The Descent of Man
Darwin (Charles)
Source: Darwin - Britannica Great Books Vol 49 - The Origin of Species, The Descent of Man
Paper - Abstract

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Contents

    Part One: The Descent or Origin of Man
    INTRODUCTION, 253
  1. EVIDENCE OF THE DESCENT OF MAN FROM SOME LOWER FORM, 255
    Nature of the evidence bearing on the origin of man. Homologous structures in man and the lower animals. Miscellaneous points of correspondence. Development. Rudimentary structures, muscles, sense-organs, hair, bones, reproductive organs, &c. The bearing of these three great classes of facts on the origin of man
  2. ON THE MANNER OF DEVELOPMENT OF MAN FROM SOME LOWER FORM, 266
    Variability of body and mind in man. Inheritance. Causes of variability. Laws of variation the same in man as in the lower animals. Direct action of the conditions of life. Effects of the increased use and disuse of parts. Arrested development. Reversion. Correlated variation. Rate of increase. Checks to increase. Natural selection. Man the most dominant animal in the world. Importance of his corporeal structure. The causes which have led to his becoming erect. Consequent changes of structure. Decrease in size of the canine teeth. Increased size and altered shape of the skull. Nakedness. Absence of a tail. Defenseless condition of man
  3. COMPARISON OF THE MENTAL POWERS OF MAN AND THE LOWER ANIMALS, 287
    The difference in mental power between the highest ape and the lowest savage, immense. Certain instincts in common. The emotions. Curiosity. Imitation. Attention. Memory. Imagination. Reason. Progressive improvement. Tools and weapons used by animals. Abstraction, self-consciousness1. Language. Sense of beauty. Belief in God, spiritual agencies, superstitions.
  4. COMPARISON OF THE MENTAL POWERS OF MAN AND THE LOWER ANIMALS, Continued, 304
    The moral sense. Fundamental proposition. The qualities of social animals. Origin of sociability. Struggle between opposed instincts. Man a social animal. The more enduring social instincts conquer other less persistent instincts. The social virtues alone regarded by savages. The self-regarding virtues acquired at a later stage of development. The importance of the judgment of the members of the same community on conduct. Transmission of moral tendencies. Summary
  5. ON THE DEVELOPMENT OF THE INTELLECTUAL AND MORAL FACULTIES DURING PRIMEVAL AND CIVILISED TIMES, 320
    Advancement of the intellectual powers through natural selection. Importance of imitation. Social and moral faculties. Their development within the limits of the same tribe. Natural selection as affecting civilised nations. Evidence that civilised nations were once barbarous
  6. ON THE AFFINITIES AND GENEALOGY OF MAN, 331
    Position of man in the animal series. The natural system genealogical. Adaptive characters of slight value. Various small points of resemblance between man and the quadrumana. Rank of man in the natural system. Birthplace and antiquity of man. Absence of fossil connecting links. Lower stages in the genealogy of man, as inferred, firstly from his affinities and secondly from his structure. Early androgynous condition of the vertebrata. Conclusion
  7. ON THE RACES OF MAN, 342
    The nature and value of specific characters. Application to the races of man. Arguments in favour of, and opposed to, ranking the so-called races of man as distinct species. Sub-species. Monogenists and polygenists. Convergence of character. Numerous points of resemblance in body and mind between the most distinct races of man. The state of man when he first spread over the earth. Each race not descended from a single pair. The extinction of races. The formation of races. The effects of crossing. Slight influence of the direct action of the conditions of life. Slight or no influence of natural selection. Sexual selection

