FLUORITE n.
Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.…
FORCING n.
cessary to use considerable force in putting the two parts together. -- Forcing house, a greenhouse for the forcing of plants, fruit trees, etc. -- Forcing machine, a powerful press for putting together or separating two parts that are fitted tightly one into another, as for forcing a crank on a shaft, or for drawing…
FOX n.
A tribe of Indians which, with the Sacs, formerly occupied the region about Green Bay, Wisconsin; -- called also Outagamies. Fox and geese. (a) A boy's game, in which one boy tries to catch others as they run one goal to another. (b) A game with sixteen checkers, or some substitute for them, one of which is called the…
FRENCH a.
ot.), the berry of a species of buckthorn (Rhamnus catharticus), which affords a saffron, green or purple pigment. -- French casement (Arch.) See French window, under Window. -- French chalk (Min.), a variety of granular talc; -- used for drawing lines on cloth, etc. See under Chalk. -- French cowslip (Bot.) The Pri…