"A commentator on Aristotle writing in the 4th centur y A.D. calls certain instruments used for fusion and calcination "chuika organa" that is instruments for melting and pouring. Hence probably came the adjective chyic or chymic and at a somewhat later time the word chemia as the name of that art which deals with calcinations fusions meltings and the like. The writer of a treatise on astrology in the 5th centur y speaking of the influences of the stars on the dispositions of man says: "If a man is born under Mercur y he will give himself to astronomy ; if Mars he will follow the profession of arms; if Saturn he will devote himself to the science of alchemy (Scientia alchemiae)." The word alchemia which appears in this treatise was formed by prefixing the Arabic al (meaning the) to chemia a word as we have seen of Greek origin."