The widespread doctrine of the four syllogistic figures concerns only the categorical inferences, and, although it is nothing more than an art for surreptitiously producing the illusion of more kinds of inference than that in the first figure by hiding immediate inferences (consequentiae immediatiae) among the premises of a pure syllogism, still it would not have achieved any special success by this alone if it had not succeeded in focusing attention exclusively on categorical judgments as those to which all others have to be related, which according to however, is false.