A brief history of the origins of book chapters. One quote:
Fielding’s older brother, the novelist Henry Fielding, had already, in “Joseph Andrews” (1742), explained “those little Spaces between our Chapters” as “an Inn or Resting-Place, where he may stop and take a Glass, or any other Refreshment, as it pleases him.” Chapter titles, Fielding proceeded to explain, were like the inscriptions over the doors of those inns, advertising the accommodations within.