27. Book Tablets. A MAN CUTTING turf in Springmount bog in Ballyhutherland, Co Antrim, found this set of six yew tablets, held together by leather straps. The inner tablets are hollowed out on both sides, forming the pages of a small wooden book. These inner surfaces are filled with wax, on which someone wrote, or rather literally inscribed with a pointed stylus, a biblical text. This is the earliest extant Irish manuscript.