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1859
1860
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1869
1872

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1860
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1869
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during changes of level it is obvious that islands separated 1859 1860 1861 1866
islands separated 1869
the islands which are separated from each other or from the mainland 1872

by 1859 1860 1861 1866 1872
from each other or from the mainland by 1869

to the mainland than 1859 1860 1861 1866
than 1869
than the 1872

the frequent relation 1859 1860 1861 1866
how it is that a relation exists 1869 1872

and 1859 1860 1861 1866
separating two mammalian faunas, and 1869 1872

affinity of the mammalian inhabitants of islands with those of a neighbouring continent,— an inexplicable relation 1859 1860 1861 1866
their affinity,— a relation which is quite inexplicable 1869 1872

All the foregoing remarks on 1859 1860 1861 1866
The foregoing statements in regard to 1869 1872

richness in endemic forms in particular classes or sections of classes,— 1859 1860 1861 1866
species, with a large proportion consisting of endemic forms— the members of certain groups, and not of other groups in the same class, having been modified— 1869
species, with a large proportion consisting of endemic forms— the members of certain groups, but not those of other groups in the same class, having been modified— 1872

whole groups, 1859 1860 1861 1866
certain whole orders, 1869 1872

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

on the lapse of time, and as during changes of level it is obvious that islands separated by shallow
channels,
channels
are more likely to have been continuously united within a recent period to the mainland than islands separated by deeper channels, we can understand the frequent relation between the depth of the sea and the degree of affinity of the mammalian inhabitants of islands with those of a neighbouring continent,— an inexplicable relation on the
theory
view
of independent acts of creation.
All the foregoing remarks on the inhabitants of oceanic islands,— namely, the
fewness
scarcity
of
kinds,—
kinds—
kinds—
the richness in endemic forms in particular classes or sections of classes,— the absence of whole groups, as of
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, in accordance with the paramount importance of the relation of organism to organism.
I do not deny that there are many and
serious
grave
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.
overlooked.
over- looked.