Origin of Species Variorum

→ generally 1860 1861 1866 1869

always be somewhat rare; for beings thus provided will commonly 1872

→ state, and consequently will have become long ago extinct. 1869 1872

and developed condition. 1860 1861

and developed condition, and consequently will not now exist. 1866

→ on the other hand, is quite 1866 1869 1872

is 1860 1861

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

Owen considers the simple filamentary limbs of the Lepidosiren as the "beginnings of organs which attain full functional development in higher vertebrates;" but, according to the view lately advocated by Dr. Günther, they are probably remnants, consisting of the persistent axis of a fin, with the lateral rays or branches aborted.

→ the udders of a 1869 1872

the udder of a 1860 1861

those of the 1866

→ are only slightly developed and which 1860 1861 1866 1869

OMIT 1872

→ are 1860 1861 1866 1869

and are feebly developed, are 1872

→ OMIT 1869

in the individuals of the same species 1860 1861 1866 1872

→ OMIT 1869

degree of 1860 1861 1866

the degree of their 1872

→ respects in the individuals of the same species. 1869

respects. 1860 1861 1866 1872

→ the degree 1860 1861 1866 1869

also, the extent 1872

→ in certain groups. 1859 1860 1861 1866 1869

belonging to the same family. 1872

→ in certain 1869 1872

we find in an 1859 1860 1861 1866

→ parts are entirely absent 1869 1872

no trace of an organ, 1859 1860 1861 1866

→ and which are 1869

and which is 1859 1860 1861 1866

in them, and which are 1872

→ most of the Scrophulariaceæ the 1869 1872

the snapdragon (antirrhinum) we generally do not find a rudiment of a 1859 1860 1861

some Scrophulariaceæ we rarely find even a rudiment of a 1866

→ is utterly aborted; yet we may conclude that a fifth stamen once existed, for a rudiment of it is found in many species of the family, and this rudiment occasionally becomes perfectly developed, as may 1869

but this may sometimes 1859 1860 1861 1866

is utterly aborted; yet we may conclude that a fifth stamen once existed, for a rudiment of it is found in many species of the family, and this rudiment occasionally becomes perfectly developed, as may sometimes 1872

→ seen in the common snap-dragon. 1869 1872

seen. 1859 1860 1861

seen plainly or fully developed. 1866

condition will →generally have been supplanted

and exterminated

....

by their successors with the

organ

same organ

in a more perfect →state, and consequently will have become long ago extinct. The wing of the penguin is of high service,

and acts

acting

as a fin; it may, therefore, represent the nascent state of the

wings

wing;

of birds;

....

not that I believe this to be the

case,

case;

it is more probably a reduced organ, modified for a new

function;

function:

the wing of the

Apteryx

Apteryx,

→on the other hand, is quite useless, and is truly rudimentary. The simple filamentary limbs of the Lepidosiren apparently are in a nascent state; for, as Owen has

recently remarked,

remarked,

they are the "beginnings of organs which attain full functional development in higher vertebrates." ↑ The mammary

glans

glands

of the

Ornithorhynchus

Ornitho-rhynchus

may,

may

perhaps,

probably,

....

be considered, in comparison with →the udders of a cow, as in a nascent

state.

condition.

The ovigerous frena of certain cirripedes, which →are only slightly developed and which have ceased to give attachment to the

ova

ova,

→are nascent branchiæ. Rudimentary organs →OMIT are very liable to vary in →OMIT development and in other →respects in the individuals of the same species.

Moreover, in

closely allied species, →the degree to which the same organ has been

rendered rudimentary

reduced

occasionally differs much. This latter fact is well exemplified in the state of the wings

of the

female moths →in certain groups. Rudimentary organs may be utterly aborted; and this implies, that →in certain

animal

animals

plant

plants,

→parts are entirely absent which analogy would lead us to expect to

find

find,

→and which are occasionally found in monstrous

individuals

the

species.

Thus in →most of the Scrophulariaceæ the fifth

stamen;

stamen

→is utterly aborted; yet we may conclude that a fifth stamen once existed, for a rudiment of it is found in many species of the family, and this rudiment occasionally becomes perfectly developed, as may be →seen in the common snap-dragon.