The Salt of a Mineral Spring at Gettysburg, Pa., U.S.A. Trituration.

Clinical.-Bone, affections of. Hip disease. Potts'disease. Scrofula. Ulcers.

Characteristics.-Magnesium sulphate is the predominant ingredient of Gettys., but the water contains many salts of alkalis, and earths with a number of metals. Lithium is contained in it. Its action is very like that of Silica (which it contains). It is indicated in caries of vertebrae or hip; ulceration of joints, when the discharge excoriates. Scrofulous children.