Iron(II) sulfate was used in the textile industry for centuries as a dye fixative. It is used historically to blacken leather and as a constituent of ink. The preparation of sulfuric acid ('oil of vitriol') by the distillation of green vitriol (Iron(II) sulfate) has been known for at least 700 years. Together with other iron compounds, ferrous sulfate is used to fortify foods and to treat and prevent iron deficiency anemia. Constipation is a frequent and uncomfortable side effect associated with the administration of oral iron supplements. Stool softeners often are prescribed to prevent constipation. Ferrous sulfate was used in the manufacture
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