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