... is embodied in the present volume which is to be considered but as a supplementary volume of "Addenda" and "Corrigenda" to the Book itself. I have gathered matter for a younger editor when a fourth edition of the Book of Ser Marco Polo is undertaken, age preventing the present editor to entertain the hope to be able to ... — The Travels of Marco Polo, Volume 2 • Marco Polo and Rustichello of Pisa