Small Gerbes.
Small Gerbes.—These are frequently called “White Fountains;” they differ but little, when used as Gerbes, from the foregoing: they are made of four, eight, or twelve ounce cases, of any length, pasted and made very strong: before they are filled, drive in about one diameter of their orifice high some good stiff clay, and when the case is filled, bore through the centre of the clay to the composition a vent-hole of common proportion, which must be primed and capped as before.
These cases are sometimes filled with Chinese fire, in this case the clay must not be used, but filled the same as cylindrical cases, and footed and primed in the same manner.