Sometimes gold or silver rains are added to rockets, which give them a very beautiful appearance. A gold rain is made of 2 parts sawdust, 4 sulphur, 4 meal powder, 6 glass dust, 16 nitre, in all 32 parts. A silver rain may be made of 2 parts salt prunella, 8 sulphuret of antimony, 8 sulphur, 8 meal powder, and 14 nitre, in all 32 parts.
CATHERINE WHEELS.
These are very pretty fireworks, and are made to turn on a pivot. There are many recipes for the composition of which they are formed; 1 part camphor, 1 sulphur, 1 nitre, 2 meal powder. Another is, 3 parts iron filings, 4 sulphur, 12 nitre, 16 meal powder. This composition is to be rammed into small cases, and bound round a small wheel, having a hole for a pivot in the centre.
VARIOUS COLOURED FIRES.
The following recipes will give the young firework maker a great variety of the most beautiful fires. They should never be fired in a room, however, and always away from a dwelling.
CRIMSON FIRE.
The principal ingredient in this is nitrate of strontium, of which 40 parts are taken, with 13 of sulphur, 15 of chlorate of potass, 4 of sulphuret of antimony, and 2 of lamp-black. These, as all the ingredients for the other fires, should be rubbed in a ladle, and they may be used in a ladle or iron dish set on the ground.
BLUE FIRE.
The ingredients of blue fire are 20 parts; 12 of nitre, 4 of sulphur, 2 of sulphuret of antimony, and 2 of lamp-black.