Pp. 78-89.
§ 44. In the third figure the object is the middle term; two
predicates are found in it and thus united, making a definition of
a new subclass; the valid modes of the third figure; explanation
of the words used to name the modes; significance of the letters
b, c, d, f, and s, p, m; baroco and bocardo explained. § 45. How
the third figure in sense-perception presupposes the action of the
second figure. § 46. After the action of the third figure the first
and second verify by new observations, and store up experience in
regard to the existence of few or many examples of the new class.
§ 47. Causality perceptions through third figure. § 48. Subjec-
tive and objective causal relations in the third figure suggest
names for subclasses. § 49. Mistake of ordinary psychology in
explaining the formation of general ideas; formed by division of
still more general ideas, which are vague and empty till they re-
ceive content by recognising their subclasses through the third
figure. 50. Natural system of mnemonics arises through the
third figure; peculiarities observed, aid the memory. § 51. Ex-
amples of subjective and objective use of the causal idea in nam-
ing classes and subclasses. § 52. The third figure produces a
definition; experience may discover many or few individuals that
fall under it; summary statement of the three figures. § 53. How
the subclasses arise by division from the more general classes; the
particular categories from the universal, and all from the self or
ego as the summum genus; Hegel's logic.