or

(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. --

(7) with carb. soda. Is reduced yielding a