The descent of man, and selection in relation to sex

Part I: The descent or origin of man

The evidence of the descent of man from some lower form

On the manner of development of man from some lower form

Comparison of the mental powers of man and the lower animals

On the development of the intellectual and moral faculties during primeval and civilized times

On the affinities and genealogy of man

On the races of man

Part II: Sexual selection

Principles of sexual selection

Secondary sexual characters in the lower classes of the animal kingdom

Secondary sexual characters of insects

Secondary sexual characters of fishes, amphibians, and reptiles

Secondary sexual characters of birds

Secondary sexual characters of mammals

Part III: Sexual selection in relation to man, and conclusion.