Image: P.9 a volvella of the moon. A volvella is a moveable device for working out the position of the sun and moon in the zodiac

Description: This part of the manuscript contains an assortment of texts about astrology and medicine. This combination was common in manuscripts all over Europe by the fifteenth century. To people in the Middle Ages there was close link between the time of year, the moon's seasons and other astrological factors and health and medical treatment, as they would affect the body's humours.
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Credit: National Library of Wales
Author: Gutun Owain
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