Origin of Species Variorum

→ And it is in fresh water that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some of the most 1859 1861 1866 1869

These 1860

And it is in fresh-water basins that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some of the most 1872

→ now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders at present widely separated in the natural scale. 1869

now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders now widely separated in the natural scale. 1859 1861 1866

may almost be called living fossils; they have endured to the present day, from having inhabited a confined area, and from having thus been exposed to less severe competition. 1860

now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders at present widely sundered in the natural scale. 1872

→ varied and therefore less severe 1869

severe 1859 1861 1866

varied, and therefore less severe, 1872

→ up the circumstances favourable and unfavourable for the production of new species through natural selection, 1869

up the circumstances favourable and unfavourable to natural selection, 1859 1860 1861 1866

up, 1872

→ permits. 1859 1860 1861 1866 1869

permits, the circumstances favourable and unfavourable for the production of new species through natural selection. 1872

→ OMIT 1861 1866 1869 1872

looking to the future, 1859 1860

→ will have been 1869 1872

and which consequently will exist for long periods in a broken condition, will be 1859

and which consequently will exist for long periods in a broken condition, is 1860

and which consequently has existed for long periods in a broken condition, has been 1861 1866

→ for a long time 1869 1872

long 1859 1860 1861 1866

→ OMIT 1869 1872

will first have 1859

first 1860 1861 1866

→ will have been 1869 1872

at this period 1859 1860 1861 1866

→ new species will have been 1869 1872

species will thus be 1859 1860

species will thus have been 1861 1866

→ have been 1861 1866 1869

be 1859 1860

have been very 1872

→And it is in fresh water that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some of the most anomalous forms →now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders at present widely separated in the natural scale. These anomalous forms may

almost

....

be called living fossils; they have endured to the present day, from having inhabited a confined area, and

from

thus

....

having

thus

....

been exposed to less →varied and therefore less severe competition.

To sum →up the circumstances favourable and unfavourable for the production of new species through natural selection, as far as the extreme intricacy of the subject →permits. I

conclude,

conclude

→OMIT that for terrestrial productions a large continental area,

which

which,

will probably

has

undergo

undergone

many oscillations of level, →will have been the most favourable for the production of many new forms of life,

likely

fitted