To Drive Or Ram Rockets Rockets Are Filled Hollow Otherwise They
would not ascend, and there is not a part that requires greater
attention than this stage of the process. One blow more or less with
the mallet will spoil the ascent.
The charge of rockets must always be driven above the piercer, and on
it must be rammed a thin head of clay; through the middle of which
bore a small hole to the composition, that when the charge is burnt to
the top, it may communicate its f
the head. To a rocket of four ounces, give to each ladle-full of
charge 16 strokes; to a rocket of 1 lb., 28; to a 2-pounder, 36; to a
4-pounder, 42; and to a 6-pounder, 56; but rockets of a larger sort
cannot be driven well by hand, but must be rammed with a machine made
in the same manner as those for driving piles.
The method of ramming wheel cases, or any other sort in which the
charge is driven solid, is the same as sky-rockets.
When you load the heads of your rockets with stars, rains, serpents,
crackers, scrolls, or any thing else, according to your fancy,
remember always to put a ladle-full of meal-powder into each head,
which will be enough to burst the head and disperse the stars, or
whatever it contains.
More
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The Solar Concerto
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Select any twenty cards; let any person shuffle them; lay them by pairs on the board, without looking at them. You next desire several persons, (as many persons as there are pairs on the table,) each to look at different pairs and remember what card... The Three Magical Parties
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There is probably no substance which is not in some measure a conductor of sound; but sound is much enfeebled by passing from one medium to another. If a man, stopping one of his ears with his finger, stop the other also by pressing it against the e... The Unconscious Incendiary
Let a person stand upon a stool made of baked wood, or upon a cake of wax, and hold a chain which communicates with the branch. On turning the wheel he will become electrified; his whole body forming part of the prime conductor; and he will emit spa... The Water Sun
Provide two portions of a hollow sphere, that are very shallow; join them together in such a manner that the hollow between them be very narrow. Fix them vertically to a pipe from whence a jet proceeds. Bore a number of small holes all around that p... Three Objects Discernible Only With Both Eyes
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