Reduction of Syllogisms, nature of the process, [318]; direct and indirect reduction, [318], 9; direct reduction of Baroco and Bocardo, [323], 4; extension of the doctrine of reduction, [324], 5; is reduction an essential part of the doctrine of the syllogism, [325]–8; indirect reduction, [331]–7; reduction of conditional and hypothetical syllogisms, [351], 2; of mixed hypothetical syllogisms, [354].

Regressive Argument, [369].

Relation, Division of propositions according to, [82].

Relative Names, [63]–5.

Relatives, Logic of, [149]–51; [387], 8.

Relativity, Law of, [456].

Remotive Propositions, [84].

Repugnant Terms, [63]; [471].

Robertson, G. C., [357].

Rogers, R. A. P., [294].