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
Today is Friday Muscular Christianity. Being one of Hemingway's lesser known works, "Today is Friday" has not been subject to much criticism, scholarly or otherwise. It has been treated as a "puzzling" work by Hemingway, lending mostly to the question of genre. Joseph M. Flora notes that this confusion spurs from the work being included in two of Hemingway's short story collections: Men Without Women and The Fifth Column and the First Forty-Nine Stories, thus treating it as a short story despite clearly being written in the form of a play. The most scolding criticism of the play came from Carlos Baker in