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The author prefaces the second edition of this valuable book by a general apology for all revisions and with some misgivings that he may disrupt the continuous and orderly presentation of his material by the additions and deletions. He need have no worry in this respect, for the very few criticisms which could be leveled at the previous edition seem to have been completely exenterated with skill, and the several changes in arrangement of the material have been most beneficial. Even if the second edition were no better and no worse than the first, the appearance of this volume on the shelf of many libraries throughout the country will be warmly welcomed, for it has long been out of print, and in many academic circles the one remaining copy has had to be kept under lock and key.
There are, in fact, not a great many changes in this book,