CHAPTER VII.

THE RULES OF INFERENCE IN PROBABILITY.

§ 1. Nature of these inferences. 2. Inferences by addition and subtraction. 3. Inferences by multiplication and division. 4-6. Rule for independent events. 7. Other rules sometimes introduced. 8. All the above rules may be interpreted subjectively, i.e. in terms of belief. 9-11. Rules of so-called Inverse Probability. 12, 13. Nature of the assumption involved in them: 14-16. Arbitrary character of this assumption. 17, 18. _Physical illustrations._