List of Illustrations Introduction Part I The History of the Theory of Evolution 1. The Early Period of the Idea of Evolution (approx. 1600-1730) Raleigh, Hale, Leibniz, de Maillet 2. Linné (1707-1778) and Buffon (1707-1788) 3. In the Period 1770-1805 the Constancy of Species was accepted as a Scientific View. Only the Natural Philosophers Treviranus and Erasmus Darwin advocated The Theory of Evolution 4. The additional Knowledge gained in the Nineteenth Century did not further Ideas on Descent—Cuvier, von Baer 5. Summary of Arguments for and against the Theory of Evolution 6. Sentimental Reasons against the Theory of Evolution 7. The Three Followers of the Theory of Evolution known before 1859: Lamarck, Chambers, Geoffroy St. Hilaire 8. Further (up to 1859 unknown) Followers of the Theory of Evolution—Schleiden, von Unger, Schaaffhausen, Spencer 9. In the last Decades before 1859 the Hypothesis of Creation of all Species was generally accepted Part II The Basis and Development of the Theories of Evolution and Natural Selection by Darwin Introduction 10. How Darwin arrived at the Theory of Evolution 11. Basis of the Theory of Natural Selection 12. The History of the Theory of Natural Selection 13. Development of the Theories of Evolution and Natural Selection Evidence that Sufficient Variations Occur in Nature Evidence of the Harshness of the Struggle for Life Solution of the Counter-arguments (Arguments against Descent) Addition of New Evidences to the Known Proofs for Evolution Part III 14.Darwin Promoted or Established New Branches of Biology Researches on Domesticated Animals and Cultivated Plants The Expression of the Emotions The Problem of Instinct Darwin: A Modern Animal Psychologist The Theory of the Causes of Variability The Distribution of Animals and Plants on Earth Sexual Selection The Biology of Flowers 15. The Development of the Main Work (the Monograph on Cirripedia) Alfred Russell Wallace 16. Darwin's Life Darwin's Paternal Ancestors Darwin's Maternal Ancestors The Life of Charles Darwin 17. Fundamental Dispositions, Faculties and Characteristics which contributed to Darwin's Great Achievements His Love and Tendency for Science Darwin's Power of Observation Collaboration with other Scientists Discussions His Clarity Darwin's Non-dogmatic Thinking No Tendency for Philosophizing His Single-mindedness His Equanimity 18. Darwin's Collaboration with Hooker 19. Other Factors which Contributed to Darwin's Achievements Darwin's Favourable Financial Situation Propitious Conditions for Natural Sciences A Happy Marriage and an Harmonious Family Life Family Life Darwin's Circle of Friends Joseph Hooker (1814-1911) Asa Gray (1810-1888) Thomas Huxley (1825-1895) Charles Lyell (1797-1875) Supplement Darwin's Theories and Religion The Works of Darwin published as Books Name Index Subject Index