Behavior with Mic. Salt on Platinum wire

in the oxidizing flame.

With an equal proportion of oxide, this salt is not so strongly
colored as borax. A small amount imparts a green color in the
warm and a blue in the cold. With a very large addition of
oxide, the glass is opaque in the hot state, and after cooling
of a greenish-blue.

in the reducing flame.

A tolerably saturated glass assumes a dark green color under a
good flame, and on cooling becomes of an opaque brick-red, the
moment it solidifies. A glass containing but a small proportion
of the oxide becomes equally red and opaque on cooling, if
treated with tin upon charcoal.

* * * * *

15. Oxide of Mercury, HgO.

Behavior with Borax on Platinum wire

in the oxidizing flame.

No reaction.

in the reducing flame.