You should know at the outset what this book does not attempt to do. It does not, save to the extent that its own special purpose requires, concern itself with the many and intricate problems of grammar, rhetoric, spelling, punctuation, and the like; or clarify the thousands of individual difficulties regarding correct usage. All these matters are important. Concise treatment of them may be found in THE CENTURY HANDBOOK OF WRITING and THE CENTURY DESK BOOK OF GOOD ENGLISH, both of which manuals are issued by the present publishers. But this volume confines itself to the one task of placing at your disposal the means of adding to your stock of words, of increasing your vocabulary.