<P> Lyell's interpretation of geologic change as the steady accumulation of minute changes over enormously long spans of time, a central theme in the Principles, influenced the 22 - year - old Charles Darwin, who was given Volume 1 of the first edition by Robert FitzRoy, captain of HMS Beagle, just before they set out (December 1831) on their voyage on the Beagle . On their first stop ashore at St Jago, Darwin found rock formations which - seen "through Lyell's eyes" - gave him a revolutionary insight into the geological history of the island, an insight he applied throughout his travels . While in South America, Darwin received Volume 2, which rejected the idea of organic evolution, proposing "Centres of Creation" to explain diversity and territory of species . Darwin's ideas gradually moved beyond this, but in geology he operated very much as Lyell's disciple and sent home extensive evidence and theorising supporting Lyell's uniformitarianism, including Darwin's ideas about the formation of atolls . </P> <Ul> <Li> 1st edition, London: John Murray . Vol 1, Jan. 1830 - Vol 2, Jan. 1832 - Vol 3, May 1833 </Li> <Li> 2nd edition, London: John Murray . Vol 1, 1832 - Vol 2, Jan. 1833 </Li> <Li> 3rd edition, 4 vols . London: John Murray . May 1834 </Li> <Li> 4th edition, 3 vols . London: John Murray, 1835 . Vol 1 - Vol 2 - Vol 3 </Li> <Li> 5th edition, 4 vols . London: John Murray, 1837 . Vol 1 - Vol 2 - Vol 3 - Vol 4 </Li> <Li> 6th edition, 3 vols . June 1840 </Li> <Li> 7th edition, 1 vol . Feb. 1847 </Li> <Li> 8th edition, 1 vol . May 1850 </Li> <Li> 9th edition, 1 vol. 1853 </Li> <Li> 10th edition, 2 vols. 1866--68 </Li> <Li> 11th edition, 2 vols. 1872 </Li> <Li> 12th edition, 2 vols. 1875 . Vol 1 - Vol 2 (published posthumously) </Li> </Ul> <Li> 1st edition, London: John Murray . Vol 1, Jan. 1830 - Vol 2, Jan. 1832 - Vol 3, May 1833 </Li> <Li> 2nd edition, London: John Murray . Vol 1, 1832 - Vol 2, Jan. 1833 </Li>

Who wrote principles of geology and emphasized the principle of uniformitarianism