Contractions. - Mag-m. Mg-m.

Present name. - Magnesic Chloride. MgCl2.

Muriate of Magnesia.

This is prepared as follows: Take two equal parts of Hydrochloric Acid, and neutralize one part with Magnesia, the other with Ammonia; then mix the products, evaporate and fuse in a loosely-covered porcelain crucible, when the Chloride of Ammonium sublimes into the air and pure Chloride of Magnesium remains.

Characters and Tests. - White, crystalline masses, very deliquescent; entirely soluble in water and 20 O.P. spirit. It gives white precipitates with Nitrate of Silver and Phosphate of Soda.

Preparation. - Solution in 20 O.P. spirit for V, and rectified spirit for all above.

Reference to Horn. Proving. - Chr. Kr., iv.

Proper forms for dispensing. - lx and upwards, Tincture, Pilules, or Globules.