An Alchemists Treasure
http://www.angelfire.com/ga2/splitskull2/index.html popularOffers an insightful summary of alchemical philosophy plus original alchemy texts such as "The Treasure of Treasures" by Paracelsus, "Summi Philosophi et Chemici" by Joachim Tanckivs, and "The Discovery of Secrets" by Abu Musa Djaber.
Submitted in section: Alchemy: An Alchemists Treasure