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See page in:
1859
1860
1861
1866
1869
1872

Compare with:
1859
1860
1861
1869
1872

↑ 4 blocks not present in 1859 1860 1861 1866; present in 1869 1872
In all cases there are two factors, the nature of the organism, which is much the most important of the two, and the nature of the conditions. The direct action of changed conditions leads to definite or indefinite results. In the latter case the organisation seems to become plastic, and we have much fluctuating variability. In the former case the nature of the organism is such that it yields readily, when subjected to certain conditions, and all, or nearly all the individuals become modified in the same way.
→ bud-variations, or "sporting" plants as they are often called, 1866
"sporting" plants, 1859 1860 1861
↑ 2 blocks not present in 1859 1860 1861 1866; present in 1869 1872
It is very difficult to decide how far changed conditions, such as of climate, food, &c., have acted in a definite manner. There is some reason to believe that in the course of time the effects have been greater than can be proved to be the case by any clear evidence.
→ We may, at least, 1859 1860 1861 1866
But we may 1869
→ such influences cannot have produced the many striking and 1859 1860 1861 1866
the innumerable 1869
→ between one organic being and another, 1859 1860 1861 1866
OMIT 1869
→ nature. 1859 1860 1861 1866
nature between various organic beings, cannot be attributed simply to such action. 1869
↑ 1 blocks not present in 1859 1860 1861 1866 1869; present in 1872
But we may safely conclude that the innumerable complex co-adaptations of structure, which we see throughout nature between various organic beings, cannot be attributed simply to such action.
→ Some little influence may be attributed to climate, food, &c.: thus, 1859 1860 1861 1866
In the following cases the conditions seem to have produced some slight definite effect: 1869 1872
→ vary and become 1861 1866
are 1859 1860 1869 1872
→ greater depths. 1859 1860 1861 1866
a greater depth; but these statements have lately been disputed. 1869
a greater depth; but this certainly does not always hold good. 1872
→ on islands or near the coast. So with insects: Wollaston is convinced that residence near the sea affects their colours. 1866
on islands or near the coast. 1859 1860 1861
on islands or near the coast; and Wollaston is convinced that residence near the sea affects the colours of insects. 1869
near the coast or on islands; and Wollaston is convinced that residence near the sea affects the colours of insects. 1872
→ Moquin-Tandon gives a list of plants which when growing 1866
So with insects, Wollaston is convinced that residence 1859 1860 1861
→ sea-shore have their leaves in some degree fleshy, though not elsewhere fleshy. 1866
sea affects their colours. 1859 1860 1861
the reproductive
system.
system
is
is
eminently
eminently
susceptible
susceptible
to
to
changes
changes
in
in
the
the
conditions
conditions
of
of
life;
life;
and
and
to
to
this
this
system
system
being
being
functionally
functionally
disturbed
disturbed
in
in
the
the
parents,
parents,
I
I
chiefly
chiefly
attribute
attribute
the
the
varying
varying
or
or
plastic
plastic
condition
condition
of
of
the
the
offspring.
offspring.
↑ The male and female sexual elements seem to be affected before that union takes place which is to form a new being. In the case of →bud-variations, or "sporting" plants as they are often called, the bud, which in its earliest condition does not apparently differ essentially from an ovule, is alone affected. But why, because the reproductive system is disturbed, this or that part should vary more or less, we are profoundly ignorant. Nevertheless, we can here and there dimly catch a faint ray of light, and we may feel sure that there must be some cause for each deviation of structure, however slight.
How much direct effect difference of climate, food, &c., produces on any being is extremely doubtful. ↑ My impression is, that the effect is
extremely
....
small in the case of animals, but
perhaps rather
....
more in that of plants. →We may, at least, safely conclude that →such influences cannot have produced the many striking and complex
coadaptations
co-adaptations
of structure →between one organic being and another, which we see
everywhere
everywhere
throughout →nature. ↑ →Some little influence may be attributed to climate, food, &c.: thus, E. Forbes
asserts
speaks confidently
that shells at their southern limit, and when living in shallow water, →vary and become more brightly coloured than those of the same species
from further
further
north or from →greater depths.
Mr. Gould
Gould
believes that birds of the same species are more brightly coloured under a clear atmosphere,
that
than
when living →on islands or near the coast. So with insects: Wollaston is convinced that residence near the sea affects their colours. →Moquin-Tandon gives a list of plants which when growing near the →sea-shore have their leaves in some degree fleshy, though not elsewhere fleshy.