Origin of Species Variorum

→ under changing 1869 1872

during the long course of ages and under varying 1859 1860 1861 1866

→ present individual differences in all 1869

vary at all in the several 1859 1860 1861 1866

present individual differences in almost every 1872

→ the high geometrical ratio 1860 1861 1866 1869

the high geometrical powers 1859

their geometrical rate 1872

→ of each species, 1859 1860 1861 1866 1869

a severe struggle for life 1872

→ a severe struggle for life at some age, season, or year, 1860 1861 1866 1869

at some age, season, or year, a severe struggle for life, 1859

at some age, season, or year, 1872

→ preservation, 1859 1860 1869

preservation 1861 1866

pre- servation, or the survival of the fittest, 1872

→ or the survival of the fittest, I 1869

I 1859 1860 1861 1866 1872

→ OMIT 1869 1872

for the sake of brevity, 1859 1860 1861 1866

→ Selection. 1859 1861 1866 1869 1872

Selection; and it leads to the improvement of each creature in relation to its organic and inorganic conditions of life. 1860

and thus check the inordinate increase of specific forms throughout the world. Dr. Hooker has recently shown that in the

S. E.

S.E.

corner of Australia, where, apparently, there are many invaders from different quarters of the

globe,

world,

the endemic Australian species have been greatly reduced in number. How much weight to attribute to these several considerations I

will

not pretend to

say;

assign;

but conjointly they must limit in each country the tendency to an indefinite augmentation of specific forms.

Summary

Chapter .—

Chapter. —

Chapter.

If,

→under changing conditions of

life,

life

organic beings →present individual differences in all

part

parts

of their

organisation,

structure,

and

I think

....

this cannot be disputed; if there be, owing to →the high geometrical ratio of

increase,

increase

→of each species, →a severe struggle for life at some age, season, or year, and this certainly cannot be disputed; then, considering the infinite complexity of the relations of all organic beings to each other and to their conditions of

existence,

life,

causing an infinite diversity in structure, constitution, and habits, to be advantageous to them,

I think

....

it would be a most extraordinary fact if no

variation

variations

ever had

had ever

ever

occurred useful to each

being's

beings

own welfare, in the same

way

manner

as so many variations have occurred useful to man. But if variations useful to any organic being

ever do

occur,

ever occur,

assuredly individuals thus characterised will have the best chance of being preserved in the struggle for life; and from the strong principle of

inheritance

inheritance,

these

they

will tend to produce offspring similarly characterised. This principle of →preservation, →or the survival of the fittest, I have

called,

called

→OMIT Natural →Selection.