See also:

• COLLODION (from the Gr. &M a' , glue)

COLLODION (from the Gr. &M a' , See also:

• GLUE (from the O. Fr. glu, bird-lime, from the Late Lat. gluten, glus, glue)

glue)  , a colourless, viscid fluid, made by dissolving See also:

• GUN

gun-See also:

• COTTON
• COTTON (Fr. coton; from Arab. qutun)
• COTTON, CHARLES (163o–1687)
• COTTON, GEORGE EDWARD LYNCH (1813–1866)
• COTTON, JOHN (1585–1652)
• COTTON, SIR ROBERT BRUCE

cotton and the other varieties of pyroxylin in a mixture of See also:

• ALCOHOL

alcohol and See also:

• ETHER, (C2H5)2O

ether . It was discovered in 1846 by See also:

• LOUIS
• LOUIS (804–876)
• LOUIS (893–911)
• LOUIS, JOSEPH DOMINIQUE, BARON (1755-1837)
• LOUIS, or LEWIS (from the Frankish Chlodowich, Chlodwig, Latinized as Chlodowius, Lodhuwicus, Lodhuvicus, whence-in the Strassburg oath of 842-0. Fr. Lodhuwigs, then Chlovis, Loys and later Louis, whence Span. Luiz and—through the Angevin kings—Hungarian

Louis See also:

• NICOLAS
• NICOLAS, SIR NICHOLAS HARRIS (1799–1848)

Nicolas Menard in See also:

• PARIS
• PARIS (also called ALEXANDROS)
• PARIS, ALEXIS PAULIN (1800-x881)
• PARIS, BRUNO PAULIN GASTON (1839-1903)
• PARIS, FRANCOIS DE (169o-1727)
• PARIS, LOUIS PHILIPPE ALBERT
• PARIS, TREATIES OF (1814-1815)

Paris, and independently in 1848 by Dr J . Parkers See also:

• MAYNARD, FRANCOIS DE (1582-1646)

Maynard in See also:

• BOSTON
• BOSTON, THOMAS (1676-1732)

Boston . The quality of See also:

• COLLODION (from the Gr. &M a' , glue)

collodion differs according to the proportions of alcohol and ether and the nature of the pyroxylin it contains . Collodion in which there is a See also:

• GREAT

great excess of ether gives by its evaporation a very tough film; the film See also:

• LEFT

left by collodion containing a large quantity of alcohol is soft and easily torn; but in hot climates the presence of an excess of alcohol is an See also:

• ADVANTAGE

advantage, as it prevents the rapid evaporation of the ether . Under the See also:

• MICROSCOPE (Gr. µucp6s, small, asenreiv, to %view)

microscope, the film produced by collodion of See also:

• GOOD, JOHN MASON (1764-1827)

good quality appears translucent and colourless . To preserve collodion it should be kept cool and out of the See also:

• ACTION

action of the See also:

• LIGHT

light; iodized collodion that has been discoloured by the development of See also:

• FREE

free See also:

• IODINE (symbol I, atomic weight '26.92)

iodine may be purified by the See also:

• IMMERSION (Lat. immersio, dipping),

immersion in it of a See also:

• STRIP

strip of See also:

• SILVER

silver See also:

• FOIL

foil . For the iodizing of collodion, ammonium bromide and iodide, and the iodides of See also:

• CALCIUM [symbol Ca, atomic weight 40.0 (o= x6)]

calcium and See also:

• CADMIUM (symbol Cd, atomic weight 112.4 (0=16))

cadmium are the agents employed (see See also:

• PHOTOGRAPHY (Gr. bias, light, and ypa w, to write)
• PHOTOGRAPHY, CELESTIAL

PHOTOGRAPHY) . Collodion is used in See also:

• SURGERY
• SURGERY (Fr. chirurgie, from Gr. Xetpoupyfa, i.e. hand-work)

surgery since, when painted on the skin, it rapidly dries and covers the skin with a thin film which contracts as it dries and therefore affords both pressure and See also:

• PROTECTION

protection . Flexible collodion, containing See also:

• CANADA

Canada See also:

• BALSAM (from Gr. f &X raµov, through Lat. balsamum, contracted by popular use to O. Fr. basme, mod. Fr. bdme; Eng. balm)

balsam and See also:

• CASTOR

castor oil, does not crack, but, on the other See also:

• HAND
• HAND (a word common to Teutonic languages; cf. Ger. Hand, Goth. handus)
• HAND, FERDINAND GOTTHELF (1786-185r)

hand, does not See also:

• CONTRACT
• CONTRACT (Lat. contract us, from contrahere, to draw together, to bind)

contract . It is therefore of less value . Collodion is applied to small aseptic wounds, to small-pox pustules, and occasionally to the end of the urethra in boys in See also:

• ORDER
• ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
• ORDER, HOLY

order to prevent nocturnal incontinence .

Collodion and crystals of carbolic See also:

• ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid, taken in equal parts, are useful in relieving toothache due to the presence of a carious cavity . Vesicating or Blistering Collodion contains cantharidin as one of its constituents . The styptic colloid of See also:

• RICHARDSON, GEORGE
• RICHARDSON, HENRY HOBSON (1838-1886)
• RICHARDSON, SAMUEL (1689-1761)
• RICHARDSON, SIR JOHN (1787-1865)

Richardson is a strong See also:

• SOLUTION (from Lat. solvere, to loosen, dissolve)

solution of See also:

• TANNIN, or TANNIC ACID

tannin in gun-cotton collodion . Similarly collodion may be impregnated with salicylic acid, carbolic acid, iodine and other substances . Small balloons are manufactured from collodion by coating the interior of See also:

• GLASS
• GLASS (O.E. glees, cf. Ger. Glas, perhaps derived from an old Teutonic root gla-, a variant of glo-, having the general sense of shining, cf. " glare," " glow ")
• GLASS, STAINED

glass globes with the liquid; the film when dry is removed from the glass by applying suction to the mouth of the See also:

• VESSEL (O. Fr. vaissel, from a rare Lat. vascellum, dim. of vas, vase, urn)

vessel . M . E . Gripon found (Conipt. rend., 1875) that collodion membranes, like glass, reflect light and polarize it both by See also:

• REFRACTION
• REFRACTION (Lat. refringere, to break open or apart)

refraction and reflection; they also transmit a very much larger proportion of radiant See also:

• HEAT (0. E. haktu, which like " hot," Old Eng. hat, is from the Teutonic type haita, hit, to be hot; cf. Ger. hitze, heiss; Dutch, hitte, heet, &c.)

heat, for the study of which they are preferable to See also:

• MICA

mica .