Ignoratio Elenchi, Fallacy of, 865.
Ignotum per ignotius, 383.
Illicit Process, Fallacy of, 586.
Immediate Inference, 442 sqq. by added determinants, 535. by complex conception, 537. applied to complex propositions, 701.
Immediate Inference, compound forms of, 503. partly conjunctive syllogisms regarded as, 753. by conversion, 479. disjunctive syllogisms regarded as, 770. by opposition, 462. by permutation, 496.
Induction, differing from Deduction, 430 sqq.
Inductive Logic, 2, 204.
Inferences in general, 426. classification of, 441. deductive, 442. inductive, 430.
Intimae species, 405.
Intension of Terms, 150, 166.