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
What Wondrous Love Is This joyful be, and through eternity I'll sing on, I'll sing on, and through eternity I'll sing on. </poem> What Wondrous Love Is This "What Wondrous Love Is This" (often just referred to as "Wondrous Love") is a Christian folk hymn, sometimes described as a "white spiritual", from the American South. Its text was first published in 1811, during the Second Great Awakening, and its melody derived from a popular English ballad. Today it is a widely known hymn included in hymnals of many Christian denominations. The hymn's lyrics were first published in Lynchburg, Virginia in the 1811 camp meeting songbook