R. Sale > 21-03-2025, 10:11 PM
Chronology indicates the Boulogne
Aratea has completely absorbed the cosmic structure from the earlier Leiden edition. And much additional information has been added in the supplemental circles in each of the four corners. The lower right has a geographical T-O center.
Provenance has the Boulogne edition and the Bern version both produced at St. Bertin in the 10th to 11th C. era. The similarities between the two are particularly clear in the comparison of the two representations of the Sun and Moon. They are very similar pairs of illustrations with more significant differences in coloration. These are the two examples of a solar head with a headband, outside the VMs. It's the same pair of images.
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The Bern edition does not have the same cosmic diagram as the Leiden apparently passed to the Boulogne version. Instead, it has a very different representation, with a few superficial similarities. There is a big red ring with the representational figures of the Zodiac, but Aries starts on the opposite side and goes the opposite way. It is not a planetary representation of the cosmos centered on Terra. Instead, it is a visualization of the constellations centered on the polar images of Draco and the bears.
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Another comparison with a pair of 9th Cent. St. Gall mss. show Apollo, not as a solar head, he's got sprouts, instead and there is no headband. History is clear: Apollo wears a headband at St. Bertin, not at St. Gall.
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With the Sun and Moon personified in the center of the Zodiac.
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The cosmic structure of the Leiden and Boulogne diagrams was apparently lost in favor of the seven nesting spheres model of the cosmos. Meanwhile,
Aratea sources mention Eudoxus of Cnidus, but did he put Mercury and Venus in orbit around the sun in a geocentric cosmos?