Circles

Engraving from <n>Philosophia Moysaica</n> (1638) by English mystic <n>Robert Fludd</n>.

The <n>Anima Mundi</n> (Soul of the World), a frontispiece from <n>Ebenezer Sibly</n>'s book on astrology, c. 1790.

<n>Integrum morborum mysterium</n> (1631), an alchemical diagram by <n>Robert Fludd</n>, engraved by <n>Johann Theodor de Bry</n>.

A volvelle from the <n>Astronomicum Caesareum</n>, created in 1540.

13 Things I Found on the Internet Today (Vol. DLV)

A plate from <n>Mary Gartside</n>'s 1808 book, <n>An Essay on a New Theory of Colours</n>.