THE DESCENT OF MAN AND SELECTION IN RELATION TO SEX By Charles Darwin CONTENTS PREFACE TO THE SECOND EDITION. DETAILED TABLE OF CONTENTS THE DESCENT OF MAN; AND SELECTION IN RELATION TO SEX. INTRODUCTION. PART I. THE DESCENT OR ORIGIN OF MAN. CHAPTER I. THE EVIDENCE OF THE DESCENT OF MAN FROM SOME LOWER FORM. CHAPTER II. — ON THE MANNER OF DEVELOPMENT OF MAN FROM SOME LOWER FORM. CHAPTER III. — COMPARISON OF THE MENTAL POWERS OF MAN AND THE LOWER ANIMALS. CHAPTER IV. — COMPARISON OF THE MENTAL POWERS OF MAN AND THE LOWER ANIMALS, continued. CHAPTER V. — ON THE DEVELOPMENT OF THE INTELLECTUAL AND MORAL FACULTIES DURING PRIMEVAL AND CIVILISED TIMES. CHAPTER VI. — ON THE AFFINITIES AND GENEALOGY OF MAN. CHAPTER VII. — ON THE RACES OF MAN. PART II. SEXUAL SELECTION. CHAPTER VIII. — PRINCIPLES OF SEXUAL SELECTION. CHAPTER IX. — SECONDARY SEXUAL CHARACTERS IN THE LOWER CLASSES OF THE ANIMAL KINGDOM. CHAPTER X. — SECONDARY SEXUAL CHARACTERS OF INSECTS. CHAPTER XI. — INSECTS, continued. ORDER LEPIDOPTERA. (BUTTERFLIES AND MOTHS.) CHAPTER XII. — SECONDARY SEXUAL CHARACTERS OF FISHES, AMPHIBIANS, AND REPTILES. CHAPTER XIII. — SECONDARY SEXUAL CHARACTERS OF BIRDS. CHAPTER XIV. — BIRDS—continued. CHAPTER XV. — BIRDS—continued. CHAPTER XVI. — BIRDS—concluded. CHAPTER XVII. — SECONDARY SEXUAL CHARACTERS OF MAMMALS. CHAPTER XVIII. — SECONDARY SEXUAL CHARACTERS OF MAMMALS, continued. PART III. — SEXUAL SELECTION IN RELATION TO MAN, AND CONCLUSION. CHAPTER XIX. — SECONDARY SEXUAL CHARACTERS OF MAN. CHAPTER XX. — SECONDARY SEXUAL CHARACTERS OF MAN, continued. CHAPTER XXI. — GENERAL A SUMMARY AND CONCLUSION. PREFACE TO THE SECOND EDITION. During the successive reprints of the first edition of this work, published in 1871, I was able to introduce several important corrections; and now that more time has elapsed, I have endeavoured to profit by the fiery ordeal through which the book has passed, and have taken advantage of all the criticisms which seem to me sound. I am also greatly indebted to a large number of correspondents for the communication of a surprising number of new facts and remarks. These have been so numerous, that I have been able to use only the more important ones; and of these, as well as of the more important corrections, I will append a list. Some new illustrations have been introduced, and four of the old drawings have been replaced by better ones, done from life by Mr. T.W. Wood. I must especially call attention to some observations which I owe to the kindness of Prof. Huxley (given as a supplement at the end of Part I.), on the nature of the differences between the brains of man and the higher apes. I have been particularly glad to give these observations, because during the last few years several memoirs on the subject have appeared on the Continent, and their importance has been, in some cases, greatly exaggerated by popular writers.