books.google.fr - Claudius Ptolemy (c.100 - c.178 AD), of Alexandria, was one of the greatest philosopher/scientists of the ancient world. Among his books are the Almagest, Geography, Optics, Planispherium and Tetrabiblos. The earliest surviving version of Tetrabiblos is the paraphrase attributed to Proclus the Philosopher...http://books.google.fr/books/about/Tetrabiblos.html?hl=fr&id=RokFxdZx1kUC&q=Taurus&utm_source=gb-gplus-shareTetrabiblos
