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
What Is History? of change. If you are allergic to these processes, you abandon history and take cover in the social sciences. Today anthropology, sociology, etc, flourish. History is sick. But then our society too is sick". Carr deplored the rise of Structuralism. Carr wrote there was the structuralist approach, which Carr called a "horizontal" way of understanding history "which analyses a society in terms of the functional or structural inter-relation of its parts". Against it, there was what Carr called the "vertical" approach "which analyses it [society] in terms of where it has come from and where it is going". Through Carr