Preface
1. Introduction
2. Beyond Language
3. What an Individual Is
4. What an Individual Is Not
5. Some Definitions of 'Definition'
6. Definitions of 'Species' and Some Other Terms
7. Some Alternatives to the Biological Species Concept
8. Objections to the Individuality Thesis
9. Working Out the Analogies
10. Why Do Species Exist?
11. Objectives and Subjective Systems
12. Natural and Artificial Systems
13. Characters and Homologies
14. Laws of Nature
15. The Principles of Historical Inference
16. Embryology as History and as Law
17. The Artifactual Basis of Macroevolution
18. Toward a Real History of Life
Appendix: Aphorisms, Summary and Glossographic
References
Index