INTRODUCTORY THERE are several reasons why this preface is not more apologetic than it is. Authors have for so many centuries been in such transports of glad apology, and have displayed so curious an ingenuity in expressing that diffident but hopeful emotion that, search as I will, I can happen on no set of phrases that looks original-even to myself. Yet I willingly concede the rightness of the apologetic mood in an author, and especialIy in this author, and I have large sympathy-with those critics who will be unable to see the necessity for this volume. They will be unable to see it for a...