Feu mort. Dead light; dead fire. See [page 485.]

Feux de Gouvernement. State or public fire-works.

Filagere. The thread used for strangling.

Flamboyante. A species of rocket, which, from its effects in the atmosphere, is called the comet.

Foudres. Thunderbolts, lightnings; in pyrotechny, the preparations, used to imitate thunderbolts; thunder powder.

Foudroyante. A case or rocket, which imitates thunder: Fougette. (See Baguette à feu.)

Fougasse. A small mine.

Fougues. Small rockets, without sticks.

Fourneau. Furnace. A mine. The chamber of a mine.