II. Meal powder nine ounces, and charcoal one ounce.

Port-fires for firing Rockets, &c.

I. Saltpetre twelve ounces, brimstone four ounces, and meal powder two

ounces.

II. Saltpetre eight ounces, brimstone four ounces, and meal powder two

ounces.

III. Saltpetre one pound two ounces, meal powder one pound and a half,

and brimstone ten ounces. This composion must be moistened with one

gill of linseed oil.

IV. Meal powder six ounces, saltpetre two pound two ounces, and

brimstone ten ounces.

V. Saltpetre one pound four ounces, meal powder four ounces, brimstone

five ounces, and saw dust eight ounces.

VI. Saltpetre eight ounces, brimstone two ounces, and meal powder two

ounces.

Port-fires for Illuminations.

Saltpetre one pound, brimstone eight ounces, and meal powder six

ounces.

For Cones or Spiral Wheels.

Saltpetre one pound and a half, brimstone six ounces, meal powder

fourteen ounces, and glass dust fourteen ounces.

For Crowns or Globes.

Saltpetre six ounces, brimstone two pound, antimony four ounces, and

camphor two ounces.

For Air Ballóón Fuzes.

I. Saltpetre one pound ten ounces, brimstone eight ounces, and meal

powder one pound six ounces.

II. Saltpetre one pound and a half, brimstone eight ounces, and meal

powder one pound eight ounces.

Serpents for Pots des Brins.

Meal powder one pound eight ounces, saltpetre twelve ounces, and

charcoal two ounces.

For Fire Pumps.

I. Saltpetre five pound, brimstone one pound, meal powder one pound

and a half, and glass dust one pound.

II. Saltpetre five pound eight ounces, brimstone one pound, meal

powder one pound eight ounces, and glass dust one pound eight ounces.

For a Slow White Flame.

Artificial fire-works · 第 42 / 67 题