63. Mustard is one of the most common condiments. If used in small quantity it promotes the appetite and increases the digestive power, but taken too freely it irritates the stomach and is very injurious. As a medicine mustard is of very great use, spread on calico and applied to the skin it relieves internal inflammation, by drawing the blood to the surface, in this manner it often relieves the most violent pain, and may be safely used in the absence of medical aid.