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His writings were first translated into English by the noted hydraulic engineer Clemens Herschel in 1899. In the eight century . an Arabian alchemist,Geber,wrote a rather specialized treatise on distillation that included various stills for water and other liquids. The English philosopher Sir Francis Bacon wrote of his experiments on the purification of water by filtration, boiling, distillation and clarification by coagulation. This was published in 1627, one year after his death. Bacon also noted that clarifying water trends to improve health and increase the pleasure of the eye. The first known illutrated descri ption of sand filters was published in 1685 by Luc Antonio Porzio, an Italian physician. He wrote a book on conserving the health of soldier in camps, based on his experience in the AustroTurkish War. This was probably the earliest published work on mass described and illustrated the use of sand filters and sedimentation. Porzio also stated that his filtration was the same as by those who built the wells in the Palace of the Doges in Venice and in the palace of Cardinal Sachett,at Rome. The oldest known archeological examples of water filtration are in Venice and the colonies she occupied. The ornate heads on the cisterns bear