Part III: The Circumference and the Hieroglyphic Monad in In Operibus Sigillo Dei Aemeth by David Richard Jones.

“Those familiar with Dee’s Hieroglyphic Monad will immediately realize that it is principally a Hermetic symbol, elaborated from the symbol for Mercury into an inclusive meta-symbol for the whole of Hermetic knowledge, alchemically and inclusive of all three levels of traditional occult science: elemental planetary, and astrological.” [via]