See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1859
1860
1861
1866
1872

OMIT 1869 1872
(utterly ignorant though we be of the meaning of the law) 1859 1860 1861 1866

intervals of time— 1869 1872
intervals— 1859 1860 1861 1866

1 blocks not present in 1869 1872; present in 1859 1860 1861 1866
the fullest freedom for the entrance of pollen from another individual will explain this state of exposure, more especially as the plant's own anthers and pistil generally stand so close together that self-fertilisation seems almost inevitable.

in most of these flowers there is a 1869
in several, perhaps in all, such flowers, there is a very 1859 1860
in most of these flowers there is a very 1861 1866
these almost invariably present beautiful and 1872

between their structure and the manner in which bees suck the nectar; for, in doing this, they either push the flowers own pollen on the stigma, or bring pollen from another flower. 1869
between the structure of the flower and the manner in which bees suck the nectar; for, in doing this, they either push the flower's own pollen on the stigma, or bring pollen from another flower. 1859 1860
between their structure and the manner in which bees suck the nectar; for, in doing this, they either push the flower's own pollen on the stigma, or bring pollen from another flower. 1861 1866
in relation to the visits of insects. 1872

I have found, by experiments published elsewhere, that 1859 1860 1861 1866 1869
OMIT 1872

that bees should 1859 1860 1861 1866 1869
for insects to 1872

as I believe, 1859 1860 1861 1866 1869
OMIT 1872

between different varieties, or between individuals of the same variety but of another strain, gives vigour and fertility to the offspring; and on the other hand, that close interbreeding diminishes vigour and fertility; that these facts alone incline me to believe that it is a general law of nature OMIT that no organic being
self-fertilises
fertilises
itself for
an eternity
a perpetuity
of generations; but that a cross with another individual is occasionally— perhaps at
very
....
long intervals of time— indispensable.
On the belief that this is a law of nature, we can, I think, understand several large classes of facts, such as the following, which on any other view are inexplicable. Every hybridizer knows how unfavourable exposure to wet is to the fertilisation of a flower, yet what a multitude of flowers have their anthers and stigmas fully exposed to the weather!
but if
If
an occasional cross be indispensable, notwithstanding that the
plant's
plants
own anthers and pistil stand so near each other as almost to
insure
ensure
self-fertilisation, the fullest freedom for the entrance of pollen from another individual will explain the above state of exposure of the organs. Many flowers, on the other hand, have their organs of fructification closely enclosed, as in the great papilionaceous or pea-family; but in most of these flowers there is a curious
adaptations
adaptation
between their structure and the manner in which bees suck the nectar; for, in doing this, they either push the flowers own pollen on the stigma, or bring pollen from another flower. So necessary are the visits of bees to
papilionaceous
many papilinaceous
many papilionaceous
flowers, that I have found, by experiments published elsewhere, that their fertility is greatly diminished if these visits be prevented. Now, it is scarcely possible that bees should fly from flower to flower, and not
to carry
carry
pollen from one to the other, to the great
good
good,
as I believe, of the plant.
Insects
Bees will
act like a camel-hair pencil, and it is