BISMUTHUM.—BISMUTH.

339

BIDENS CORNUA, Linn.

Bident penché, Fb.

SynonimeHerbip.

A plant of Europe. (Syngenesia Poly-gamiaSEquaUsjliitss. ; Synanthereœ, Cass. ;Fig. (td. Fl. Dan. t. 841.)

The herb and flowers are employed.

The herb (Herba et Flores Bidentis seu

Verbesinai) is composed of a stalk with op-posite, amplexicaul, lanceolated, and serratedleaves.

The flowers are yellow cupped, radiated,furnished with bracteae longer than thecalix.

It is slightly astringent.

BISMUTHUM. -BISMUTH.

Synonimes : — JVismuthum, Marcasita. —Bismuth, Etraingris, Etain de glace, Fr. ;Wismuth, Markasit, Germ. ; Vismuth,Dan. ; Bismuto, Ital. ; Bismut, Pol.

t ond.; Dubl. ; Amer.; Austr.; Ba-tav. ; Bavar. ; Belg. ; Austr. ; Dan. ;

HlOD ■ fi \ T T . T?T^W . PpBO ■ fix? M I? \T -

D. ; Dubl. ; Amer.; Austr.; Ba-v. ; Bavar. ; Belg. ; Austr. ; Dan. ;[SP.; Gall.; Fenn. ;Ferr.; Genev.;ass. ; Lipp. ; Olden. ; Pol. ; Borus. ;i.x. ; Suec. ; Wirtem. ; Herbip. ;

■.■YE- « SlJTSI«» WW

LONDTAVHlSP. , .

Hass. ; Lipp. ,Sax. ; Suec. ; WCoxe ; Spielmann

This is a solid metal, of a yellowishwhite colour, of a lamellated texture, verybrittle and pulverizable. It is crystallizablein cubes disposed in reversed quadrangularpyramids, the faces of which representsteps. It is fusible at about 256 degrees ;it is not volatile ; it is slightly alterable bythe air, which tarnishes it. It burns with afeeble bluish light.

Its specific gravity is 9.822.

SUB-PROTO-CARBONATE OP BISMUTH.

Subcarbonas Bisrnuthicum. (Suec; VanMons)

R. Nitric Acid, one part.

Pure Water, four parts.

Throw bismuth into the mixture till itceases to be dissolved ; then add to the so-lution

Pure Water, ten parts.

Nitric Acid, a sufficient quantity

to render it limpid ; then heat it, and pourinto it a hot solution of subcarbonate ofpotass. Wash with hot water, and dry theprecipitate.

It is recommended in place of the fol-lowing.

sub-proto-nitrate of bismuth.

Sulnitras Bismuthi seu Bisrnuthicum, Bis-muthum nitricum seu subnitricum, Nitrassubbismuthicum, Magisterium Bismuthiseu Marcasita, Nitras Bismuthi, CalxVismuthi Bismuthum oxydulatum album.(Lond. ; Dubl. ; Amer. ; Ant. ; Austr. ;

Batav. ; Bavar. ; Belg. ; Bruns. ;Gall.; Fenn.; Ferr. ; Ham.; Lipp.;Olden.; Pol.; Borus.; Sax. ; Suec;Wirtem.; Brugnatelli; Coxe; Spiel-mann ; Swediaur ; Van Mons)

Bismuthi Subnitras.

R.

one ounce.

Bismuth,

Nitric Acid,

one fluid ounce and a half.

Distilled Water, three pints.Mix six fluid drams of the waterwith the acid, and dissolve the bis-muth in the mixture. Add the re-mainder of the water to the filteredsolution, and set it aside. Then pouroff the liquid, wash the precipi-tated subnitrate with distilled water,and dry it with a moderate heat inbibulous paper. (Lond.)

R. Bismuth, seven parts.

Dilute Nitric Acid, twenty parts.Distilled Water,

one hundred parts.Add the bismuth to the acid gra-dually, and dissolve it by heat ; thenmix the solution with the water.Wash the precipitate which formswith distilled water, and dry it with amoderate heat in bibulous paper.(Dubl.)

R. Bismuth, one part.

Nitric Acid (32 degrees) , three parts.Dissolve the metal in the acid, and mixthe solution with

Distilled Water, four parts.

Pour the liquor into a large glass vessel ;

wash the precipitate which forms, and dry

it in a warm place, sheltered from the rays

of the sun.