Inversion, [183].
Inverted Proposition, [137].
Irregular Arguments, [258].
Irrelevant Conclusion, [337].
J
Jevons Quoted, [4], [25], [387], [468].
Joint Method of Agreement and Difference, [397].
Judgment, Definition of, [17];
a Thought Product, [22];
Most Fundamental Element in Thinking, [23].