Source Book 'has been followed in this companion volume, and the same care has been exercised in selecting, verifying, and reproducing. The references given are in every case as full as could be desired, while the information furnished as to authors quoted, publishers of books etc., will, we believe, be found ample for all practical purposes. A complete index makes it easy not only to turn readily to any subject, but to find at once any particular subdivision of any subject. As in the Source Book, the list of Authorities Cited is a very help ful feature.