Transcript Charles Lyell & Jean-Baptiste Lamarck

Charles Lyell
 Charles Lyell was born in 1797, and died in
1875
 Charles Lyell was a lawyer and Geologist,
known for his sizable contributions to the
field.
 He formulated a theory called
Uniformitarianism with the help of James
Hutton.
James Hutton
 James Hutton was a Scottish geologist, physician and
naturalist born in 1726
 He is known popularly as “The father of modern geology”
 He was responsible for sizable contributions to the field of
geology such as: Uniformitarianism & Plutonism
Uniformitarianism
 This was a theory created by Charles Lyell
and James Hutton, a Geologist like Lyell
 Geological changes are slow continuous
rather than catastrophic, the small
changes would start to build over time
into much greater changes in the land.
 Contrary to the current (at that time)
belief that the earth was shaped quickly
by violent events.
Key Points of Uniformitarianism
 This was one of the first theories of geological change that
suggested earth was more than 6000 years old
 When James Hutton first came up with the theory it wasn’t
recognized for some time until Charles Lyell made revisions
and publicized it more.
 To this day many of the key points of this theory still hold true,
especially the aspects of geological change.
Charles Darwin & Charles Lyell
 Charles Darwin was also influenced greatly by Charles
Lyell and his theory of uniformitarianism.
 He thought that even though the theory was expressed
about geological features that it could also hold true to the
evolution of populations.
 This turned out to have some truth in it. Because just as
land living organisms change very slowly in small steps.
Uniformitariansim Video
 http://www.youtube.com/watch?v=H9iuiBPc0tE
 Note: He sounds like Crocodile Dundee…
Jean-Baptiste Lamarck
 Jean-Baptiste Lamarck was a
Biologist born in 1744
 Jean-Baptiste Lamarck outlined
his ideas about changes in
species over time by comparing
there current forms with their
fossil forms
Inheritance of acquired
characteristics
 Lamarck hypothesized that the organisms would become
progressively better adapted to their environments. Ex:
The giraffe getting a progressively long neck in order to
feed off trees.
 Inheritance of acquired characteristics: the idea that
characteristics acquired doing an organisms lifetime can
be passed on to its offspring
Acceptance of the Theory
 Many people at the time didn’t accept Lamarck’s theory
because they believed that species stayed the same and
never changed.
 This was because at the time there was very little
knowledge of cell biology and how adaptive they really
were.
 This belief would be more extensively disproved by
Charles Darwin.
Charles Darwin and Lamarck
 Charles Darwin, who created the generally accepted
theory of evolution by natural selection found there to be
a lot of truth in what Lamarck had to say.
 He eventually used a slightly altered version of Lamarck’s
theory as he created the theory of evolution.
 There is no doubt that Lamarck greatly influenced Charles
Darwin and contributed a great deal towards what we now
know as the theory of evolution.
Lamarck Video
 http://www.youtube.com/watch?v=4HBdxDBqfHc&featur
e=related
Bibliography

"AboutDarwin.com - Who was Darwin."AboutDarwin.com - Home Page. N.p., n.d. Web. 21 Nov. 2012.
<http://www.aboutdarwin.com/darwin/WhoWas.html>.


Mathoz, Edmond A.. "James Hutton: The founder of modern Geology." amnh.org. N.p., n.d. Web. 21 Nov.
2012. <www.amnh.org/education/resources/rfl/web/essaybooks/earth/p_hutton.html>.


Neymen, Greg. "Old Earth Creation Science, Catastrophism or Uniformitarianism?." Creation Science - Old
Earth Ministries. N.p., n.d. Web. 21 Nov. 2012. <http://www.oldearth.org/catastrophism.htm>.


"Nonsense in schoolbooks: 'The Imaginary Lamarck'." The Textbook League. N.p., n.d. Web. 21 Nov. 2012.
<http://www.textbookleague.org/54marck.htm>.


Smith, William . "Uniformitarianism: Charles Lyell." Understanding Evolution. N.p., n.d. Web. 21 Nov. 2012.
<http://evolution.berkeley.edu/evolibrary/a
Video citations

 Seconds, Science in . "Science in Seconds - Lamarckian
Evolution -YouTube." YouTube. N.p., n.d. Web. 23 Nov. 2012.
<http://www.youtube.com/watch?v=4HBdxDBqfHc&feature=re
lated>.


 Schist, ALoadOf. "An introduction to uniformitarianism YouTube." YouTube. N.p., n.d. Web. 23 Nov. 2012.
<http://www.youtube.com/watch?v=H9iuiBPc0tE>.

Thanks For Watching
 Please enjoy the rest of your day.