Origin of Species Variorum

→ OMIT 1872

he finds that 1859 1860 1861 1866 1869

→ good in Australia: but if most of the Australian trees are dichogamous, the same result would follow as if they bore flowers with separated sexes. 1872

in Australia; and 1859 1860 1861 1866 1869

→ OMIT 1872

the sexes of 1859 1860 1861 1866 1869

→ various terrestrial species are hermaphrodites, such as the 1872

on the land there are some hermaphrodites, as 1859 1860 1861 1866 1869

→ OMIT 1872

case of a 1859 1860 1861 1866 1869

→ OMIT 1872

We can understand 1859 1860 1861 1866 1869

→ is intelligible on 1872

on 1859 1860 1861 1866 1869

→ for owing to 1872

by considering the medium in which terrestrial animals live, and 1859 1860 1861 1866 1869

→ there are 1872

for we know of 1859 1860 1861 1866 1869

→ with 1872

in the case of 1859 1860 1861 1866 1869

→ the currents of 1872

currents in the 1859 1860 1861 1866 1869

→ OMIT 1872

case of an 1859 1860 1861 1866 1869

→ OMIT 1872

within the body, 1859 1860 1861 1866 1869

→ OMIT 1872

a case of very great difficulty 1859 1860 1861 1866 1869

→ a case of great difficulty; but 1872

but 1859 1860 1861 1866 1869

→ both with 1872

in the case of both 1859 1860 1861 1866 1869

→ OMIT 1872

not rarely, some of them 1859 1860 1861 1866 1869

→ OMIT 1872

with other individuals, 1859 1860 1861 1866 1869

→ it appears that with animals and plants 1872

I am strongly inclined to suspect that, both in the vegetable and animal kingdoms, 1859 1860 1861

I am strongly inclined to suspect, that, both in the vegetable and animal kingdoms, 1866 1869

be regularly carried from flower to flower; and this will give a better chance of pollen being occasionally carried from tree to tree. That trees belonging to all Orders have their sexes more often separated than other plants, I find to be the case in this country; and at my request Dr. Hooker tabulated the trees of New Zealand, and Dr. Asa Gray those of the United States, and the result was as I anticipated. On the other hand, Dr. Hooker

has recently

....

informed

informs

me that →OMIT the rule does not hold →good in Australia: but if most of the Australian trees are dichogamous, the same result would follow as if they bore flowers with separated sexes. I have made these few remarks on →OMIT trees simply to call attention to the subject.

Turning for a

very

....

brief space to animals: →various terrestrial species are hermaphrodites, such as the land-mollusca and earth-worms; but these all pair. As yet I have not found a single →OMIT terrestrial animal which

fertilises

can fertilise

itself. →OMIT

this

This

remarkable fact, which offers so strong a contrast with terrestrial plants, →is intelligible on the view of an occasional cross being

indispensable,

indispensable;

→for owing to the nature of the fertilising

element;

element

→there are no means, analogous to the action of insects and of the wind →with plants, by which an occasional cross could be effected with terrestrial animals without the concurrence of two individuals. Of aquatic animals, there are many self-fertilising hermaphrodites; but here →the currents of water offer an obvious means for an occasional cross.

And, as

in the case of flowers, I have as yet failed, after consultation with one of the highest authorities, namely, Professor Huxley, to discover a single →OMIT hermaphrodite animal with the organs of reproduction so perfectly enclosed →OMIT that access from

without

without,

and the occasional influence of a distinct

individual

individual,

can be shown to be physically impossible. Cirripedes long appeared to me to

present

present,

→OMIT under this point of

view;

view,

→a case of great difficulty; but I have been enabled, by a fortunate chance,