FERROCYANIDE n.
ture of almost all cyanogen compounds, and the basis of the ferric ferrocyanate, prussian blue. It is obtained by strongly heating together potash, scrap iron, and animal matter containing nitrogen, as horn, leather, blood, etc., in iron pots.
FIRE n.
The discharge of firearms; firing; as, the troops were exposed to a heavy fire. Blue fire, Red fire, Green fire (Pyrotech.), compositions of various combustible substances, as sulphur, niter, lampblack, etc., the flames of which are colored by various metallic salts, as those of antimony, strontium, barium, etc. -- Fi…
FLAX n.
e L. usitatissimum, which has a single, slender stalk, about a foot and a half high, with blue flowers. The fiber of the bark is used for making thread and cloth, called linen, cambric, lawn, lace, etc. Linseed oil is expressed from the seed.
FOSSIL a.
or not; as, fossil plants, shells. Fossil copal, a resinous substance, first found in the blue clay at Highgate, near London, and apparently a vegetable resin, partly changed by remaining in the earth. -- Fossil cork, flax, paper, or wood, varieties of amianthus. -- Fossil farina, a soft carbonate of lime. -- Fossil…