We condense from an English exchange a description, of the white, or rather ... it could have happened to a manufactory of common black gunpowder. We now come to the process of manufacture.

To make these loud explosions, which are usually accompanied by a bright white flash, firework manufacturers use mixtures of perchlorate, a different kind of explosive than black powder.

Want red, white, and blue? Burn strontium carbonate ... This starchy stuff is often used to bind black powder and metal salts into pellets that explode into colorful stars. The all-purpose ...