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
Her Name Is Calla by two UK tours and two European tours and single "Ragman Roll". While the response to the Navigator was viewed positively by critics, it lacked the wider appeal witnessed with its predecessor. In 2015, celebrating a decade of the playing together, the band released a short documentary entitled ‘’A Wave of Endorphins’’; a title inspired by the popular track "Pour More Oil" which appeared on The Quiet Lamb. Lead vocalist Tom Morris has released music as a solo artist under the name T E Morris, as does multi-instrumentalist Adam Weikert as 'Weikie'. Her Name Is Calla Her Name Is Calla