To Make The Appearance Of A Flash Of Lightning When Any One Enters A
Room with a lighted Candle.
Dissolve camphor in spirit of wine, and deposit the vessel containing
the solution in a very close room, where the spirit of wine must be
made to evaporate by strong and speedy boiling. If any one then enters
the room with a lighted candle, the air will inflame, while the
combustion will be so sudden, and of so short a duration, as to
occasion no danger.