(3) on charcoal. Fuses readily and is reduced to metallic lead with the evolution of acid fumes. Forms a white incrustation of PbCl, and a yellow one of PbO. (4) in forceps. As the preceding. (5) in borax. As the preceding. (6) in mic. salt. As in borax. (7) with carb. soda. As alone on charcoal. (8) Special reactions. Gives the chlorine reaction with CuO and microcosmic salt. * * * * * Mineral. Cerusite Formula. [.Pb][..C]. Behavior (1) in glass-bulb. Decrepitates, gives off CO^{2}, turns yellow and fuses. (2) in open tube. -- (3) on charcoal. Is reduced to metallic lead, incrusting the charcoal around with PbO. (4) in forceps. As the preceding. (5) in borax. Gives the lead reaction. (6) in mic. salt. As in borax. (7) with carb. soda. As alone on charcoal. (8) Special reactions. In nitric acid dissolves with much effervescence. * * * * * Mineral. Anglesite Formula. [.Pb][...S]. Behavior (1) in glass-bulb. Decrepitates and gives off a small quantity of water. (2) in open tube. -- (3) on charcoal. In the oxidizing flame fuses to a clear bead, which becomes opaque on cooling. In reducing flame is reduced with much ebullition to a metallic bead and incrusts the charcoal around with PbO. (4) in forceps. As the preceding. (5) in borax. Gives the lead reaction and occasionally a slight iron and manganese reaction. (6) in mic. salt. As in borax. (7) with carb. soda. Is reduced yielding a metallic lead bead. The fused alkaline mass gives a sulphur reaction on silver. (8) Special reactions. -- * * * * * Mineral. Pyromorphite Formula. PbCl + 3[.Pb]^{3}[.....P]. Behavior (1) in glass-bulb. Decrepitates, and when strongly heated for some time, gives a slight white sublimate of PbCl. (2) in open tube. -- (3) on charcoal. In oxidizing flame fuses to a bead having a crystalline surface on cooling, and forms a thin film of PbCl on the charcoal In reducing flame fuses without reduction and on cooling assumes a polyhedral form. Incrusts the charcoal slightly with PbO. (4) in forceps. Fuses and colors the flame blue. (5) in borax. -- (6) in mic. salt. --