ry 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 s