On the Origin of Species

Charles Darwin’s On The Origin of Species , in which he writes of his theories of evolution by natural selection, is one of the most important works of scientific study ever published. This unabridged edition also includes a rich selection of primary source substantial selections from Darwin’s other works ( Autobiography , notebooks, letters, Voyage of the Beagle , and The Descent of Man ) and selections from Darwin’s sources and contemporaries (excerpts from Genesis, Paley, Lamarck, Spencer, Lyell, Malthus, Huxley, and Wallace).