 It even used the preface to the 5th edition, dated December 1, 1817, as its own.Only the short page, "Advertisement To The Sixth Edition", which was bound in volume 1 after the forward and dated January, 1822, set it apart.In that advertisement, it is claimed that some geographical articles would be updated, and that the articles in the supplement to the 3rd edition would be inserted into the encyclopedia in their proper alphabetical places.