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thodical and reputable in their performance; and a knowledge of the principles on which, in this volume, the art of Logic is founded, can scarcely fail to facilitate the progress of youth in becoming good reasoners.

Of this they may be assured, if they have sufficient candour to admit there is such a thing as good reasoning, that there is no accomplishment or qualification any man can acquire more important, than the art of reasoning well. Whether then, youth shall become, in life, men of speculation or men of business, in every step they take, their rational faculties must be constantly exercised; and the subject of which we now speak is calculated entirely to render 'them expert and successful in that exercise.

The FIFTH BOOK which offers a sketch of "The Philoso phy of Human Knowledge," seemed a necessary Appendix to the volume; but it was not my object, in the compass of a few pages, to enter upon a subject which I intend to publish in a separate work, as a sequel to my Grammars of Rhetoric and Logic.

And, for the purpose of initiating youth in the doctrines of the Philosophy of Mind, I have constructed, on this Grammar of Logic, a Book of "Questions and Exercises," with a "Key" to the same; as, in my humble judgment, no discipline is more successful in accomplishing its end, than that which reduces literature, philosophy, and science, to interlocutory discourse, conducted in the style and manner of a spirited dialogue. The ease with which the entire volume may be converted into “Dialogues on Logic and Intellectual Philosophy," by means of its companion, the "Book of Questions," can only be equalled by the advantages which youth ever derive from catechetical instruction, possessing the sprightliness of living language, and familiarising the speakers to unpremeditated extempore discussion. If any thing can verify the observations contained in this Introduction, it must be the practice of the catechetical method

which I now recommend-a practice which distinguished the instructions of Socrates, which Plato has preserved in his Dialogues, and to which Cicero has reduced almost all his philosophical writings.

ALEXANDER JAMIESON.

London, March, 1819.

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Analysis of this Faculty in general

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BOOK IV.

GRAMMAR OF LOGIC.

CHAPTER

I. OF IDEAS

Of simple and complex Ideas

Of distinct and confused Ideas

Of adequate and inadequate Ideas

Of particular or abstracted Ideas

Rules for the Acquisition and Examination of Ideas and
Words -

Of the Ambiguity of Words

Of Enumeration, Description, and Definition

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II. OF PROPOSITIONS

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Sources of Human Knowledge

Of mathematical, moral, political, and prudential Reason

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Different species of Reasoning
Examples of Reasoning a Priori
Example of Reasoning a Posteriori
Analytic and Synthetic Reasoning
Example of Analytic Reasoning -

III. OF SOPHISTRY

IV. OF REASONING AND SYLLOGISM

Of the Constitution of Syllogisms

Of plain simple Syllogisms, and their Rules

Of the Modes and Figures of simple Syllogisms
Of Complex Syllogisms

Of Conjunctive Syllogisms

Of Compound, Imperfect, or Irregular Syllogisms
Of the Merit of Syllogistic Reasoning

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ib.

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BOOK V.

THE PHILOSOPHY OF HUMAN KNOWLEDGE.

I. HUMAN KNOWLEDGE ADDRESSED TO THE MEMORY
II. HUMAN KNOWLEDGE ADDRESSED TO THE UNDERSTAND-

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