The author's aim has been to produce such a condensation of the original work as may recall its contents to those who have read it, and may serve those who are now reading it in the place of a full body of marginal notes. Mr. Mill's conclusions on the true province and method of Logic have a high substantive value, independent even of the arguments and illustrations by which they are supported; and these conclusions may be adequately, and, it is believed, with much practical utility, embodied in an epitome. The processes of reasoning on which they depend, can, on the other hand, be represented in outline only. But it is hoped that the substance of every paragraph, necessary for the due comprehension of the several steps by which the results have been reached, will be here found at all events suggested.

The author may be allowed to add, that Mr. Mill, before publication, expressed a favourable opinion of the manner in which the work had been executed. Without such commendation the volume would hardly have been offered to the public.

London: Dec. 21, 1865.

CONTENTS.

PAGE
Introduction[1]
BOOK I.
NAMES AND PROPOSITIONS.
CHAP.
I. On the Necessity of commencing with an Analysis of Language in Logic[3]
II. Names[3]
III. The Things denoted by Names[7]
IV. Propositions[17]
V. The Import of Propositions[19]
VI. Propositions merely Verbal[24]
VII. The Nature of Classification, and the Five Predicables[26]
VIII. Definition[30]
BOOK II.
REASONING.
I. Inference, or Reasoning in General[35]
II. Ratiocination, or Syllogism[36]
III. The Functions and Logical Value of the Syllogism[39]
IV. Trains of Reasoning, and Deductive Sciences[43]
V. & VI. Demonstration and Necessary Truths[46]
BOOK III.
INDUCTION.
I. Preliminary Observations on Induction in general[53]
II. Inductions improperly so called[54]
III. The ground of Induction[57]
IV. Laws of Nature[58]
V. The Law of Universal Causation[60]
VI. The Composition of Causes[66]
VII. Observation and Experiment[67]
VIII. & Note to IX. The Four Methods of Experimental Enquiry[69]
X. Plurality of Causes, and intermixture of Effects[73]
XI. The Deductive Method[76]
XII. & XIII. The Explanation and Examples of the Explanation of Laws of Nature[77]
XIV. The Limits to the Explanation of Laws of Nature; and Hypotheses[79]
XV. Progressive Effects, and continued Action of Causes[81]
XVI. Empirical Laws[83]
XVII. Chance, and its Elimination[85]
XVIII. The Calculation of Chances[87]
XIX. The Extension of Derivative Laws to Adjacent Cases[89]
XX. Analogy[91]
XXI. The Evidence of the Law of Universal Causation[92]
XXII. Uniformities of Coexistence not dependent on Causation[94]
XXIII. Approximate Generalisations, and Probable Evidence[96]
XXIV. The remaining Laws of Nature[99]
XXV. The grounds of Disbelief[103]
BOOK IV.
OPERATIONS SUBSIDIARY TO INDUCTION.
I. Observation and Description[107]
II. Abstraction, or the Formation of Conceptions[108]
III. Naming as Subsidiary to Induction[111]
IV. The Requisites of a Philosophical Language, and the Principles of Definition[112]
V. The Natural History of the Variation in the Meaning of Terms[115]
VI. Terminology and Nomenclature[117]
VII. Classification, as Subsidiary to Induction[121]
VIII. Classification by Series[124]
BOOK V.
FALLACIES.
I. Fallacies in general[127]
II. Classification of Fallacies[128]
III. Fallacies of Simple Inspection; or, à priori Fallacies[130]
IV. Fallacies of Observation[134]
V. Fallacies of Generalisation[137]
VI. Fallacies of Ratiocination[141]
VII. Fallacies of Confusion[143]
BOOK VI.
ON THE LOGIC OF THE MORAL SCIENCES.
I. Introductory Remarks[148]
II. Liberty and Necessity[148]
III. There is, or may be, a Science of Human Nature[150]
IV. The Laws of Mind[151]
V. Ethology, or the Science of the Formation of Character[153]
VI. General Considerations on the Social Science[155]
VII. The Chemical, or Experimental, Method in the Social Science[156]
VIII. The Geometrical, or Abstract Method[157]
IX. The Physical, or Concrete Deductive Method[158]
X. The Inverse Deductive, or Historical Method[161]
XI. The Logic of Practice, or Art; including Morality and Policy[165]