The Descent of Man, and Selection in Relation to Sex. Charles Darwin

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       BRIGHT COLOURS OF CATERPILLARS.

       A SUMMARY AND CONCLUDING REMARKS ON INSECTS.

       CHAPTER XII. — SECONDARY SEXUAL CHARACTERS OF FISHES, AMPHIBIANS, AND REPTILES.

       AMPHIBIANS.

       URODELA.

       ANURA OR BATRACHIA.

       REPTILES.

       CHELONIA.

       CROCODILIA.

       OPHIDIA.

       LACERTILIA.

       CHAPTER XIII. — SECONDARY SEXUAL CHARACTERS OF BIRDS.

       LAW OF BATTLE.

       VOCAL AND INSTRUMENTAL MUSIC.

       LOVE ANTICS AND DANCES.

       DECORATION.

       DISPLAY BY MALE BIRDS OF THEIR PLUMAGE.

       CHAPTER XIV. — BIRDS—continued.

       LENGTH OF COURTSHIP.

       UNPAIRED BIRDS.

       MENTAL QUALITIES OF BIRDS, AND THEIR TASTE FOR THE BEAUTIFUL.

       PREFERENCE FOR A PARTICULAR MALES BY THE FEMALES.

       GRADATION OF SECONDARY SEXUAL CHARACTERS.

       ARGUS PHEASANT.

       CHAPTER XV. — Birds—continued.

       CHAPTER XVI. — BIRDS—concluded.

       RULES OR CLASSES OF CASES.

       ON THE COLOUR OF THE PLUMAGE IN RELATION TO PROTECTION.

       A SUMMARY OF THE FOUR CHAPTERS ON BIRDS.

       CHAPTER XVII. — SECONDARY SEXUAL CHARACTERS OF MAMMALS.

       CHOICE IN PAIRING BY EITHER SEX OF QUADRUPEDS.

       CHAPTER XVIII. — SECONDARY SEXUAL CHARACTERS OF MAMMALS—continued.

       ODOUR.

       DEVELOPMENT OF THE HAIR.

       COLOUR OF THE HAIR AND OF THE NAKED SKIN.

       EQUAL TRANSMISSION OF ORNAMENTAL CHARACTERS TO BOTH SEXES.

       QUADRUMANA.

       A SUMMARY.

       PART III. — SEXUAL SELECTION IN RELATION TO MAN, AND CONCLUSION.

       CHAPTER XIX. — SECONDARY SEXUAL CHARACTERS OF MAN.

       LAW OF BATTLE.

       DIFFERENCE IN THE MENTAL POWERS OF THE TWO SEXES.

       VOICE AND MUSICAL POWERS.

       THE INFLUENCE OF BEAUTY IN DETERMINING THE MARRIAGES OF MANKIND.

       CHAPTER XX. — SECONDARY SEXUAL CHARACTERS OF MAN—continued.

       INFANTICIDE.

       EARLY BETROTHALS AND SLAVERY OF WOMEN.

       THE MANNER OF ACTION OF SEXUAL SELECTION WITH MANKIND.

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