I don’t know why I find this so striking: It’s a diagram that accompanies the article on deer hunting in Denis Diderot’s Encyclopédie. Rather than presenting a single image with a caption, it combines a vignette of a deer hunt with an illustration of the antlers and piles of dung that are dropped by stags of different ages, together with a musical score showing the notes sounded by the hunting party at different stages of the pursuit. “Taken as a whole the hunting plates offer few clues for reading their complex hybrid of imagery and notations as an ensemble,” write...