This volume concludes the series with an apparatus. The list of Abbreviated Titles comprises all Abbreviations used throughout the four Parts while the Bibliography consolidates the books and articles cited in the four sets of References. The intention of the various Indices is to let the reader find his way about the text in one way or another whereas the main focus of the Addenda is on publications that were either earlier missed or, as in most cases, appeared too late to be included at the appropriate stage of the text. Lastly, the list of errata in the Corrigenda consists mostly of typographical errors that escaped notice in the original manuscript.