Darwinism (book)

[2] In Darwinism's fifteen chapters, Alfred Russel Wallace sets out his understanding of the theory of evolution by natural selection.

He then examines the purpose of animal coloration, including camouflage and mimicry, arguing that these are evidence of natural selection.

Animal coloration and ornamentation that differs between the sexes are discussed, though he largely disagrees with Darwin's theory of sexual selection.

In the preface to Darwinism, Wallace had used the term pure-Darwinism which proposed a "greater efficacy" for natural selection.

The book is notable for defending August Weismann's theory of heredity and rejecting the inheritance of acquired characteristics and the concept of sexual selection which Darwin gave credence to.