In 1830–33, Charles Lyell laid the foundations of evolutionary biology with Principles of Geology, a pioneering book that Charles Darwin took with him on the Beagle. Volume 1 discusses the effects on the Earth's crust of climate change, running water, volcanic eruptions and earthquakes, and supports James Hutton's theory of uniformitarianism, now a guiding principle of geology. Volume 2 (1832) focuses on plants and animals, their distribution, diffusion, migrations and adaptation to changing habitats, and considers the theories of Lamarck, while Volume 3 periodises sedimentary and volcanic rock formations and considers the marine fossil record. The books are generously illustrated and thoroughly indexed. Lyell writes with infectious enthusiasm, conveying the excitement of his fieldwork and discoveries in this landmark book, which remains of interest to geologists and historians of science alike.