    Part Two: Sexual Selection
  8. PRINCIPLES OF SEXUAL SELECTION, 364
    Secondary sexual characters. Sexual selection. Manner of action. Excess of males. Polygamy. The male alone generally modified through sexual selection. Eagerness of the male. Variability of the male. Choice exerted by the female. Sexual compared with natural selection. Inheritance, at corresponding periods of life, at corresponding seasons of the year, and as limited by sex. Relations between the several forms of inheritance. Causes why one sex and the young are not modified through sexual selection. Supplement on the proportional numbers of the two sexes throughout the animal kingdom. The proportion of the sexes in relation to natural selection
  9. SECONDARY SEXUAL CHARACTERS IN THE LOWER CLASSES OF THE ANIMAL KINGDOM, 395
    These characters are absent in the lowest classes. Brilliant colours. Mollusca. Annelids. Crustacea, secondary sexual characters strongly developed; dimorphism; colour; characters not acquired before maturity. Spiders, sexual colours of; stridulation by the males. Myriapoda
  10. SECONDARY SEXUAL CHARACTERS OF INSECTS, 403
    Diversified structures possessed by the males for seizing the females. Differences between the sexes, of which the meaning is not understood. Difference in size between the sexes. Thysanura. Diptera. Hemiptera. Homoptera, musical powers possessed by the males alone. Orthoptera, musical instruments of the males, much diversified in structure; pugnacity; colours. Neuroptera, sexual differences in colour. Hymenoptera, pugnacity and colours. Coleoptera, colours; furnished with great horns, apparently as an ornament; battles; stridulating organs generally common to both sexes
  11. INSECTS, Continued. ORDER LEPIDOPTERA (BUTTERFLIES AND MOTHS), 422
    Courtship of butterflies. Battles. Ticking noise. Colours common to both sexes, or more brilliant in the males. Examples. Not due to the direct action of the conditions of life. Colours adapted for protection. Colours of moths. Display. Perceptive powers of the lepidoptera. Variability. Causes of the difference in colour between the males and females. Mimicry, female butterflies more brilliantly coloured than the males. Bright colours of caterpillars. Summary and concluding remarks on the secondary sexual characters of insects. Birds and insects compared
  12. SECONDARY SEXUAL. CHARACTERS OF FISHES, AMPHIBIANS, AND REPTILES, 435
    Fishes: Courtship and battles of the males. Larger size of the females. Males, bright colours and ornamental appendages; other strange characters. Colours and appendages acquired by the males during the breeding season alone. Fishes with both sexes brilliantly coloured. Protective colours. The less conspicuous colours of the female cannot be accounted for on the principle of protection. Male fishes building nests, and taking charge of the ova and young. Amphibians: Differences in structure and colour between the sexes. Vocal organs. Reptiles: Chelonians. Crocodiles. Snakes, colours in some cases protective. Lizards, battles of. Ornamental appendages. Strange differences in structure between the sexes. Colours. Sexual differences almost as great as with birds
  13. SECONDARY SEXUAL CHARACTERS OF BIRDS..
    Sexual differences. Law of battle. Special weapons. Vocal organs. Instrumental music. Love antics and dances. Decorations, permanent and seasonal. Double and single annual moults. Display of ornaments by the males
  14. BIRDS, Continued, 477
    Choice exerted by the female. Length of courtship. Unpaired birds. Mental qualities and taste for the beautiful. Preference or antipathy shewn by the female for particular males. Variability of birds. Variations sometimes abrupt. Laws of variation. Formation of ocelli. Gradations of character. Case of peacock, argus pheasant, and urosticte
  15. BIRDS, Continued, 500
    Discussion as to why the males alone of some and both sexes of others, are brightly coloured. On sexually-limited inheritance, as applied to structures and to brightly-coloured plumage. Nidification in relation to colour. Loss of nuptial plumage during the winter
  16. BIRDS, Concluded, 511
    The immature plumage in relation to the character of the plumage in both sexes when adult. Six classes of cases. Sexual differences between the males of closely-allied or representative species. The female assuming the characters of the male. Plumage of the young in relation to the summer and winter plumage of the adults. On the increase of beauty in the birds of the world. Protective colouring. Conspicuously-coloured birds. Novelty appreciated. Summary of the four chapters on birds
  17. SECONDARY SEXUAL CHARACTERS OF MAMMALS, 539,
    The law of battle. Special weapons, confined males. Cause of absence of weapons in the female. Weapons common to both sexes, yet primarily acquired by the male. Other uses of such weapons. Their high importance. Greater size of the male. Means of defence. On the preference shown by either sex in the pairing of quadrupeds
  18. SECONDARY SEXUAL CHARACTERS OF MAMMALS, Continued, 546
    Voice. Remarkable sexual peculiarities in seals. Odour. Development of the hair. Colour of the hair and skin. Anomalous case of the female being more ornamented than the male. Colour and ornaments due to sexual selection. Colour acquired for the sake of protection. Colour, though common to both sexes, often due to sexual selection. On the disappearance of spots and stripes in adult quadrupeds. On the colours and ornaments of the quadrumana. Summary

    Part Three: Sexual Selection in Relation to Man and Conclusion
  19. SECONDARY SEXUAL CHARACTERS OF MAN, 562
    Differences between man and woman. Causes of such differences and of certain characters common to both sexes. Law of battle. Differences in mental powers, and voice. On the influence of beauty in determining the marriages of mankind. Attention paid by savages to ornaments. Their ideas of beauty in women. The tendency to exaggerate each natural peculiarity
  20. SECONDARY SEXUAL CHARACTERS OF MAN, Continued, 578
    On the effects of the continued selection of women according to a different standard of beauty in each race. On the causes which interfere with sexual selection in civilised and savage nations. Conditions favourable to sexual selection during primeval times. On the manner of action of sexual selection with mankind. On the women in savage tribes having some power to choose their husbands. Absence of hair on the body, and development of the beard. Colour of the skin. Summary
  21. GENERAL SUMMARY AND CONCLUSION, 590
    Main conclusion that man is descended from some lower form. Manner of development. Genealogy of man. Intellectual and moral faculties. Sexual selection. Concluding remarks
  22. SUPPLEMENTAL NOTE, 598

Comment:

Britannica Great Books Vol 49

Text Colour Conventions (see disclaimer)

  1. Blue: Text by me; © Theo Todman, 2018
  2. Mauve: Text by correspondent(s) or other author(s); © the author(s)



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