CHAPTER 18.――MILL’S FIVE SPECIAL METHODS OF OBSERVATION AND
EXPERIMENT. 1. Aim of Five Methods. 2. Method of Agreement. 3. Method of Difference. 4. The Joint Method of Agreement and Difference. 5. The Method of Concomitant Variations. 6. The Method of Residues. 7. General Purpose and Unity of Five Methods. 8. Outline. 9. Summary. 10. Review Questions. 11. Questions for Original Thought and Investigation.