Bowls for water-globes must be very large, and the wheels on them of

ten sides: on each side nail a piece of wood four inches long; and on

the outside of each piece cut a groove, wide enough to receive about

one-fourth of the thickness of a four-ounce case: these pieces of wood

must be nailed in the middle of each face of the wheel, and fixed in

an oblique direction, so that the fire from the cases may incline

upwards: the wheel being thus prepared, tie in each groove a

four-ounce case filled with a grey charge; then carry a leader from

the tail of one case to the mouth of the other.

Globes for these wheels are made of two in hoops, with their edges

outwards, fixed one within the other, at right angles. The diameter of

these hoops must be rather less than that of the wheel. Having made

the globe, drive in the centre of the wheel an iron spindle which must

stand perpendicular, and its length be four or six inches more than

the diameter of the globe.

The spindle serves for an axis, on which is fixed the globe, which

must stand four or six inches from the wheel; round one side of each

hoop must be soldered little bits of tin, two inches and a half

distance from each other; which pieces must be two inches in length

each, and only fastened at one end, the other ends being left loose,

to turn round the small port-fires, and hold them on: these port-fires

must be made of such a length as will last out the cases on the wheel.

There need not be any port-fires at the bottom of the globe within

four inches of the spindle, as they would have no effect but to burn

the wheel: all the port-fires must be placed perpendicularly from the

centre of the globe, with their mouths outwards, and must be clothed

with leaders, so as all to take fire with the second case of the

wheel; and the cases must burn two at a time, one opposite the other.

When two cases of a wheel begin together, two will end together;

therefore the two opposite end cases must have their ends pinched and

secured from fire. The method of firing such wheels is, by carrying a

leader from the mouth of one of the first cases to that of the other;

and the leader being burnt through the middle, will give fire to both

at the same time.

_Odoriferous Water-Balloons._

They are made in the same manner as air-balloons, but very thin of

paper, and in diameter one inch and three-fourths, with a vent of half

an inch diameter. The shells being made, and quite dry, fill them with

any of the following compositions, which must be rammed in tight:

these balloons must be fired at the vent, and put into a bowl of

water. Odoriferous works are generally fired in rooms.

_Composition I._ Saltpetre two ounces, flour of sulphur one ounce,

camphor half an ounce, yellow amber half an ounce, charcoal-dust

three-fourths of an ounce, salt of Benzoin half an ounce, all powdered

very fine and well mixed.

II. Saltpetre twelve ounces, meal-powder three ounces, frankincense

one ounce, myrrh half an ounce, camphor half an ounce, charcoal three

ounces, all moistened with the oil of spike.

III. Saltpetre two ounces, sulphur half an ounce, antimony half an

ounce, amber half an ounce, cedar raspings one-fourth of an ounce, all

mixed with the oil of roses and a few drops of bergamot.

IV. Saltpetre four ounces, sulphur one ounce, saw-dust of juniper half

an ounce, saw-dust of cypress one ounce, camphor one-fourth of an

ounce, myrrh two drachms, dried rosemary one-fourth of an ounce, all

moistened a little with the oil of roses.

N.B. Water-rockets may be made with any of the above compositions,

with a little alteration, to make them weaker or stronger, according

to the size of the cases.

_A Sea-fight with small Ships and a Fire-ship._

Having procured four or five small ships, of two or three feet in

length, make a number of small reports, which are to serve for guns.

Of these range as many as you please on each side of the upper decks;

then at the head and stern of each ship fix a two-ounce case, eight

inches long, filled with a slow port-fire composition; but take care

to place it in such a manner that the fire may fall in the water, and

not burn the rigging; in these cases bore holes at unequal distances

from one another, but make as many in each case as half the number of

reports, so that one case may fire the guns on one side, and the other

those on the opposite. The method of firing the guns is, by carrying a

leader from the holes in the cases to the reports on the decks; you

must make these leaders very small, and be careful in calculating the

burning of the slow fire in the regulating cases, that more than two

guns be not fired at a time. When you would have a broadside given,

let a leader be carried to a cracker placed on the outside of the

ship; which cracker must be tied loose, or the reports will be too

slow: in all the ships put artificial guns at the port-holes. Reports

for these and similar occasions are made by filling small cartridges

with grained powder, pinching them close at each end, and, when used,

boring a hole in the side, to which is placed a match or leader for

firing them.

