Hence, to sum up: The most rational modes of keeping physical decay or deterioration at bay, and thus retarding the approach of old age, are avoiding all foods rich in the earth salts, using much fruit, especially juicy, uncooked apples, and by taking daily two or three tumblerfuls of distilled water with about ten or fifteen drops of diluted phosphoric acid in each glassful.

– William Kinner, North American Review 1893