Most Mosul paintings were manuscript illustrations—mainly scientific works, animal books, and lyric poetry. A frontispiece painting, now held in the Bibliothèque nationale, Paris, dating from a late 12th century copy of Galen's medical treatise, the Kitab al-diriyak ("Book of Antidotes"), is a good example of the earlier work of the Mosul school. It depicts four figures surrounding a central, seated figure who holds a crescent-shaped halo. The painting is in a variety of whole hues; reds, blues, greens, and gold. The Küfic lettering is blue. The total effect is best described as majestic.