jan 1, 1830 - Lyell describes immense age of Earth (c. 1830)
Most naturalists of the early 19th century think that the history of Earth -- and life on it -- spans vast ages. Charles Lyell helps further this idea by arguing that slow-moving gradual processes explain Earth's geology. He echoes his mentor, James Hutton, who wrote that Earth's history has "No vestige of a beginning. Now prospect of an end." And Lyell becomes a mentor himself to Charles Darwin. Darwin will apply Lyell's notion of gradual change to his theory of how species evolve.
Added to timeline:
Rise of Evolution Timeline