This section of the book is from the "Household Companion: The Family Doctor" book
Powdered charcoal is a good " sweetener " of a stomach oppressed with flatulence from indigestion. Dose, half a teaspoonful to a teaspoonful. It is often given with an equal quantity of magnesia.
Very finely powdered charcoal is also a useful ingredient in tooth-powders; on account of its cleansing action.