1. Hutton, 1785
PROPOSED:
Earth is shaped by geological forces that took place over extremely long period of time.
KNOWN AS GRADUALISM
Estimated Earth to be millions of years old.

2. Thomas Malthus, 1798 Essay on the Principle of Population
Predicted that human population will grow faster than the space and food supplies needed to sustain it

3. Jean – Baptiste Lamarck, 1809
Hypothesis: Inheritance of acquired traits
As any part of the body is used, it develops and enlarges. If it is not used, it weakens and becomes smaller.
The organism would then pass these changes to its offspring.

4. Lamarck, 1809
ALL organisms have innate tendency toward complexity and perfection
Ex: birds – use wings, over time they got bigger and better
Use and disuse
Inheritance of acquired traits – pass on trait to offspring
Ex: If you have big muscles now, you will give that to your offspring (is this right?)

5. Charles Lyell, 1833 Principles of Geology
Explain the past through actual observations of geological features
Ex: volcanoes ( past and present )

6. The Origin of Species Written November 24, 1859
Foundation of evolutionary biology
Collection of evidence
What might modern scientists learn today from Darwin’s collection of evidence?