Logic

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. I owe a great deal to Mr. Alfred Sidgwick, Mr. Thomas Whittaker, and Professor C. M. Thompson, who have been at pains to advise me upon portions of the ms. And proofs. Most of the chapters, however, no one but myself has seen; so that whatever errors the critic may find must occur in those unsponsored chapters; and it is, therefore, needless to say which they are.