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relative to the intersecting points of the ecliptic with the equator, it is thought that it must have been constructed at least three hundred years before the Christian era. It seems therefore to date from about the time of Eudoxus, being then the oldest extant globe.

      Fig. 7. Atlante Farnese, ca. 200 BC

      Fig. 8. Atlante Farnese Constellation Figures.

      Fig. 9. Armillary Sphere according to Ptolemy.

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