This image shows the famous Italian scholar and writer Francesco Petrarca (Petrarch) at work, pen in hand. Damaged as it may be, the full-page miniature provides a unique sneak peek into the study of a scholar around 1400. There are books with colourful bindings all around: in cupboards, on his desk, on the floor, and, most strikingly, on a book wheel. The latter is the centre piece of the drawing: the author’s eyes are fixed on the wheel, which is placed in the centre of the image. It is one of the oldest images of such a device that I have seen. A little book lays open on the wheel and parts of its contents are copied down by Petrarch into his own text - plagiarizing others was the thing to in his day. How fascinating: Petrarch’s sources spinning in front of his and our eyes, thanks to this depiction of his study.
Pic: Darmstadt, Universität- und Landesbibliothek, MS 101 (Petrarch, De viris illustribus, c. 1400). Here is another, younger book wheel I tumbled a while ago.