In Furnace for the Sublimation of Spirits Silvio Vujičić shows the results of the new experiments from his artist’s studio. This time the crystal he uses in his “lab of wonders” as a material for sculpture is not harmless. It is a psychoactive drug, a crystalline xanthine alkaloid known as caffeine, in a pure form as white powder/crystals and for the sculpture he needs considerable amounts of it, a poisonous dose. In the installation, heated at 178 ºC, the stimulant under the glass bell is in slow but constant state of change and transformation, producing the gentle white sculpture in the upper vacuum glass chamber by sublimation and “running” into the lower glass vessel where it again crystallizes/materializes into another shape. The form of the sculpture is a mutation from contemporary laboratory glassware, Syrian illustrations of chemical apparatus from medieval manuscripts and woodcuts of alchemical vessels taken from Geber's Works (London, 1678).