"The revocation of the two terms of a Proposition to their true relation; a proposition being always an _equation_ of its subject and its predicate. "The consequent reduction of the Conversion of Propositions from three species to one--that of Simple Conversion. "The reduction of all the _General Laws_ of Categorical Syllogisms to a single Canon. "The evolution from that one canon of all the Species and varieties of Syllogisms. "The abrogation of all the _Special Laws_ of Syllogism. "A demonstration of the exclusive possibility of Three syllogistic Figures; and (on new grounds) the scientific and final abolition of the Fourth. "A manifestation that Figure is an unessential variation in syllogistic form; and the consequent absurdity of Reducing the syllogisms of the other figures to the first. "An enouncement of _one Organic Principle_ for each Figure. "A determination of the true number of the Legitimate Moods; with "Their amplification in number (thirty-six); "Their numerical equality under all the figures; and "Their relative equivalence, or virtual identity, throughout every schematic difference. "That, in the second and third figures, the extremes holding both the same relation to the middle term, there is not, as in the first, an opposition and subordination between a term major and a term minor, mutually containing and contained, in the counter wholes of Extension and Comprehension. "Consequently, in the second and third figures, there is no determinate major and minor premise, and there are two indifferent conclusions: whereas in the first the premises are determinate, and there is a single proximate conclusion."