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1859
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plainly leads to the 1861 1866 1869 1872
leads me to 1859 1860

though only some of them, which 1866 1869 1872
which 1859 1860 1861

and as they would be found embedded in slightly different sub-stages of the same formation, they 1861 1866 1869 1872
they 1859 1860

and such assuredly we do find— 1861 1866 1869 1872
some more closely, 1859 1860

some more closely, related 1861 1866 1869 1872
related 1859 1860

was the record in 1869 1872
a record of the mutations of life, 1859 1860
a record of the mutations of life 1861 1866

of level, and that slight climatal changes would intervene during such lengthy periods; and in these cases the inhabitants of the archipelago would
have to
....
migrate, and no closely consecutive record of their modifications could be preserved in any one formation.
Very many of the marine inhabitants of the archipelago now range thousands of miles beyond its confines; and analogy plainly leads to the
believe
belief
that it would be chiefly these far-ranging
species
species,
though only some of them, which would oftenest produce new varieties; and the varieties would at first
generally
generally
be local or confined to one place, but if possessed of any decided advantage, or when further modified and improved, they would slowly spread and supplant their parent-forms. When such varieties returned to their ancient homes, as they would differ from their former
state
state,
in a nearly uniform, though perhaps extremely slight degree, and as they would be found embedded in slightly different sub-stages of the same formation, they would, according to the principles followed by many palæontologists, be ranked as new and distinct species.
If
then,
then
there be some degree of truth in these remarks, we have no right to expect to
find
find,
in our geological formations, an infinite number of those fine transitional
forms,
forms
which
which,
on
my
our
theory
theory,
assuredly
....
have connected all the past and present species of the same group into one long and branching chain of life. We ought only to look for a few links, and such assuredly we do find— some more
distantly
distantly,
some more closely, related to each other; and these links, let them be ever so close, if found in different stages of the same formation, would, by
most
many
palæonto- logists,
palæontologists,
be ranked as distinct species. But I do not pretend that I should ever have suspected how poor was the record in the best
pre-served
preserved
geological
section
sections,
presented,
would present,
....
had not the