Maps are artifacts of the era in which they were created: they reflect not only what people knew about the world, but how they saw it. That’s the thrust of Amelia Soth’s article for JSTOR Daily about The Book of Curiosities of the Sciences, and Marvels for the Eyes, a Fatimid-era cosmography compiled in Egypt in the 11th century; the Bodleian Library’s example is a late 12th/early 13th-century copy.
There is a philosophy underlying the geography. It pins abstract concepts to points in space, placing civilization and order at the center and wilderness and chaos at the edges. The medieval Arab world inherited the Greek conception of geography—in particular, that of Ptolemy, who separated the world into seven climates. The concentric arcs marked on the map represent these climates. The world is mapped as a circle with a center and a periphery; the regions grow hotter to the south and colder to the north, buffeted by different kinds of winds on the eastern and western sides, while the land at the heart of the map enjoys a harmonious balance of elemental forces. The people living at the center benefit from the temperate weather and grow up beautiful and healthy.