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Monochordum mundi by Robert Fludd

Monochordum mundi. Illustration from the Robert Fludd's Utriusque cosmi maioris scilicet et minoris metaphysica, physica atque_technica historia, 1617.
It summarizes Fludd's cosmology as a Pythagorean monochord comprising two octaves and divided into the basic harmonic intervals, the values of which had no experimental foundation.