In view of the sexual imagery in the source texts (which Burton emphasized even further, especially by adding extensive footnotes and appendices on Oriental sexual mores) and the strict Victorian laws on obscene material, both of these translations were printed as private editions for subscribers only, rather than published in the usual manner. Burton's original 10 volumes were followed by a further six (seven in the Baghdad Edition and perhaps others) entitled "The Supplemental Nights to the Thousand Nights and a Night", which were printed between 1886 and 1888. It has, however, been criticized for its "archaic language and extravagant idiom" and "obsessive focus on sexuality" (and has even been called an "eccentric " and a "highly personal reworking of the text").