‘On scrolls and fragments’ explores the physical difficulties in working with the Dead Sea Scrolls. Firstly: how does one define a scroll? There is not a single, complete scroll in the entire collection, and questions exist about how many scrolls there were originally. Counting the scrolls is also difficult—are two fragments of the same scroll distinct? The scroll fragments are grouped together according to language, content, and handwriting, with obvious joins between fragments providing definitive proof that they are related. Handwriting was taught through scribal traditions, and as such palaeography is difficult but not impossible. Radiocarbon dating using accelerometer mass spectrometry has accurately dated the scrolls.