to the modification being in some way beneficial to the animal under its then existing conditions of life; so that, even in this case, natural selection will come into play.

→ they 1869

their abnormal character 1872

→ lose their abnormal character. 1869

be lost. 1872

supposed not to be

inherited;

inherited:

but who can say that the dwarfed condition of shells in the brackish waters of the Baltic, or dwarfed plants on Alpine summits, or the thicker fur of an animal from far northwards, would not in some cases be inherited for at least

some

few generations? and in this case I presume that the form would be called a variety.

It may

perhaps

....

be doubted whether →OMIT sudden and

considerable

great

deviations of structure

such as

we occasionally see in our domestic productions, more especially with plants, are ever permanently propagated in a state of nature. →OMIT

almost

Almost

every part of every organic

being,

being

→OMIT is so beautifully related to its complex conditions of life that it seems as improbable that any part should have been suddenly produced perfect, as that a complex machine should have been invented by man in a perfect state. Under domestication monstrosities

sometimes

often

occur which →resemble normal

structures.

~~widely~~

~~different~~

~~animals.~~

Thus pigs have

occasionally

often

been born with a sort of

proboscis,

proboscis

→like that of the →tapir or elephant. Now, if any wild species of the pig-genus had naturally possessed a proboscis, it might have been argued that this →in like manner had suddenly

suddenly appeared

appeared

as a monstrosity; but I have as yet

failed,

failed

→to find, after diligent search, cases of monstrosities

and of

resembling

normal structures →in nearly allied forms, and these alone would bear on the question. If monstrous forms of this kind ever do appear in a state of nature and are capable of

reproduction

propagation

(which is not always the case), as they occur rarely and singly, →their preservation would depend on unusually favourable circumstances. ↑ They would, also, during the first and succeeding generations cross with the ordinary form, and thus →they would almost inevitably →lose their abnormal character. But I shall have to