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This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.
[s.n.] · 1666

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A very faint, hand-drawn circular diagram occupies the center-right of the page. It consists of a large outer circle with several internal lines, including a prominent horizontal chord and several intersecting arcs. It appears to be a schematic representation of a celestial sphere, a globe, or an astrological chart. There are traces of minute handwriting around the circumference and within the sections of the diagram, but they are too faded to decipher.