LAVR

21.'

precipitate falls. Wash this precipitate with distilled water anddry it.

La Motte's Golden Drops. See De la Motte.

Lamfic Acid, supposed at first by Mr. Daniell to be peculiar, but sinceascertained by him to be merely acetic acid combined with somecompound of carbon and hydrogen, though not alcohol nor ether.

Lapis, a Stone, a term given to several substances, both natural andartificial, used in medicine and the arts. As the term is now wear-ing out of use, it will be unnecessary to enumerate all the old and, obsolete lapides.

Lapis Bezoak. See Bezoar.

Lapis Calaminaris. See Calamina.

Lapis Calcareus. L. Limestone. Used to prepare quicklime forlime water.

Lapis Divinus, a preparation used for making a collyrium, and madeby fusing together equal parts of nitrate of potash, sulphate of alu-mina, and sulphate of iron, and then adding one forty-eighth ofthe mass of camphor.

Lapis Hibernicus, or Irish Slate, a sort of shale impregnated withalum, and kept ; n the shops for the common people, who put aspoonful of it in beer for sprains, bruises, &c.

Lapis Infernalis. See Potassa Fusa.

Lapis Lazuli. Lazulite, or Azure Stone. A mineral of a very fineblue colour. See Ultramarine.

Lapsana Communis. Nipplewort. A native plant, which was for-merly employed for sore nipples, but is now disused.

Lard. See Adeps Prjep. L.

Laserpitium Latifolium. P. Lasserwort. The root is a bitteraromatic, stomachic, and tonic. The seeds of the Laserpilium sder.P. have similar qualities, and are used in flatulent colic, &c.

Laudanum. O. The popular term for Tincture of Opium. SeeSydenham's Laud., &c.

Laurel. See Lauri.

Laurel Rose. Nereum oleander. P. The dried leaves in powder areviolently errhine. Internally the plant is poisonous. It is a nativeof the Levant.Laurel Water is water distilled from the leaves of the Primus lauro-cerasus, D., and as it contains a considerable portion of hydrocyanicor prussic acid, it partakes of its properties.Poisonous in a violent degree, producing sudden death without beingaccompanied with any of the usual symptoms of poisoning, except, ina few instances, an excruciating pain of the stomach.Antidotes. If an emetic be instantly taken it may perhaps evacuate the