Behavior with Borax on Platinum wire

in the oxidizing flame.

Even when in large proportion, dissolves to a clear glass, which
is yellow when warm, but almost entirely loses its color on
cooling. On charcoal, the antimonious acid may be almost
expelled, so that tin produces no further change.

in the reducing flame.

A bead, that has only been treated for a short time in the
oxidizing flame, when submitted to the reducing flame becomes
grey and turbid from the reduced antimony. This soon volatizes
and the glass again becomes clear. The addition of tin renders
the glass ash-grey or black, according to the amount of oxide it
contains.

Behavior with Mic. Salt on Platinum wire

in the oxidizing flame.

Dissolves with ebullition to a glass of a pale yellow color
while warm.

in the reducing flame.

On charcoal, the saturated glass becomes at first dull, but as
soon as the reduced antimony is volatilized, it again becomes
clear. With tin, the glass is at first rendered grey by the