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AN HISTORICAL SKETCH OF THE RECENT PROGRESS OF OPINION ON THE ORIGIN OF SPECIES. 1866
An Historical Sketch of the recent Progress of Opinion on the Origin of Species. — — — — — — — — 1861
AN HISTORICAL, SKETCH OF THE RECENT PROGRESS OF OPINION ON THE ORIGIN OF SPECIES. 1869
AN HISTORICAL SKETCH OF THE PROGRESS OF OPINION ON THE ORIGIN OF SPECIES, 1872

←Subtitle not present 1861 1866 1869 PREVIOUSLY TO THE PUBLICATION OF THE FIRST EDITION OF THIS WORK. — — — — — — — — 1872
The 1861 1866
Until recently the 1869 1872

are the descendants 1866 1869 1872
have descended 1861

allusions to the subject in 1866 1869 1872
authors from 1861

writers, ∗ the first author who in modern times has treated it in a scientific spirit was Buffon. 1866 1869
period to that of Buffon, with whose writings I am not familiar, 1861
writers, ∗ the first author who in modern times has treated it in a scientific spirit was Buffon. 1872

1 blocks not present in 1861 1866; present in 1869 1872
But as his opinions fluctuated greatly at different periods, and as he does not enter on the causes or means of the transformation of species, I need not here enter on details.

works 1861 1866 1869
— — — — — — — — — — — — — — — — works 1872

AN HISTORICAL SKETCH OF THE RECENT PROGRESS OF OPINION ON THE ORIGIN OF SPECIES.
I
will
WILL
here
attempt to
a
....
give a
brief
brief,
but imperfect
but imperfect,
but imperfect,
sketch of the progress of opinion on the Origin of Species. The great majority of naturalists
believed
believe
that species
were
are
immutable productions, and
had
have
been separately created. This view has been ably maintained by many authors. Some few naturalists, on the other hand,
have believed
believe
that species undergo modification, and that the existing forms of life are the descendants by true generation
from
of
pre-existing forms. Passing over allusions to the subject in the classical writers, ∗ the first author who in modern times has treated it in a scientific spirit was Buffon.
Lamarck
Lamrack
Lamarck
Lamarck
was the first man whose conclusions on
this
the
subject excited much attention. This justly-celebrated
naturalists
naturalist
first published his views in
1801,
1801;
and he
be
he
much enlarged them in 1809 in his 'Philosophie Zoologique,' and subsequently, in 1815, in
his
the
Introduction to his
'Hist,
'Hist.
Nat. des Animaux sans
Vertébres.'
Vertèbres.'
In these works he upholds the doctrine that all species, including man, are descended from other species. He first did the eminent service of arousing attention to the probability of all change in the
organic
organic,
as well as in the inorganic
world
world,
being the result of law, and not of