I need to do some further research on chapter titles in ancient texts, and whether they are authorial. A correspondent has drawn my attention to Bianca-Jeanette Schroder’s Titel und Text: Zur Entwicklung lateinischer Gedichtüberschriften. Mit Untersuchungen zu lateinischen Buchtiteln, Inhaltsverzeichnissen und anderen Gliederungsmitteln (De Gruyter, 1999, 349 pages). It retails for the eye-watering sum of 160 euros; around $240, which is ridiculous. An abstract is here, and in English here at the Google Books preview:
How old are the manuscript titles of Latin poems from Antiquity and Late Antiquity? Why were they written, and who created them? With these questions, the author enters virgin philological territory. Her interest is directed at the organisation of ancient texts.She shows that, contrary to conventional wisdom, the headings which subdivide poetry collections and provide preliminary information for the reader were not invented by medieval scribes or early modern editors; their development can in fact be traced back to Classical and Late Antiquity. The headings in collections of Latin poetry handed down through medieval mss. (incl. Horace, Ovid, Martial, Commodian, Ausonius, Luxurius) are partly authentic, and were partly added in late Classical Antiquity. In their function and linguistic form, they can be compared with book titles and other structural textual devices such as tables of contents and chapter headings. The present study also deals with the development of these devices, which are important for the history of books and of reading habits.
I have ordered a copy of this via interlibrary loan, not very hopefully. It will probably take weeks for the sleepy civil servants to bestir themselves. But at the price given, who can afford to buy a copy?