See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1860
1861
1866
1869
1872

modified. 1859 1860
modified in relation to its new habits of life; whereas the woodpecker of La Plata has its structure only slightly modified. 1861 1866
modified in relation to its new habits of life; whereas the woodpecker of La Plata has had its structure only slightly modified. 1869 1872

2 blocks not present in 1859 1860 1861; present in 1866 1869 1872
In the case of the water-ouzel, the acutest observer by examining its dead body would never have suspected its sub-aquatic habits; yet this anomalous member of the terrestrial thrush family wholly subsists by diving,—grasping the stones with its feet, and using its wings under water. All the members of the great order of Hymenoptera are terrestrial, excepting the genus Proctotrupes, which Sir John Lubbock has recently discovered to be aquatic in its habits; it often enters the water and dives about by the use not of its legs but of its wings, and remains as long as four hours beneath the surface; yet not the least modification in its structure can be detected in accordance with such abnormal habits.

other hand, 1859 1860
case of the waterouzel, 1861

of the water-ouzel 1859 1860
OMIT 1861

of 1859 1860 1861
not furnished with membrane, of the 1866 1869
not furnished with membrane of the 1872

yet the water-hen 1859 1860
— yet the water-hen 1861
—the water-hen and landrail are members of this order, yet the first 1866 1869
— the water-hen 1872

is 1859 1860 1861 1866 1869
and landrail are members of this order, yet the first is 1872

berardi, in its general habits, in its astonishing power of diving,
in its
its
manner of
swimming
swimming,
and of flying when
made to
unwillingly it
take
takes
flight, would be mistaken by any one for an auk or
a grebe;
grebe;
nevertheless
nevertheless,
it is essentially a petrel, but with many parts of its organisation profoundly modified.
In
On
the other hand, the acutest observer by examining
its
the
dead body of the water-ouzel would never have suspected its sub-aquatic habits; yet this anomalous member of the
strictly
strictly
terrestrial thrush family wholly subsists by diving,— grasping the stones with its
feet,
feet
and using its wings under water.
He who believes that each being has been created as we now see it, must occasionally have felt surprise when he has met with an animal having habits and structure not
at all
at all
in agreement. What can be plainer than that the webbed feet of ducks and geese are formed for swimming?
Yet
yet
there are upland geese with webbed feet which rarely
or never
or never
go near the water; and no one except Audubon has seen the frigate-bird, which has all its four toes webbed, alight on the surface of the
ocean.
sea.
On the other
hand
hand,
grebes and coots are eminently aquatic, although their toes are only bordered by membrane. What seems plainer than that the long
toes,
toes
of
Grallatores
grallatores
are formed for walking over swamps and floating
plants?
plants,
yet the water-hen is nearly as aquatic as the
coot,
coot;
and the
second
landrail
nearly as terrestrial as the quail or partridge. In such cases, and many others could be given, habits have changed without a corresponding change of structure. The webbed feet of the upland goose may be said to have become
almost rudimentary
rudimentary
in function, though not in structure. In the frigate-bird, the
deeply scooped
deeply-scooped
membrane between the toes shows that structure has begun to change.
He who believes in separate and innumerable acts of creation
may
will
say, that in these cases it has pleased the