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First Notions pages 125
On ObjeBsJdeasand Names pages 2646
On Propositions pages 5476
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Accordingly admit affirmative alteration animal applied argument Aristotelian Aristotle assertion AUGUSTUS DE MORGAN called chapter cloth clusion colour common complex syllogism conclusion connexion consequence considered contained contradiction contranominal contrary convertible copula definite denial denote deny disjunctive distinction exist expressed extension quantity external fallacy false fame thing figure genus gism give idea identical ignoratio elenchi inconvertibles induction inference knowledge language laws less letters logic logicians matter meaning middle term mind mode necessary notion number of Xs object particular petitio principii preceding predicate premises probability prove quantification quantity question reader reason reference relation rule Sir William Hamilton sophism speak species spurious strengthened subcontrary subidentical subject and predicate supercontrary superidentical suppose symbol testimony third thought tion true truth universal universal proposition white ball word write Xs are Ys Ys are Xs