On platinum wire the saturated glass becomes at first opaque and
grey, but by a sustained blast is again rendered clear. On
charcoal the oxide is gradually reduced; the metal is
volatilized and in crusts the charcoal with oxide.

Behavior with Mic. Salt on Platinum wire

in the oxidizing flame.

As with borax.

in the reducing flame.

As with borax.

* * * * *

9. Oxide of Cadmium, CdO.

Behavior with Borax on Platinum wire

in the oxidizing flame.

When in very large proportion, dissolves to a clear yellow
glass, which becomes nearly colorless on cooling. When the oxide
is present in any considerable quantity, the glass can be
rendered opaque with an intermittent flame, and, with a larger
addition, it becomes so spontaneously on cooling.

in the reducing flame.