→ like 1859 1860 1861 |
into it like 1866 1869 1872 |
|
↑ 1 blocks not present in 1860 1861 1866 1869 1872; present in 1859 |
Even in so extreme a case as this, if the supply of insects were constant, and if better adapted competitors did not already exist in the country, I can see no difficulty in a race of bears being rendered, by natural selection, more and more aquatic in their structure and habits, with larger and larger mouths, till a creature was produced as monstrous as a whale.
|
|
→ of a species 1859 1860 1861 1866 1869 |
OMIT 1872 |
|
→ of their own 1860 1861 1866 1869 |
both of their own 1859 |
proper to their 1872 |
|
→ on my theory, 1859 1860 1861 1866 |
OMIT 1869 1872 |
|
→
(
Colaptes campestris
) which has two toes before and two behind, a long pointed tongue, stiff pointed tail feathers, but not so stiff as
1861 |
which in every essential part of its organisation, even in its colouring, 1859 1860 |
(
Colaptes campestris
) which has two toes before and two behind, a long pointed tongue, stiff pointed tail-feathers, but not so stiff as
1866 |
(
Colaptes campestris
) which has two toes before and two behind, a long pointed tongue, pointed tail-feathers, sufficiently stiff to support the bird in a vertical position on a post, but not so stiff as
1869 |
(Colaptes campestris) which has two toes before and two behind, a long pointed tongue, pointed tail-feathers, sufficiently stiff to support the bird in a vertical position on a post, but not so stiff as 1872 |
|
→ typical woodpeckers (yet I have seen it use its tail when alighting vertically on a post), and a straight strong beak. 1861 1866 |
harsh tone of its voice, and undulatory flight, told me plainly of its close blood-relationship to our common species; yet it is a woodpecker which never climbs a tree! 1859 1860 |
typical woodpeckers, and a straight strong beak. 1869 1872 |
|