Half-a-teaspoonful of Nelson's Citric Acid dissolved in a quart of
water, with a sliced lemon and sweetened with sugar, forms a good
lemonade, and is a cooling and refreshing drink. A small pinch of the
Citric Acid dissolved in a tumbler of water with a little sugar and a
pinch of bicarbonate of potash, makes an effervescing draught. These
acidulated drinks are exceedingly useful for allaying thirst; and as
refrigerants in feverish and inflammatory complaints they are
invaluable.