I. Natural Kinds and Essentialism. 1. Natural Kinds. 2. Species. 3. Essences

II. Reductionism. 4. Reductionism and Materialism. 5. Reductionism in Biology 1: Ecology. 6. Reductionism in Biology 2: Genetics. 7. Reductionism and the Mental

III. The Limits of Causality. 8. Determinism. 9. Probabilistic Causality

IV. Some Consequences of Disorder. 10. The Disunity of Science. 11. Science and Values. Notes. Bibliography. Sources.