Excerpt from Illustrations of Logic

In the following collection, illustrating fundamental processes of Deductive Logic, with examples taken from general literature, the compiler has had in view, primarily, the needs of teachers of the subject. Many of the manuals in common use present those processes (particularly the syllogism) in the form of what Dr. Venn aptly terms "prepared material"; and the instructor consequently finds difficulty in convincing his hearers that the logic of the class-room bears any relation to thought as met with in ordinary discussion and in books. Thus, without attempting a comprehensive treatment of "rhetorical logic" such as Jevons had in view, but unfortunately did not live to carry out, it yet seems possible to offer a little volume that may serve some purpose as an adjunct to any well-known handbook - not in any sense as a substitute. Should a timorous objection be urged that several of the specimens selected involve questions quae in sermone et opinione positae sunt, as Bacon puts it, the reply is that the student also has been kept in mind.

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