Fold-up geometrical illustrations in the first English edition of Euclid’s ‘Elements of Geometry,’ published London, 1570. John Dee wrote a mathematical preface to the book. (© Royal College of ...
A ring of human skulls originally circled 16th-century magician John Dee in a painting by the English artist Henry Gillard Glindoni. Henry Gillard Glindoni, “John Dee performing an experiment before ...