Exploding Gas Bubbles
Adapt the end of a common tobacco-pipe to a bladder filled with
hydrogen gas, and dip the bowl of the pipe into soap-suds, prepared as
if for blowing up soap bubbles; squeeze out small portions of gas from
the bladder into the soap-suds, and the bubbles will ascend into the
air with very great rapidity, until they are out of sight. If a
lighted taper or candle be applied to the bubbles as they ascend from
the bowl of the pipe, they will explode with a loud noise.