Origin of Species Variorum

→ by some anatomists to 1869 1872

to 1859 1861

by some to 1866

→ OMIT 1872

of the corolla 1859 1860 1861 1866 1869

→ with birds the 1872

the 1859 1860 1861 1866 1869

→ and form of 1869 1872

of 1859 1860 1861 1866

→ is 1872

of correlation is very 1859 1860 1861 1866

of correlation is 1869

→ the 1859 1860 1861 1872

in cats the 1866 1869

→ OMIT 1872

between blue eyes and deafness 1859 1860 1861

between complete whiteness with blue eyes and deafness, 1866 1869

→ in cats between complete whiteness and blue eyes with deafness, or between 1872

in cats, and 1859 1860 1861

or between 1866 1869

→ or in pigeons between their 1866 1869 1872

the 1859 1860 1861

→ or between 1869 1872

in pigeons, and 1859 1860 1861

and between 1866

→ OMIT 1872

if we pick out 1859 1860 1861 1866 1869

→ on the whole the 1872

the 1859 1860 1861 1866 1869

→ teeth; but there are so many exceptions to this rule, as Mr. Mivart has remarked, that it has little value. 1872

teeth. 1859 1860 1861 1866 1869

→ correlation and variation, 1872

correlation in modifying important structures, 1859 1860 1861

correlation in leading to modifications of important structures, 1866

variation and correlation, 1869

→ of 1859 1860 1861 1866 1872

before referred to, of 1869

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 →by some anatomists to be homologous with the limbs. These tendencies, I do not doubt, may be mastered more or less completely by natural

selection:

selection;

thus a family of stags once existed with an antler only on one side; and if this had been of any great use to the

breed

breed,

it might probably have been rendered permanent by

natural

....

selection.

Homologous parts, as has been remarked by some authors, tend to cohere; this is often seen in monstrous

plants;

plants:

and nothing is more common than the union of homologous parts in normal structures, as

the

in the

union of the petals →OMIT into a tube. Hard parts seem to affect the

forms

form

of adjoining soft parts; it is believed by some authors that →with birds the diversity in the shape of the pelvis

in birds

....

causes the remarkable diversity in the shape of their kidneys. Others believe that the shape of the pelvis in the human mother influences by pressure the shape of the head of the child. In snakes, according to Schlegel, the

shape

form

of the body and the manner of swallowing determine the position →and form of several of the most important viscera.

The nature of the bond →is frequently quite obscure. M. Is. Geoffroy St. Hilaire has forcibly remarked, that certain malconformations

very

....

frequently, and that others

rarely

rarely,

coexist,

co-exist,

without our being able to assign any reason. What can be more singular than →the relation →OMIT →in cats between complete whiteness and blue eyes with deafness, or between the tortoise-shell colour

with

and

the female sex; →or in pigeons between their feathered feet and skin

between

betwixt

the outer

toes

toes,

→or between the presence of more or less down on the young

birds

bird

pigeon

when first hatched, with the future colour of

their

its

plumage; or, again, the relation between the hair and teeth in the naked Turkish dog, though here

probably

no doubt

homology comes into play? With respect to this latter case of correlation, I think it can hardly be accidental,

that,

that

→OMIT the two orders of

mammalia

mammals

which are most abnormal in their dermal

covering,

coverings,

viz.

viz.,

Cetacea (whales) and Edentata (armadilloes, scaly

anteaters,

ant-eaters,

&c.),

that these

these

....

are likewise →on the whole the most abnormal in their →teeth; but there are so many exceptions to this rule, as Mr. Mivart has remarked, that it has little value.

I know of no case better adapted to show the importance of the laws of →correlation and variation, independently of utility

and,

and

therefore,

therefore

of natural selection, than that →of the