Studies and Exercises in Formal Logic

INCLUDING A GENERALISATION OF LOGICAL PROCESSES IN THEIR APPLICATION TO COMPLEX INFERENCES
BY JOHN NEVILLE KEYNES, M.A., Sc.D. UNIVERSITY LECTURER IN MORAL SCIENCE AND FORMERLY FELLOW OF PEMBROKE COLLEGE IN THE UNIVERSITY OF CAMBRIDGE
FOURTH EDITION RE-WRITTEN AND ENLARGED
𝕷𝖔𝖓𝖉𝖔𝖓
First Edition ( Crown 8 vo. ) printed 1884.
Second Edition ( Crown 8 vo. ) 1887.
Third Edition ( Demy 8 vo. ) 1894.
Fourth Edition ( Demy 8 vo. ) 1906.
IN this edition many of the sections have been re-written and a good deal of new matter has been introduced. The following are some of the more important modifications.
In Part I a new definition of “connotative name” is proposed, in the hope that some misunderstanding may thereby be avoided; and the treatment of negative names has been revised.
In Part II the problem of the import of judgments and propositions in its various aspects is dealt with in much more detail than before, and greater importance is attached to distinctions of modality. Partly in consequence of this, the treatment of conditional and hypothetical propositions has been modified. I have partially re-written the chapter on the existential import of propositions in order to meet some recent criticisms and to explain my position more clearly. Many other minor changes in Part II have been made.
Amongst the changes in Part III are a more systematic treatment of the process of the indirect reduction of syllogisms, and the introduction of a chapter on the characteristics of inference.