After Islam, Persian words converted to Arabic, with the addition of "AL" to the names. The alchemical theories associated with Hermes Trismegistus, is the syncretism of the Greek god Hermes and the Egyptian Thoth.[8] Moreover, it is known that "[t]he four chemical gods of the Egyptians, the female-male original principle of Osiris (male Sun) and the corresponding Isis (Wife-sister, female Moon), as well as Mercury and Vulcan, became eight gods and finally twelve gods, who were later taken over by the Greeks."[9] This origin theory, in chemistry, was generally known as the "pyramid of composition" and was used in the writing of Michael Maier, who in turn influenced Isaac Newton in his alchemical writings in the 1680s. Hence, the ancient "Egypt" word kēme (3000 B. C.), which stands for earth, is a possible root word of chemistry; this later became "khēmia", or transmutation, by 300 AD, and then “al-khemia” in the Arabic world, then alchemia in the Dark Ages, then “chymistry” in 1661 with Boyle’s publication, and now “chemistry”.