III. Clavis. Description. It is presented as a sequence of alchemical operations encoded allegorically in words, to which images have been added Available to download for free in PDF, epub, and Kindle ebook formats. Skip straight to downloads. Twelve Keys Basil Valentine The Preface of Basilius Valentinus, the Benedictine The Tract of Basilius Valentinus, the Benedictine, FIRST KEY SECOND KEYfor your The Twelve Keys of Basil Valentine is a widely reproduced alchemical book attributed to Valenti