Studies and Exercises in Formal Logic

by John Neville Keynes

Destructive Dilemma, [363], 4.

Destructive Hypothetical Syllogism, [352].

Determinant, [468]; [479].

Determination, [468].

Development of Terms, [474].

Diagrams, their use in Logic, [156], 7; Euler’s, [157]–62; Lambert’s, [163]–6; Venn’s, [166]–8; development of Euler’s diagrams, [170]–4; of Lambert’s diagrams, [174]–6; application of diagrams to syllogistic reasonings, [341]–6.

Dichotomy, see [Division by Dichotomy].

Dicta for the second, third, and fourth figures, [337], 8.

Dictum de diverso, [337] n.

Dictum de excepto, [338] n.