SODA POWDERS.
To make these powders put 1 tea spoonful of carbonate of soda into a glass nearly half full of water, and ½ tea spoonful of tartaric acid in the other, and add enough sugar and lemon syrup or lemon juice to suit the taste; stir and dissolve the powders and sugar, then pour one into the other and drink while effervescing. This is a very pleasant and cooling drink.