82. Barley Water.—Put half a gallon of water into a very clean saucepan, with two ounces of clean (but unwashed) pearl barley, when boiling, carefully skim it with a tablespoon, and add half the rind of a small lemon, let it boil until the barley is quite tender; sweeten with half an ounce of white sugar, strain it through a fine hair sieve, and use when required. The juice of half a lemon in some cases may also be introduced.