AMMONIA

is a gas consisting of Nitrogen and Hydrogen, marked by a strong pungent smell and possessing alkaline properties. Its common form, Spirits of Ammonia or Hartshorn, is water saturated with the gas.

The many household uses of Ammonia are familiar to all. It is also about the best thing to apply to the bites or stings of insects and is said to be an excellent fire extinguisher. It is sometimes used in baking powders, but being extremely volatile it soon loses its strength.