This lamp is put upon a table; the conjurer gives a signal to the
assistant to blow in a pipe, without directing the wind to the place
where it is laid, and nevertheless it extinguishes it immediately, as if
some person had blown it out.
_Explanation._ The stand which holds the lamp contains a pair of bellows
in its base, by which the wind is conveyed straight to the flame through
a little pipe. An assistant under the floor (or behind the curtain), by
moving machinery concealed under the table, works the bellows below to
extinguish the lamp at the moment desired.