Origin of Species Variorum

→ were 1866 1869

appeared to be 1859 1860 1861

are 1872

→ others; and of this fact I have myself observed a striking instance. 1866

others. 1859 1860 1861

others; and of this fact I have myself observed striking instances. 1869 1872

→ of the structure of various organs; 1859 1860 1861 1866 1869

structure; 1872

→ of use and disuse 1859 1860 1861 1866 1869

OMIT 1872

→ of Growth . 1866

of Growth .— 1859 1860 1861

Variation . 1869 1872

→ modified. 1859 1861 1866 1869 1872

modified. This is a very important subject, most imperfectly understood. 1860

→ This is a very important subject, most imperfectly understood, and no doubt totally different classes of facts may be here easily confounded together: we shall presently see that simple inheritance often gives the false appearance of correlation. 1866 1869

This is a very important subject, most imperfectly understood. 1859 1861

The most obvious case is, that modifications accumulated solely for the good of the young or larva, will, it may safely be concluded, affect the structure of the adult; in the same manner as any malconformation affecting the early embryo, seriously affects the whole organisation of the adult. 1860

This is a very important subject, most imperfectly understood, and no doubt wholly different classes of facts may be here easily confounded together. 1872

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

We shall presently see that simple inheritance often gives the false appearance of correlation.

→ The 1859 1860 1861 1866 1869

One of the 1872

→ most obvious instance of real correlation is, that variations of structure arising in 1866 1869

most obvious case is, that modifications accumulated solely for the good of 1859 1861

several parts of 1860

most obvious real cases is, that variations of structure arising in 1872

→ young or in the larvæ naturally tend to affect the structure of the mature animal; in the same manner as any malconformation in the early embryo is known seriously to affect the whole organisation of the adult. 1866 1869

young or larva, will, it may safely be concluded, affect the structure of the adult; in the same manner as any malconformation affecting the early embryo, seriously affects the whole organisation of the adult. 1859 1861

body which are homologous, and which, at an early embryonic period, are alike, seem liable to vary in an allied manner: we see this in the right and left sides of the body varying in the same manner; in the front and hind legs, and even in the jaws and limbs, varying together, for the lower jaw is believed to be homologous with the limbs. 1860

young or larvæ naturally tend to affect the structure of the mature animal. 1872

→ identical in structure, and which are necessarily exposed to similar conditions, seem eminently 1866 1869

alike, seem 1859 1861

identical in structure, and which are neces- sarily exposed to similar conditions, seem eminently 1872

destroyed by frost, and then collect seed from the few survivors, with care to prevent accidental crosses, and then again get seed from these seedlings, with the same precautions, the experiment cannot be said to have been

~~even~~

even

tried. Nor let it be supposed that

differences in the constitution of seedling kidney-beans

never

ever

appear, for an account has been published how much more hardy some seedlings →were than →others; and of this fact I have myself observed a striking instance.

On the whole,

~~I think~~

I think

we may conclude that habit,

or use

use,

and disuse, have, in some cases, played a considerable part in the modification of the

constitution

constitution,

and →of the structure of various organs; but that the effects →of use and disuse have often been largely combined with, and sometimes overmastered

by,

the natural selection of innate

differences.

variations.

Correlation

Correlated

Correlation

→ of Growth .

I mean by this expression that the whole organisation is so tied together during its growth and development, that when slight variations in any one part occur, and are accumulated through natural selection, other parts become →modified. →This is a very important subject, most imperfectly understood, and no doubt totally different classes of facts may be here easily confounded together: we shall presently see that simple inheritance often gives the false appearance of correlation. ↑ →The →most obvious instance of real correlation is, that variations of structure arising in the →young or in the larvæ naturally tend to affect the structure of the mature animal; in the same manner as any malconformation in the early embryo is known seriously to affect the whole organisation of the adult. The several parts of the body which are homologous, and which, at an early embryonic period, are →identical in structure, and which are necessarily exposed to similar conditions, seem eminently liable to vary