  Bacon still presents a similar line of argument to his reader in 1623, namely in De Augmentis (Book V, Chap. 4; see Bacon IV [1901], 428–34). Judgment by syllogism presupposes—in a mode agreeable to the human mind—mediated proof, which, unlike in induction, does not start from sense in primary objects. In order to control the workings of the mind, syllogistic judgment refers to a fixed frame of reference or principle of knowledge as the basis for “all the variety of disputations” (Bacon IV [1901], 491). The reduction of propositions to principles leads to the middle term. Bacon deals here with the art of judgment in order to assign a systematic position to the idols. Within this art he distinguishes the ‘Analytic’ from the detection of fallacies (sophistical syllogisms). Analytic works with “true forms of consequences in argument” (Bacon IV [1901], 429), which become faulty by variation and deflection. The complete doctrine of detection of fallacies, according to Bacon, contains three segments: