FLAT 



478 



FLOATING 



Moulding. See Moulding-flask. F.-press, a screw- 

 press for closing the sections of a vulcanite flask after 

 packing. F., Vulcanite, in dentistry, an iron, 

 brass, or bronze box for holding the model and teeth 

 in the vulcanized-rubber process. It is generally 

 divided into two sections, one of which is closed by 

 an adjustable lid, the other having a bottom, and is 

 locked by pins or bolts. 



Flat [ME., flat]. Lying on one plane. F.-ear. 

 See Morel's Ear. F.-foot, depression of the plantar 

 arch ; it differs from splay-foot or talipes valgus in that 

 the sole is not everted. F.-worm. See Tape-worm. 



Flatulence [flat' ' -u-lentz)[flatulentia ; flatus, breath]. 

 A condition marked by the presence of gases in the 

 alimentary canal. It arises mainly from the fermenta- 

 tion of the contents of the stomach and intestines. 



Flatulent (flat' -u- lent) [flatus, breath]. Character- 

 ized by, or attended with the presence of, flatulence. 



Flatus {flat-' us) [L.]. A term applied to gases in the 

 digestive tract. 



Flavanilin (flav-an'-il-in) \_flavus, yellow; anilin], 

 C 16 H U N 2 . A beautiful yellow dye produced by heat- 

 ing acetanilid with zinc chlorid to 270 C. It forms col- 

 orless crystals that become yellow on exposure to the 

 air. See Pigments, Conspectus of. 



Flavaurin (flav-aw'-rin) . See Pigments, Conspectus of. 



Flavescent {Jlav-es' '-ent) \_flavescere , to become yellow]. 

 Yellowish. 



Flavin ( flav'-in) [flavus, yellow] . A yellow dye-stuff 

 prepared from quercitron-bark by the action of H. 2 S0 4 . 



Flavophenin (flav-o-fe' '-nin) \_flavus, yellow; phenyl], 

 C 26 H 18 N 4 6 . A yellow coloring-matter. See Chry- 

 samin. 



Flavopurpurin (flav-o-pur 1 '-pu-rin) [flavus, yellow ; 

 purpura, purple] , C M H 8 5 . A coloring-matter occur- 

 ring in golden-yellow, acicular crystals. See Pig- 

 ments, Conspectus of. 



Flavus (flav'-us) [L.]. Yellow. 



Flaw [ME., flawe, a flake]. A disease in which the 

 skin recedes from the nails. 



Flax (flaks) [ME., flax, flax]. The best known and 

 probably the most valuable of the bast-fibers, derived 

 from the flax-plant, Linum usitatissimum. The linen 

 fiber, when cleansed, has a blonde or even white color, 

 a white, silky luster, and great strength. It is less 

 pliant and elastic than cotton, but is a better conduc- 

 tor of heat. Chemically, it is, like cotton, a pure cel- 

 lulose. F., New Zealand, a fiber obtained from 

 the leaves of Phormium tenax, which acquires a 

 length of one to two meters. The fiber, as prepared 

 by hand-scraping, is soft, white, and of silky luster. 

 Its chief value is for rope-making and for coarse tex- 

 tiles. The rope made from this fiber is, however, 

 weakened when wet by sea- water, and must therefore 

 be kept well-oiled. F. -dresser's Phthisis, a form 

 of pneumonokoniosis. F.-seed. See Linum. 



Flay (flu) [ME., fleen, to skin]. To skin. 



Flea (fie) [ME., flee, a flea]. See Pulex, and Parasites 

 (Animal), Table of . F.-bane. See Erigeron. F.- 

 bite, the bite of a flea. F. -powder. See Buhach. 



Fleam (flem ) [<j>Mr(>, a vein] . A phlebotome ; a vet- 

 erinarian's lancet for venesection. 



Flechsig, Method of. A method of differentiating 

 nerve-tracts in the brain and spinal cord. It consists 

 in noting the successive periods at which the fibers of 

 the tracts become medullated during the process of 

 development. F., Tract of. See Tract. 



Fleck's Disinfectant. A disinfectant solution containing 

 copperas, 70 parts, and chlorinated lime 20 parts, in 

 1000 parts of water. 



