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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.