Origin of Species Variorum

→ offer in vain 1859 1860 1861 1866 1872

in vain offer 1869

↑ 1 blocks not present in 1859 1860 1861; present in 1866 1869 1872

That this nectar is much liked by the hive-bee is certain; for I have repeatedly seen, but only in the autumn, many hive-bees sucking the flowers through holes in the base of the tube which had been bitten by humble-bees.

→ I have found by experiment that 1859 1860

OMIT 1861

→ OMIT 1860

greatly 1859

as previously stated, 1861

→ visiting and moving parts of the corolla, 1859 1860

moving the petals, 1861

→ in the most perfect manner 1859 1860 1861 1866

OMIT 1869 1872

→ continued 1859 1860 1861 1866

most perfect manner, by the continued 1869 1872

→ individuals presenting mutual and slightly favourable 1859 1860 1861

individuals presenting slight 1866

all the individuals which presented slight 1869 1872

→ structure. 1859 1860 1861

structure mutually favourable to each other. 1866 1869 1872

→ action, for instance, of the coast-waves, called a trifling and insignificant cause, when applied to 1859 1860 1861

action, for instance, of the coast-waves, called at trifling and insignificant cause, when applied to 1866

agencies still at work, spoken of as trifling or insignificant, when applied to 1869

agencies which we see still at work, spoken of as trifling or insignificant, when used in explaining 1872

→ if it be a true principle, 1859 1860 1861 1866 1869

OMIT 1872

clover, which is visited by humble-bees alone; so that whole fields of the red clover →offer in vain an abundant supply of precious nectar to the hive-bee. ↑ Thus it might be a great advantage to the hive-bee to have a slightly longer or differently constructed proboscis. On the other hand, →I have found by experiment that the fertility of

clover,

clover

→OMIT depends on bees →visiting and moving parts of the corolla, so as to push the pollen on to the stigmatic surface. Hence, again, if humble-bees were to become rare in any country, it might be a great advantage to the red clover to have a shorter or more deeply divided tube to its corolla, so that the hive-bee could visit its flowers. Thus I can understand how a flower and a bee might slowly become, either simultaneously or one after the other, modified and adapted →in the most perfect manner to each

other

other,

the →continued preservation of →individuals presenting mutual and slightly favourable deviations of →structure.

I am well aware that this doctrine of natural selection, exemplified in the above imaginary instances, is open to the same objections which were

first urged against Sir Charles Lyell's noble views on "the modern changes of the earth, as illustrative of geology;" but we now

very

....

seldom hear the →action, for instance, of the coast-waves, called a trifling and insignificant cause, when applied to the excavation of

the deepest

gigantic

valleys or

the formation of

long

the longest

lines of inland cliffs. Natural selection

~~can~~

can

acts

act

only by the preservation and accumulation of

~~infinitesimally~~

infinitesimally

small inherited modifications, each profitable to the preserved being; and as modern geology has almost banished such views as the excavation of a great valley by a single diluvial wave, so will natural

selec- tion,

selection

selection,

→if it be a true principle, banish the belief of the continued creation of new organic