Chapters in this book

1. Frontmatter i
2. Contents vii
3. Preface ix
4. I. Explorations into Natural History and Development
5. 1. Growing Up and Early Research 3
6. 2. The Age of Development 15
7. 3. Becoming an Embryologist: Insect Development 29
8. 4. Studies in Descent, Part I: 1863–1876 50
9. 5. Studies in Descent, Part II: 1873–1876 91
10. 6. Daphnia Research and the Ecology of Lakes 123
11. 7. From Germ Layers to the Germ-Plasm: The Study of Hydromedusae, 1877–1883 147
12. 8. From Egg to Heredity: 1876–1885 179
13. 9. A Perspective on Heredity 201
14. 10. Carl Nägeli and Inter- and Intragenerational Continuity 224
15. 11. The Emergence of Nuclear Cytology 238
16. II. An Architectonic View of Heredity
17. 12. A New Perspective on Heredity: Continuity and Heredity 277
18. 13. Transmission of Adaptations and Evolution: 1885–1890 311
19. 14. Polar Body Research: 1887–1891 345
20. 15. Protozoa and Amphimixis 361
21. 16. A Model for Heredity: Das Keimplasma, 1892 387
22. 17. Controversies and Adjustments: 1893–1896 431
23. 18. Th e Germ-Plasm and the Diversity of Living Phenomena: 1890–1900 470
24. 19. Seasonal Dimorphism in Butterflies and Parthenogenesis of Drones 489
25. 20. Adapting the Germ-Plasm: 1900–1914 506
26. 21. A Mechanical Model for Evolution 547
27. Epilogue 569
28. Appendix: Works by August Weismann 575
29. Notes 583
30. Acknowledgments 681
31. Index 685