192 INORGANIC AGENTS 



SECTION YI. 

 Hydrargyrum. 



Mercury. Quicksilver. 



Synonym. — Mercurius vivas, argentum vivum, E.; mer- 

 cure, vif- argent, Fr.; quecksilber, G. 



Derivation. — Cinnabar, the native sulphate, is roasted or 

 distilled with lime, and condensed. 



Properties. — A shining, silver-white metal, without odor 

 or taste ; liquid at ordinary temperatures, and divisible into 

 spherical globules ; insoluble in the ordinary solvents ; boils 

 at 675^^ F., and is completely volatilized; spec, gr., 13.5584 

 When cooled to 38.88^ F., it forms a ductile, malleable mass. 



PREPARATIONS CONTAININO METALLIC MERCURY. 



I. — Hydrargyrum cum Greta. Mercury with Chalk. (U. fe. & B. P.) 



Mercury, 38 gm. ; honey, 10 gm. ; prepared chalk, 57 gm. ; water, 

 sufficient quantity to make 100 gm. (U. S. P.) 



Mercuric oxide becomes developed by keeping, making the powder 

 more active. 



Properties. — A light gray, rather damp powder, free from gritti- 

 ness, without odor, and having a slightly sweetish taste. Contains 

 mercury in fine division by shaking the ingredients together. 



Dose.— Foals and calves, gr.x.-xv. (.6-1.); D., gr.i. x. (.06-. 6). 



II. — Massa Hydrargyri. Mass of Mercury. (U. S. P.) 



Sf^now2/7w.— Pilula hydrargyri, B. P.: blue mass, blue pill, pilulse 

 coeruleae, E.; pilule de mercure, Fr.; mercurial pillen, G. 



Mercury, 33 gm.; glycyrrhiza, 5 gm.; althaea, 25 gm.; glycerin, 3 

 gm. ; honey of roses, 34 gm. Contains 33 per cent, of mercury in a state 

 of fine division. (U. S. P.) 



Dose.— D., gr.i.-x. (.06-.6). 



Ill.—Unguentum Hydrargyri. Mercurial Ointment. (U. S. & B. P.) 

 (Blue Ointment.) 



Synonym. — Pommade mercurielle, pommade Nai)olitaine, Fr. ; 

 graue quecksilbersalbe, G. 



Mercury, 500 gm.; lard, 250 gm.; suet, 230 gm. ; oleate of mercury, 

 20 gm. Contains 50 per cent, of mercury. (U. S. P.) 



