Origin of Species Variorum

→ I suspect that not 1859 1860 1861 1866

Not 1869 1872

→ epoch. 1859 1860 1861 1866 1869

epoch. Wherever sediment did not accumulate on the bed of the sea, or where it did not accumulate at a sufficient rate to protect organic bodies from decay, no remains could be preserved. 1872

→ In our archipelago, I believe that fossiliferous formations could be formed of sufficient thickness 1859

I believe that fossiliferous formations could be formed in the archipelago, of thickness sufficient 1860

As the common rule formations rich in fossils would be formed in the archipelago, of thickness sufficient 1861

Formations rich in fossils, and of thickness sufficient 1866

Formations rich in fossils of many kinds, and of thickness sufficient 1869 1872

→ only 1859 1860 1861

would generally be formed in the archipelago only 1866 1869 1872

→ during 1859 1860 1861

of time, during 1866 1869 1872

→ would 1859 1860

on the steeper shores would 1861 1866 1869 1872

→ America. 1859 1860 1872

America; even throughout the extensive and shallow seas within the archipelago sedimentary beds could not, during the periods of elevation, be accumulated of great thickness, or become capped and protected by subsequent deposits, so as to have a good chance of enduring to an extremely distant future. 1861 1866

America; even throughout the extensive and shallow seas within the archipelago sedimentary beds could hardly be accumulated of great thickness during the periods of elevation, or become capped and protected by subsequent deposits, so as to have a good chance of enduring to a very distant future. 1869

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

Even throughout the extensive and shallow seas within the archipelago, sedimentary beds could hardly be accumulated of great thickness during the periods of elevation, or become capped and protected by subsequent deposits, so as to have a good chance of enduring to a very distant future.

in organic beings; yet if all the species were to be collected which have ever lived there, how imperfectly would they represent the natural history of the world!

But we have every reason to believe that the terrestrial productions of the archipelago would be preserved in an

extremely

excessively

imperfect manner in the formations which we suppose to be there accumulating. →I suspect that not many of the strictly littoral animals, or of those which lived on naked submarine rocks, would be embedded; and those embedded in gravel or

sand

sand,

would not endure to a distant →epoch. Wherever sediment did not

accu- mulate

accumulate

on the bed of the sea, or where it did not accumulate at a sufficient rate to protect organic bodies from decay, no remains could be preserved.

→In our archipelago, I believe that fossiliferous formations could be formed of sufficient thickness to last to an

age

age,

as distant in futurity as the secondary formations lie in the past, →only during periods of subsidence. These periods of subsidence would be separated from each other by

immense

enormous

intervals

intervals,

→during which the area would be either stationary or rising; whilst rising,

the

each

fossiliferous

formations

formation

→would be destroyed, almost as soon as accumulated, by the incessant coast-action, as we now see on the shores of South →America. ↑ During the periods of

subsidence,

subsidence

there would probably be much extinction of life; during the periods of elevation, there would be much variation, but the geological record would then be

less

least

perfect.

It may be doubted whether the duration of any one great period of subsidence over the whole or part of the archipelago, together with a contemporaneous accumulation of sediment, would

exceed

exceed

the average duration of the same specific forms; and these contingencies are