In this comprehensive history of evolutionism, C. Leon Harris has combined primary source readings with clear, pertinent background information, to provide a solid basic understanding of the ways scientists have arrived at today’s views of evolution. Harris describes the major contributors to the theory of evolutionism, placing each in the context of the general cultural influences to which he was exposed. Each chapter also contains an explanation of the philosophical basis of the scientific approach of the period in question. A lengthy bibliography provides direction for further reading on this important and timely subject.