Fleece of Stilling. An interlacing of fibers passing 

 from the cortex about the dentatum of the cerebellum. 



Fleischl's Law. See Law. 



Fleischmann's Bursa. The sublingual bursa. 



Fleitmann's Test. See Tests, Table of. 



Flema salada (fla'-mah sal-a'-da) [Sp.]. Synonym 

 of Acrodynia. 



Fleming's Tincture. An alcoholic preparation of 

 aconite, stronger than the official tincture. Dose, two 

 minims. 



Flemming's Method. A method of preparing tissue 

 for histologic study. Small bits of tissue are fixed in 

 0.1 to 0.5 per cent, solution of chromic acid, and the 

 hardening completed with alcohol. F.'s Mixture, 

 a mixture used in histologic investigations. Its com- 

 position is as follows : One per cent, solution of osmic 

 acid, 10 parts ; one per cent, solution of chromic acid, 

 25 parts; two per cent, solution of acetic acid, 5 parts, 

 water 60 parts. 



Flesh [ME., flesh, flesh]. The soft tissues of the body, 

 especially the muscles. F. -brush, a brush for rubbing 

 the surface of the body. F., Goose. See Cutis an- 

 serina. F. -juice, the juice derived from meat by ex- 

 pression. F., Proud, a colloquial term for the soft 

 and inflamed granulations of the edges of a wound. 

 F. -wound, a slight or superficial wound. F.-worm. 

 See Thread-worms. 



Fleshy (flesh' -e) [ME. , flesh, flesh]. Mainly composed 

 of muscular tissue. 



Fleury's Method. See Treatment, Methods of. 



Flexed-toe (Jlekst'-to\. See Hammer-toe. 



Flexibilitas (fleks-ib-W -it-as) [L.]. Flexibility. F. 

 cerea, a condition of the limbs in catalepsy in which they 

 resist passive movement and seem as if made ofwax. 



Flexible (fleks'-ib-l) [flexus, bent]. That which may 

 be bent. F. Catheter, a catheter made of flexible 

 substance. F. Collodion. See Pyroxylin. F. Pillar. 

 See Pillar. 



Flexile (flex'-il) [flexilis, pliable]. Easily bent. 



Flexion (flek' -shun) [flexus, bent]. The operation or 

 process of bending ; the condition of being bent ; the 

 opposite of extension. F., Forcible, in surgery, a 

 mode of treating aneurysm by a forcible bending, as, 

 for example, of the knee, so as to compress the popliteal 

 artery, thereby reducing the volume of blood ; also a 

 means of breaking up articular adhesions by mechanical 

 bending. F. and Extension, certain passive Swedish 

 movements used principally for regulating the circula- 

 tion in certain parts, and for relieving local conges- 

 tion. F. -stage of Labor, one of the stages of labor, 

 consisting in a bending of the fetal head forward toward 

 the chest. 



Flexor (fleks'-or) [flexus, bent]. Any muscle that 

 bends a limb or part. See Muscles, Table of. 



Flexuous (fleks'-u-us) [flectere, to bend], in biology, 

 alternately curved in opposite directions. 



Flexura (fleks-u'-rah) [L. , a bending]. A bending 

 or curve in an organ. In veterinary anatomy, the 

 so-called knee (in fact the wrist) of the horse. 



Flexure (fleks'-ur) [flexura, a bending]. A bending. 

 F., Sigmoid. See Sigmoid Flexure. 



Flighty (fli'-te) [Dan., vlugtig, volatile]. Slightly 

 delirious. 



Flint's Formula. See Alimentation, Rectal. F.'s 

 Murmur. See Signs and Symptoms, Table of F.'s 

 Pill, a pill containing half a grain of iron combined 

 with all the inorganic salts found in the blood in the 

 normal proportion, except chlorid of sodium, which is 

 in excess. 



Floating (flot'-ing) [ME., flolen, to float]. Free to 

 move around. F. Kidney, one that is misplaced <>r 

 movable ; wandering. F. Liver, a movable liver. F. 

 Ribs. See Ribs. F. Spleen, one that is separate 

 from its attachments, and displaced. 



