A beautiful green fire may be thus made: Take of flour of sulphur, thirteen parts; nitrate of baryta, seventy-seven; oxy-muriate of potassa, five; metallic arsenic, two; and charcoal, three. Let the nitrate of baryta be well dried and powdered; then add to it the other ingredients, all finely pulverized, and exceedingly well mixed and rubbed together. Place a portion of the composition on a small tin pan having a polished reflector fitted to one side, and set fire to it, when a splendid green illumination will be the result. By adding a little calamine, it will burn more slowly.
PURPLE FIRE.
A purple fire is produced by dissolving chloride of lithium in spirits of wine, and when lighted it will burn with a purple flame.
WHITISH-BLUE FIRE.
Take of nitrate of baryta, twenty-seven parts, by weight; of sulphur, thirteen; of chloride of potassa, five; of realgar, two; and of charcoal three parts. Incorporate them completely, and when inflamed they will emit a whitish-blue light, accompanied by much smoke. This light is much used in fairy scenes.
YELLOW FIRE.
Mix some common salt with spirits of wine, in a metal cup, and set it upon a wire frame, over a spirit lamp. When the cup becomes heated, and the spirits of wine ignited, the other lights on the stage should be extinguished, and that of the spirit lamp shaded in some way. The result will be, that the whole group, faces, dresses, will be of a strong yellow tint.
COLORED LIGHTS.
Colored lights can be produced by filling globes with colored liquid, and placing them in front of the lamps, like those we see in the windows of the chemists' shops.