| → OMIT 1869 |
| of such species, 1859 1860 1861 1866 |
|
| → OMIT 1869 |
| of all kinds 1859 1860 1861 1866 |
|
| → of a brassy colour, because it was intended to live near the 1869 |
| with bright colours for a warm 1859 1860 1861 1866 |
|
| → brassy through variation as soon as it reached the sea-coast. 1869 |
| bright-coloured by variation when it ranged into warmer or shallower waters. 1859 1860 1861 1866 |
|
| → definite action of the conditions 1869 1872 |
| conditions 1859 1860 1861 1866 |
|
| → further north they 1869 1872 |
| more severe the climate is under which they have 1859 1860 1861 1866 |
|
| → similar varieties 1869 1872 |
| the same variety 1859 1860 1861 1866 |
|
| → from the same species under external 1869 1872 |
| under 1859 1860 1861 1866 |
|
| → external 1869 1872 |
| species under the same 1859 1860 |
| species under apparently the same 1861 1866 |
|
| ↑ 1 blocks not present in 1869 1872; present in 1859 1860 1861 1866 |
| Such facts show how indirectly the conditions of life must
act.
|
|
|
into the
of
other species, often acquiring in a
slight degree some of
→OMIT
accords with
view that species
→OMIT
are only well-marked and permanent varieties. Thus the species of shells which are confined to tropical and shallow seas are generally brighter-coloured than those confined to cold and deeper seas. The birds which are confined to continents are, according to Mr. Gould, brighter-coloured than those of islands. The insect-species confined to sea-coasts, as every collector knows, are often brassy or lurid. Plants which live exclusively on the sea-side are very apt to have fleshy leaves. He who believes in the creation of each species, will have to say that this
for instance, was created
→of a brassy colour, because it was intended to live near the
but that this other
became
→brassy through variation as soon as it reached the sea-coast.
|
|
| When a variation is of the
use to
being, we cannot tell how much
to attribute to the accumulative action of natural selection, and how much to the
→definite action of the conditions
of life. Thus, it is well known to furriers that animals of the same species have thicker and better fur the
→further north they
but who can tell how much of this difference may be due to the warmest-clad individuals having been favoured and preserved during many generations, and how much to the
action of the severe climate? for it would appear that climate has some direct action on the hair of our domestic quadrupeds. |
|
| Instances could be given of
→similar varieties
being produced
→from the same species under external
conditions of life as different as can well be conceived; and, on the other hand, of
varieties being produced
the same
→external
conditions. ↑
Again, innumerable instances are known to
|
