Origin of Species Variorum

→ view 1859 1860 1861 1866

belief in the efficiency 1869 1872

→ having been largely efficient in the 1859 1860 1861 1866

carried on during a 1869 1872

→ view 1859 1860 1861 1866

belief in the former connection 1869 1872

→ having been formerly connected by continuous land 1859 1860 1861 1866

OMIT 1869 1872

→ the migration would probably have been more complete; and if modification be admitted, all the forms of life 1859 1860 1861 1866

it is probable that the various classes 1869 1872

→ equally modified, all the forms of life would have been more equally modified, in accordance with the paramount importance of the relation of organism to organism. 1866

equally modified, in accordance with the paramount importance of the relation of organism to organism. 1859 1860 1861

uniformly, and from the species having entered in a body their mutual relations would not have been much disturbed, and consequently they would have been modified either not at all or in a more equal manner. 1869

uniformly, and from the species having entered in a body their mutual relations would not have been much disturbed, and consequently they would either have not been modified, or all the species in a more equable manner. 1872

→ modified since their arrival, could 1859 1860 1861 1866

subsequently modified, 1869 1872

→ here give a single instance of one of the cases of difficulty. 1859 1860 1861 1866

specify one such difficult case. 1869

specify one difficult case. 1872

→ elsewhere. 1859 1860 1861 1866

elsewhere,— striking instances of which have been given by Dr. A. A. Gould in relation to the Pacific. 1869 1872

→ be, on my view, 1859 1860 1861 1866

be, according to our view, 1869

be 1872

→ occasionally crawl on and 1859 1860 1861 1866

sometimes 1869 1872

batrachians,

batrachians

and of terrestrial

mammals,

mammals

notwithstanding the presence of

aërial

aerial

aërial

bats,— the singular proportions of certain orders of plants,— herbaceous forms having been developed into trees, &c.,— seem to me to accord better with the →view of occasional means of

transport,

transport

→having been largely efficient in the long course of

time,

time

than with the →view of all

~~our~~

our

oceanic islands →having been formerly connected by continuous land with the nearest continent; for on this latter view →the migration would probably have been more complete; and if modification be admitted, all the forms of life would have

immigrated

been

more →equally modified, all the forms of life would have been more equally modified, in accordance with the paramount importance of the relation of organism to organism.

I do not deny that there are many and

grave

serious

difficulties in understanding how

many

several

of the inhabitants of the more remote islands, whether still retaining the same specific form or →modified since their arrival, could have reached their present homes. But the probability of

other

~~many~~

many

islands having

once existed

existed

as halting-places, of which not a wreck now remains, must not be

over- looked.

over-looked.

overlooked.

I will →here give a single instance of one of the cases of difficulty. Almost all oceanic islands, even the most isolated and smallest, are inhabited by land-shells, generally by endemic species, but sometimes by species found →elsewhere. Dr. Aug. A. Gould has given several interesting cases in regard to the land-shells of the islands of the Pacific. Now it is notorious that land-shells are

~~very~~

very

easily killed by

sea-water;

salt;

their eggs, at least such as I have tried, sink in

sea-water

sea-water,

and are

killed.

killed

~~it.~~

it.

Yet there must →be, on my view, some unknown, but

occasionally

highly

efficient means for their transportal. Would the just-hatched young →occasionally crawl on and adhere to the feet of birds roosting on the ground, and thus get transported? It occurred to me that land-shells, when hybernating and having a