2. Hildegard’s First Scheme of the Universe (slightly simplified
from the Wiesbaden Codex B, fo. 14 _r_) 9
3. Hildegard’s Second Scheme of the Universe (reconstructed from
her measurements) 29
4. Dante’s Scheme of the Universe (slightly modified from
Michelangelo Caetani, duca di Sermoneta, _La materia della
Divina Commedia di Dante Allighieri dichiarata in VI tavole_) 31
5. Diagram of the Zones (from Herrade de Landsberg, _Hortus
deliciarum_) 40