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John of Holywood, Tractato de la spera


John of Holywood (13th century)
Tractato de la spera, 14th century
Florence, Biblioteca Riccardiana, Ms. Ricc. 2425, ff. 35v-36r

A translation into Italian of John of Holywood's treatise on cosmology. This clear and simple compilation summarises Ptolemy's Almagest. On folio 35v, the sphere of the world with the Eighth Heaven.