to the mouth of each rocket fix a leader which put through the hole with the 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 anything else you chuse."
It will be seen that the rockets themselves are above the
surface, which seems more reasonable than the instructions of
some writers, who, to get the effect of a rocket rising from
actually beneath the surface, give themselves an infinite
amount of trouble to render the case and connections waterproof.
The effect seen from a short distance is identical.
