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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