This acid exists in the juice of many fruits, such as the orange,
currant, and quince, but especially in that of the lemon. It is chiefly
made from the concentrated juice of lemons, imported from Sicily and
Southern Italy, and which, after undergoing certain methods of
preparation, yields the crystals termed Citric Acid. These crystals may
be used for all the purposes for which lemon-juice is employed. In the
manufacture of the Citric Acid now offered to the public by Messrs. G.
Nelson, Dale, and Co., only the pure juice of the lemon is used.