This volume explores the logic and methodology of scientific inquiry rather than its substantive results.

1. Science and the Philosophy of Science.

2. Scientific Hypotheses: Discovery vs. Validation.

3. The Test of a Hypothesis: Its Logic and Its Force.

4. Conditions of Acceptability for Hypotheses and Theories.

5. Concept Formation.

6. Probability: Statistical and Inductive.

7. A Priori Knowledge in Science.

8. Modes of Scientific Explanation.

9. Science and Valuation.