Origin of Species Variorum

→ OMIT 1866 1869 1872

same species, also, often 1859 1860 1861

→ only in most cases 1866 1869

in the same manner as, only in most cases 1859 1860 1861

in the same manner as do the closely allied species of the same genus 1872

→ lesser degree, in the same manner as do closely-allied species of the same genus in a 1866

lesser degree than, do closely-allied species of the same genus in a 1859 1860 1861

less degree, in the same manner as do closely-allied species of the same genus in a 1869

OMIT 1872

→ nature. 1859 1860 1861 1866 1869

nature, but the differences in most cases are less in degree. 1872

→ when we find that there are hardly any 1859 1860 1861 1866

as true, for the 1869 1872

→ either amongst animals or plants, which have not 1859 1860 1861 1866

of many animals and plants have 1869 1872

→ the descendants of aboriginally distinct species, 1861 1866 1869 1872

mere varieties, 1859 1860

→ mere varieties. 1861 1866 1869 1872

the descendants of aboriginally distinct species. 1859 1860

number of generations, would be opposed to all experience. I may add,

that

that,

when under nature the conditions of life do change, variations and reversions of character probably do occur; but natural selection, as will hereafter be explained, will determine how far the new characters thus arising shall be preserved.

Character of Domestic

Varieties:

Varieties;

difficulty of distinguishing between Varieties and Species; origin of Domestic Varieties from one or more Species.

When we look to the hereditary varieties or races of our domestic animals and plants, and compare them with

species

....

closely allied

together,

species,

we generally perceive in each domestic race, as already remarked, less uniformity of character than in true species. Domestic races

of the

often

→OMIT have a somewhat monstrous character; by which I mean, that, although differing from each other, and from

the

....

other species of the same genus, in several trifling respects, they often differ in an extreme degree in some one part, both when compared one with another, and more especially when compared with

all

....

the species

under

nature to which they are nearest allied. With these exceptions (and with that of the perfect fertility of varieties when crossed, — a subject hereafter to be discussed), domestic races of the same species differ from each

other

other,