Page:Willich, A. F. M. - The Domestic Encyclopædia (Vol. 2, 1802).djvu/338

306&#93; •o6] FLI 4Q-0; but experiments are still wanting to ascertain its effect on animal substances of different kinds. We think, however, there can be little doubt entertained of the successful result. — With re- sped to the best method of pick- hng meat, we refer to the articles Beef and Pickle. FLEUK-WORM, or Flewk- wokm, Fasc'wla hcpat'ica, L. an insect, of the size and shape of a child's finger-nail : it creeps up the gall-ducts from the intestines, and, preying upon the livers of sheep, occasions coughs and consumptions in those animals. Sheep, pasturing in moist grounds, are frequently attacked by this in- sect, which Dr. Dakwin conjec- tures to arise from the bile becom- ing too much diluted,in consequence of their watery food 5 so that it does not possess sufficient acrimony to prevent the depredations of fiewk- worms. The remedy in general prescrib- ed, is to dissolve one ounce of salt in water j but Dr. Darwin sug- gests, that the salt may be used with greater advantage, if hay were moistened with the solution, which would thus supply more wholesome nourishment, than is usually given to sheep troubled with these vermin. FLINT, or Silex, L. a kind of opaque stone, which is, in gene* ral, of a roundish form, covered with a white crust, of a smooth uniform texture, and so hard, as to emit fire, when stricken against steel. U is chiefly used in the ma- nufacture of glass. — For this pur- pose, the hardest flints are sclci led, such as will resist the file, and be- come white when calcined. They are first cleansed from the white erust adhering to them 3 then burnt FLO in a strong fire, and thrown, while red-hot, into cold water. After cleaning them of the ashes, the flints are finely pulverized in an iron mortar, and passed through a sieve. Weak aqua-fortis is next poured on the powder, with a view to dissolve any particles of iron perhaps acquired from the mortar. This mixture is to be re- peatedly stirred, and then left to subside, after which the liquor is to be poured off, the powder wash- ed several times with hot water, and, lastly, dried. In this state it is fit to be converted into glass. In the year 1/-12, an oil was prepared from flints by Messrs, Betton and Wellington, of Shrewsbury, for which they ob- tained a patent. It may be made of 4oz. of flints calcined, pulve- rized, and mixed with 12 oz. of salt of tartar. These ingredients are next to be melted together in a crucible over a strong fire, and run into an open glass, which stiongly attracts moisture from the air, and is completely soluble in water, ex- cepting a small portion of earthy matter. ' This glass is then to be pulverized, and set in a cellar where it will spontaneously liquefy into an oil; which the patentees have affirmed to be efficacious in cur- ing obstinate rlw lamaUSTOS, — We doubt, however, the utility of this medicine, as there arc other local remedies, more proper and effica- cious in that painful conip.aint. — ► See Rheum atism. Flixwbed. See Cress. Ft ATI we Land. See IRRI- GATION. FLOOR, in architetfure, the area, or lower part of a room, vhjch is in general covered with boards. the best wood that can be se- lttki