There is a further suitableness in the title, owing to the fact that most of the contents have no claim to originality. As a Roman Mosaic is made up of small coloured cubes joined together in such a manner as to form a picture, so my book may be said to be made up of old facts gathered from many sources and harmonised into a significant unity. So many thousands of volumes have been written about Rome that it is impossible to say anything new regarding it. Every feature of its topography and every incident of its history have been described. Every sentiment appropriate to the subject has been expressed