sil'ver

A metal occurring in nature both uncombined and in combination, in the latter case usually as a sulphid. It is a good conductor of heat and electricity. It is not changed by the atmosphere, though it may be altered by hydrogen sulphid. It usually forms strong coherent solid ma es, but it may be obtained as a fine dark powder (molecular s.), and it is also found in the crystalline form. Atomic weight, 107.9. Specific gravity, 10.5. Symbol, Ag., from Lat., argentum. casein s. See argon in. colloid s. See collargol. diluted nitrate of s. See argent i nitras, under argentum. fused s. nitrate. S. nitrate melted and run into sticks [U. S. Ph., argent i nitras fusus~\. gelatin s. SeeS.albargin. mitigated s. nitrate. nitrate diluted with pota ium nitrate and cast into moulds [U. S. Ph., Br. Ph., argent i nitras mitigatus.l molded nitrate of s. See argent i nitras fusus, under argentum. s. citrate. The normal silver salt of citric acid, AgaCoHsO, used under the name of Crede's antiseptic, s. foil. Metallic s. in the form of thin leaves, used for coating -pills, s. ichthyolate. See ichthargan. s. lactate. AgCsPLOs-r-PbO, called also "actol," an antiseptic, s. nitrate. AgNOs, formed by the action of dilute nitric acid on metallic s. When deposited from its solution in nitric acid, it forms transparent rhombic crystals, crystallized s. nitrate, vitriol of s., the argent i nitras of the U. S. Ph. It fuses at 1980 C, and solidifies into a white, compact, crystalline ma , fused or molded s. nitrate, the argent i nitras of the Br. Ph. It is soluble in le than half its weight of water, has a caustic metallic taste, and exerts a caustic action on organic substances by coagulating their albumin, s. oxid. The monoxid of s., Ag20. It should not be triturated with substances which are readily oxidizable [U. S. Ph., tinate. See argent i oxidum~\. novargan. s. pros. sulphichthyolate. See ichthargan. s. vitellin. A soluble protein s. compound, described by Barnes and Hills; used in gonorrhea, etc. See argyrol.