See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1859
1860
1861
1866
1872

these in their larval condition 1869
such larvæ 1872

ancient 1869
still more ancient 1872

modifications 1869
slight modifications not appearing, 1859 1861
slight modifi- cations not appearing, 1860
slight modifications not having appeared, 1866
variations 1872

not having appeared at an 1869
at a very 1859 1860 1861 1866
having appeared at a not very 1872

of life, and having been 1869 1872
in the life of each, though perhaps caused at the earliest, and being 1859 1860 1861
in the life of each, though perhaps caused at the earliest, and having been 1866

as 1859 1860 1861 1869 1872
of an animal as 1866

progenitor, either in its adult or larval state, of all the members of the same 1866 1869 1872
common parent-form of each 1859 1860 1861

Rudimentary, 1866 1869
Rudimentary , 1859 1860 1861
Rudimentary , 1872

Atrophied, 1866 1869
atrophied , 1859 1860 1861
Atrophied , 1872

Organs . 1869
organs .— 1859
Organs — . 1860
Organs .— 1861
Organs . 1866 1872

or even general, throughout 1869 1872
throughout 1859 1860 1861 1866

is 1869
or other is 1872

2 blocks not present in 1859 1860 1861 1866 1869; present in 1872
In the mammalia, for instance, the males possess rudimentary mammæ; in snakes one lobe of the lungs is rudimentary; in birds the "bastard-wing" may safely be considered as a rudimentary digit, and in some species the whole wing is so far rudimentary that it cannot be used for flight. What can be more curious than the presence of teeth in fœtal whales, which when grown up have not a tooth in their heads; or the teeth, which never cut through the gums, in the upper jaws of unborn calves?

In the mammalia, for instance, the males always possess rudimentary mammæ; in snakes one lobe of the lungs is rudimentary; 1869
For instance, rudimentary mammæ are very general in the males of mammals: I presume that the "bastard-wing" 1859 1860 1861
For instance, rudimentary mammæ are very general with male mammals: I presume that the "bastard-wing" 1866

the "bastard-wing" may safely be 1869
may be safely 1859 1860 1861 1866

rudimentary digit, and in not a few species the wings cannot be used for flight or are reduced to 1869
digit in 1859 1860 1861 1866

What can be more curious than 1869
Some of the cases of rudimentary organs are extremely curious; for instance, 1859 1860 1861 1866

far enough back in time, may remain for a long period, or for ever,
incapable
in- capable
of demonstration. The law will not
strictly hold
hold
good in those cases in which an ancient form became adapted in its larval state to some special line of life, and transmitted the same larval state to a whole group of descendants; for these in their larval condition will not resemble any ancient form in its adult state.
Thus, as it seems to me, the leading facts in embryology, which are second
in importance
....
to none in
natural history,
importance,
are explained on the principle of modifications in the many descendants from some one ancient progenitor, not having appeared at an early period of life, and having been inherited at a corresponding
not early
....
period. Embryology rises greatly in interest, when we
thus
....
look at the embryo as a picture, more or less obscured, of the progenitor, either in its adult or larval state, of all the members of the same great
class
class.
of
....
animals.
....
Rudimentary, Atrophied,
or
and
aborted
Aborted
Organs .
Organs or parts in this strange condition, bearing the
stamp
plain stamp
of inutility, are extremely
common
common,
or even general, throughout nature. It would be
impossible
difficult
to name one of the higher animals in which some part is not in a rudimentary condition. In the mammalia, for instance, the males always possess rudimentary mammæ; in snakes one lobe of the lungs is rudimentary; in birds the "bastard-wing" may safely be considered as a rudimentary digit, and in not a few species the wings cannot be used for flight or are reduced to a
rudimentary
rudiment.
state:
....
in
....
very
....
many
....
snakes
....
one
....
lobe
....
of
....
the
....
lungs
....
is
....
rudimentary;
....
in
....
other
....
snakes
....
there
....
are
....
rudiments
....
of
....
the
....
pelvis
....
and
....
hind
....
limbs.
....
What can be more curious than the presence of teeth in fœtal whales, which when grown up have not a tooth in their heads;
and
or
the
presence of
....
teeth, which never cut through the