Origin of Species Variorum

→ on the common 1859 1860 1861 1866 1869

in accordance with the old 1872

→ OMIT 1861 1866

but, as Schiödte and others have remarked, 1859 1860

OMIT 1869 1872

→ if we look at 1861 1866

OMIT 1869 1872

and the cave-insects of 1859 1860

→ whole faunas; and with respect to the insects alone, Schiödte has remarked, " 1861 1866

OMIT 1869 1872

continents are not more closely allied than might have been anticipated from the general resemblance of the other inhabitants of North America and Europe. 1859 1860

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

This is certainly not the case if we look at the two whole faunas; and with respect to the insects alone, Schiödte has remarked,

→ in most cases ordinary 1861 1866 1869 1872

ordinary 1859 1860

→ "We accordingly look upon the subterranean faunas as small ramifications which have penetrated into the earth from the geographically limited faunas of the adjacent tracts, and which, as they extended themselves into darkness, have been accommodated to surrounding circumstances. Animals 1861 1866 1869 1872

"animals 1859 1860

→ darkness, and whose formation is quite peculiar." 1861 1866 1869 1872

darkness." 1859 1860

It is difficult to imagine conditions of life more similar than deep limestone caverns under a nearly similar climate; so

that,

that

→on the common view of the blind animals having been separately created for the American and European caverns,

very close

similarity in their organisation and affinities might have been

expected;

expected.

→OMIT

this

~~This~~

This

not

~~certainly not~~

certainly not

~~the~~

the

case,

~~case~~

case

→if we look at

~~the~~

the

~~two~~

two

→whole faunas; and with respect to the insects alone, Schiödte has remarked, " ↑

"We

are accordingly prevented from considering the entire phenomenon in any other light than something purely local, and the similarity which is exhibited in a few forms between the Mammoth cave (in Kentucky) and the caves in Carniola, otherwise than as a very plain expression of that analogy which subsists generally between the fauna of Europe and of North America." On my view we must suppose that American animals, having →in most cases ordinary powers of vision, slowly migrated by successive generations from the outer world into the deeper and deeper recesses of the Kentucky caves, as did European animals into the caves of Europe. We have some evidence of this gradation of habit; for, as Schiödte remarks, →"We accordingly look upon the subterranean faunas as small ramifications which have penetrated into the earth from the geographically limited faunas of the adjacent tracts, and which, as they extended themselves into darkness, have been accommodated to surrounding circumstances. Animals not far remote from ordinary forms, prepare the transition from light to darkness. Next follow those that are constructed for twilight; and, last of all, those destined for total →darkness, and whose formation is quite peculiar."