Baro Urbigerus
Encyclopedia
Baro or Baru Urbigerus was a seventeenth century writer on alchemy
Alchemy
Alchemy is an influential philosophical tradition whose early practitioners’ claims to profound powers were known from antiquity. The defining objectives of alchemy are varied; these include the creation of the fabled philosopher's stone possessing powers including the capability of turning base...

. He is known for his Aphorismi Urbigerani (1690) This collection of 100 aphorism
Aphorism
An aphorism is an original thought, spoken or written in a laconic and memorable form.The term was first used in the Aphorisms of Hippocrates...

s claims to set out completely the theory of the alchemical work, the preparation of the Philosopher's Stone
Philosopher's stone
The philosopher's stone is a legendary alchemical substance said to be capable of turning base metals into gold or silver. It was also sometimes believed to be an elixir of life, useful for rejuvenation and possibly for achieving immortality. For many centuries, it was the most sought-after goal...

. A shorter collection of 31 aphorisms, contained in it, is known as the Circulatum Minus Urbigeranum.
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