Having filled and bored holes in two port-fires, for regulating the

guns in one ship, make all the rest exactly the same; then, when you

begin the engagement, light one ship first, and set it a sailing, and

so on with the rest, sending them out singly, which will make them

fire regularly, at different times, without confusion; for the time

between the firing of each gun will be equal to that of lighting the

slow fires.

The fire-ship may be of any size, and need not be very good, for it is

always lost in the action. To prepare a ship for this purpose, make a

port-fire equal in size with those in the other ships, and place it at

the stern; in every port place a larger port-fire, filled with a very

strong composition, and painted in imitation of a gun, and let them

all be fired at once by a leader from the slow fire, within two or

three diameters of its bottom; all along both sides, on the top of the

upper deck, lay star-composition about half an inch thick and one

broad, which must be wetted with thin size, then primed with

meal-powder, and secured from fire by pasting paper over it; in the

place where you lay this composition, drive some little tacks with

flat heads, to hold it fast to the deck; this must be fired just after

the sham guns, and when burning will show a flame all round the ship:

at the head take up the decks, and put in a tin mortar loaded with

crackers, which mortar must be fired by a pipe from the end of the

slow fire: the firing of this mortar will sink the ship, and make a

pretty conclusion. The regulating port-fire of this ship must be

lighted at the same time with the first fighting ship.

Having prepared all the ships for fighting, we shall next proceed with

the management of them when on the water. At one end of the pond, just

under the surface of the water, fit two running blocks, at what

distance you choose the ships should fight; and at the other end of

the pond, opposite to each of these blocks, under the water, fix a

double block; then on the land, by each of the double blocks, place

two small windlasses; round one of them turn one end of a small cord,

and put the other end through one of the blocks; then carry it through

the single one at the opposite end of the pond, and bring it back

through the double block again, and round the other windlass: to this

cord, near the double block, tie as many small strings as half the

number of the ships, at any distance; but these strings must not be

more than two feet long each: make fast the loose end of each to a

ship, just under her bowsprit; for if tied to the keel, or too near

the water, it will overset the ship. Half the ships being thus

prepared, near the other double block fix two more windlasses, to

which fasten a cord, and to it tie the other half of the ships as

before: when you fire the ships, pull in the cord with one of the

windlasses, to get all the ships together; and when you have set fire

to the first, turn that windlass which draws them out, and so on with

the rest, till they are all out in the middle of the pond; then, by

turning the other windlass, you will draw them back again; by which

method you may make them change sides, and tack about backwards and

forwards at pleasure. For the fire-ship fix the blocks and windlasses

between the others, so that when she sails out she will be between the

other ships: you must not let this ship advance till the guns at her

ports take fire.

_To fire Sky-Rockets under Water._

You must have stands made as usual, only the rails must be placed flat

instead of edgewise, and have holes in them for the rocket-sticks to

go through; for if they were hung upon hooks, the motion of the water

would throw them off: the stands being made, if the pond be deep

enough, sink them at the sides so deep, that, when the rockets are in,

their heads may just appear above the surface of the water; to the

mouth of each rocket fix a leader, which put through the hole with a

stick; then a little above the water must be a board, supported by the

stand, and placed along one side of the rockets; then the ends of the

leaders are turned up through holes made in this board, exactly

opposite the rockets. By this means you may fire them singly or all at

once. Rockets may be fired by this method in the middle of a pond, by

a Neptune, a swan, a water-wheel, or any thing else you choose.

