in the oxidizing flame.

In small quantity dissolves slowly into a clear colorless glass,
which, when cold, remains clear, and cannot be rendered opaque
with an intermittent flame. If a saturated bead, which has been
allowed to cool, be reheated to incipient redness, it loses its
rounded form and exhibits imperfect crystallization.

in the reducing flame.

A glass containing but little oxide undergoes no change. If much
of the latter be present, a part may be reduced upon charcoal.

Behavior with Mic. Salt on Platinum wire

in the oxidizing flame.

In small quantity dissolves very slowly to a colorless glass,
which remains clear on cooling.

in the reducing flame.

The glass undergoes no change, either on charcoal or platinum wire.

* * * * *

12. Oxide of Bismuth, BiO^{3}.

Behavior with Borax on Platinum wire