Κυριακή, 23 Απριλίου 2017

Astronomical and medical miscellany, including a volvelle and tables of the mansions of the moon England; c. 1482


Astronomical moveable diagrams, on the left with a pointing standing man in the centre. 


A volvelle, a device with a moveable disc rotating with a fixed matrix, with a pointing moveable index of the sun (here painted yellow to represent the sun) which could be set at the sign and degree of the zodiac for a particular day in order to predict the best time to provide medical treatment. The names of the months are on the inside ring, with degrees and corresponding zodiac names below, on the left. On the right is an astronomical moveable diagram.
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