To Take Rust from Steel Implements or Knives
Rub them well with kerosene oil, leaving them covered with it a day or so; then rub them hard and well with finely powdered unslaked lime.
Source: The White House Cookbook, F.L. Gillette
Toilet Soap
One pound of washing soda, one pound of lard or clear tallow, half a pound of unslaked lime, one tablespoonful of salt, three quarts of water. Put the soda and lime in a large dish, and pour over the water, boiling hot; stir until dissolved; let it stand until clear, then pour off the clear liquid, add the grease and salt; boil four hours, then pour into pans to cool. If it should be inclined to curdle or separate, indicating the lime to be too strong, pour in a little more water, and boil again. Perfume as you please, and pour into molds or a shallow dish, and, when cold, cut into bars to dry.
Source: The White House Cookbook, F.L. Gillette