SULPHATE OF IRON
Green vitriol, or copperas, as it is commonly known, is a splendid mineral tonic, and is commonly used in combination with gentian, equal parts of the two. Use when the system is badly run down. It is also excellent as a worm powder.
Dose: For horses and cattle, 1 teaspoonful three times a day; sheep and pigs, one-half teaspoonful.