Sulfuric acid the Hellenistic alchemical works of Zosimos of Panopolis, in the treatise "Phisica et Mystica", and the Leyden papyrus X. Medieval Islamic era alchemists, Jābir ibn Hayyān (c. 721 – c. 815 AD, also known as Geber), Razi (865 – 925 AD), and Jamal Din al-Watwat (d. 1318, wrote the book "Mabāhij al-fikar wa-manāhij al-'ibar"), included vitriol in their mineral classification lists. Ibn Sina focused on its medical uses and different varieties of vitriol. Sulfuric acid was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" (iron(II) sulfate) in an iron retort. There are
Country Today into Dial Global's portfolio of formats, and "Dial Global Local" ceased to exist as a brand name. However, most of the former Dial Global Local formats are still offered to affiliate stations in the same manner in which they were previously offered. Country Today is no longer offered under that name, but continues as a Local version of Dial Global's Mainstream Country format. Country Today Mainstream Country (Local Version) (formerly known as Country Today) is a 24-hour music format produced by Dial Global, and formerly by Waitt Radio Networks and then by the now-defunct Dial Global Local. Its playlist is