Disjunctive Syllogism, 760. canon of, 765. reduction of, 766. regarded as an immediate inference, 770. Distinction, 424. Distribution of Terms, 274. four rules for, 293. Divided whole, 393. Dividing members, 394. Division, 385 sqq. by dichotomy, 412. rules of, 395. Division, Fallacy of, 851. Division of Propositions, 206. of terms, 86. of things, 77. Enthymeme, incorrectly so-called, 557. Enumeration, 387, 422. Epicheirema, 803. Episyllogism, 802. 'E' Propositions, 260. conversion of, 490. Equivocation, Fallacy of, 845. Excluded Middle, Law of, 25 sqq., 502. Extension of Terms, 149 sqq., 166 sqq. Fallacy, 827 sqq. of ambiguity, 831. definition of, 828. formal, 838. logical, 836. material, 831, 836. of undisturbed middle, 585. Figure of Speech, Fallacy of, 857. Figures, of a Syllogism, 558. special canons of, 633. special rules of, 606. special uses of, 648. Formal Logic, 16. Four Terms, Fallacy of, 840. Fundamentum Divisionis, 391. Generalisation, 168. Genus, 318. as used by Aristotle, 336. cognate, 408. proximate, 420. subaltern, 406. summum, 167, 404. Heads of Predicables, 313. as given by Aristotle, 336. 'Ideas' of Plato, 52. Identity, Law of, 25 sqq. 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. Intuition, 232. Inverse Variation, Law of, 166. 'I' Propositions, 260. conversion of, 490. 'Judgement,' various meanings of, 32, 36. 'Law,' ambiguities of the word, 7 sqq. Major Premiss, 544. Major Term, 542. Many Questions, Fallacy of, 884. Mediate Inferences or Syllogisms, 444, 540 sqq. axioms of, 576. Membra Dividentia, 394. Middle Term, 541. position of, in a syllogism, 563. Minor Premiss, 545. Minor Term, 542. Modality, Question of, 196. Mode, the, 196. Moods of a Syllogism, 558. determination of the legitimate, 599. subaltern, 628. valid in the Four Figures, 621. mnemonics of, valid in Four Figures, 629. Name, definition of, 61. Negative Premisses and Conclusion, Fallacy of, 842. Nominalists, 50, 54. Non causa pro causa, Fallacy of, 883. Nouns, 62. Opposition, 449 sqq. contradictory, 457. contrary, 454. laws of, 464. subaltern, 456. sub-contrary, 455. 'O' Propositions, 260. conversion of, 491. Partition, 423. Permutation, 496 sqq. of Complex Propositions, 718. Petitio Principii, Fallacy of, 874.