_Neptune in his Chariot._

To represent Neptune in his chariot, you must have a Neptune (made of

wood, or basket-work) as big as life, fixed on a float large enough to

bear his weight; on which must be two horses' heads and necks, so as

to seem swimming. For the wheels of the chariot, there must be two

vertical wheels of black fire, and on Neptune's head a horizontal

wheel of brilliant fire, with all its cases, to play upwards. When

this wheel is made, cover it with paper or pasteboard, cut and painted

like Neptune's coronet; then let the trident be made without prongs,

but instead of them, fix three cases of a weak grey charge, and on

each horse's head put an eight-ounce case of brilliant fire, and on

the mouth of each fix a short case, of the same diameter, filled with

the white flame composition enough to last out all the cases on the

wheels: these short cases must be open at bottom, that they may light

the brilliant fires; for the horses' eyes put small port-fires, and

in each nostril put a small case half filled with grey charge, and the

rest with port-fire composition.

If Neptune is to give fire to any building on the water, at his first

setting out, the wheels of the chariot, and that on his head, with the

white flame on the horses' heads, and the port-fires in their eyes and

nostrils, must all be lighted at once; then from the bottom of the

white flames carry a leader to the trident. As Neptune is to advance

by the help of a block and cord, you must manage it so as not to let

him turn about, till the brilliant fires on the horses and the trident

begin; for it is by the fire from the horses (which plays almost

upright,) that the building, or work, is lighted, which must be thus

prepared. From the mouth of the case which is to be first fired, hang

some loose quick-match to receive the fire from the horses. When

Neptune is only to be shown by himself, without setting fire to any

other works, let the white flames on the horses be very short, and not

to last longer than one case of each wheel, and let two cases of each

wheel burn at a time.

_Swans and Ducks in Water._

If you would have swans or ducks discharge rockets into the water,

they must be made hollow, and of paper, and filled with small

water-rockets, with some blowing powder to throw them out; but if this

is not done, they may be made of wood, which will last many times.

Having made and painted some swans, fix them on floats; then in the

places where their eyes should be, bore holes two inches deep,

inclining downwards, and wide enough to receive a small port-fire; the

port-fire cases for this purpose must be made of brass, two inches

long, and filled with a slow bright charge. In the middle of one of

these cases make a little hole; then put the port-fire in the eye-hole

of the swan, leaving about half an inch to project out; and in the

other eye put another port-fire, with a hole made in it: then in the

neck of the swan, within two inches of one of the eyes, bore a hole

slantwise, to meet that in the port-fire; in this hole put a leader,

and carry it to a water-rocket, that must be fixed under the tail with

its mouth upwards. On the top of the head place two one-ounce cases,

four inches long each, driven with brilliant fire; one of these cases

must incline forwards, and the other backwards: these must be lighted

at the same time as the water-rocket; to do which, bore a hole

between them in the top of the swan's head, down to the hole in the

port-fire, to which carry a leader: if the swan is filled with

rockets, they must be fired by a pipe from the end of the water-rocket

under the tail. When you set the swan a swimming, light the two eyes.

_Water Fire-Fountains._

To make a fire-fountain for the water, first have a float made of

wood, three feet diameter; then in the middle fix a round

perpendicular post, four feet high, and two inches diameter; round

this post fix three circular wheels made of thin wood, without any

spokes. The largest of these wheels must be placed within two or three

inches of the float, and must be nearly of the same diameter. The

second wheel must be two feet two inches diameter, and fixed at two

feet distance from the first. The third wheel must be one foot four

inches diameter, and fixed within six inches of the top of the post:

the wheels being fixed, take 18 four or eight-ounce cases of brilliant

fire, and place them round the first wheel with their mouths outwards,

and inclining downwards; on the second wheel place 13 cases of the

same, and in the same manner as those on the first; on the third,

place eight more of these cases, in the same manner as before, and on

the top of the post fix a gerbe; then clothe all the cases with

leaders, so that both they and the gerbe may take fire at the same

time. Before firing this work, try it in the water, to see whether the

float is properly made, so as to keep the fountain upright.

THE END.

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