GUM DROPS: See Confectionery.
GUM-LAC: See Oil.
GUMS USED IN MAKING VARNISH: See Varnishes.
GUN BARRELS, TO BLUE: See Steel.
GUN BRONZE: See Alloys, under Phosphor Bronze.
GUN COTTON: See Explosives.
GUN LUBRICANTS: See Lubricants.
GUNPOWDER: See Explosives.
GUNPOWDER STAINS.
A stain produced by the embedding of grains of gunpowder in the skin is practically the same thing as a tattoo mark. The charcoal of the gunpowder remains unaffected by the fluids of the tissues, and no way is known of bringing it into solution there. The only method of obliterating such marks is to take away with them the skin in which they are embedded. This has been accomplished by the application of an electric current, and by the use of caustics. When the destruction of the true skin has been accomplished, it becomes a foreign body, and if the destruction has extended to a sufficient depth, the other foreign body, the coloring matter which has been tattooed in, may be expected to be cast off with it.