glass 
Platinized glass, plate-glass to which a thin film of plat- 
inum h:is been applied, transparent when held against a 
strong light, but capable of giving a reflection when the 
light is on the same side as the spectator. E. II. Knight. 
Pot-metal glass, glass which has been tinted while 
in a state of fusion, and is therefore colored throughout 
its substance. Pressed glass, glass brought to slmpr 
in a mold by a plunger. Reticulated glass, a variety of 
filigree-glass in which two filigree cases or hollow cylin- 
ders are used, one within the other, for a glass vessel. The 
threads of opaque or colored glass, being set in opposite 
directions, produce the appearance of a reticulation. There 
is usually a small air-bubble in each mesh or space be- 
tween the threads. Rice-stone glass. Same as alaliai- 
ter glass. Rolled glass, an inferior quality of plate-glass 
for which the molten material is dipped from the pot with 
a ladle and rolled to the proper thickness on an iron table. 
Ruby glass, glass of deep-red color. A good color is 
obtained by the use of copper, but the most beautiful is 
got by the use of gold. Ruby window -glass is generally 
flashed, else its color would be too dark, and it would ap- 
pear hardly transparent. For the windows of photograph- 
ic dark-rooms the copper ruby glass is used, as the photo- 
graphic chemicals are sensitive to the light transmitted 
by gold glass. Silvered glass, (a) A glass prepared for 
mirrors, having a metallic layer applied to one side of it. 
See looking -giant, (b) Glass made ornamental by the ap- 
plication of a white metallic film to the unexposed side, 
giving it a silvery luster. Soluble glass, a silicate of pot- 
ash or soda in which the alkali predominates. It is made 
by melting silicious sand with a large proportion of alkali, 
is soluble in hot water, but is not affected by ordinary at- 
mospheric changes, and is thus used to form a protective 
coating on plastered walls, etc. When used as a cement it 
is called mineral liine. Also called water-glass. Spun 
glass, thin glass wire drawn from glass partly fused. 
When done on a small scale the glass is heated by the 
blowpipe, but other means are used where the material is 
produced in quantity. Stained glass, (a) Properly, 
colored glass used in windows; particularly, such glass 
when formed into decorative windows or mosaics of trans- 
parent light. Windows representing designs in colored 
and enameled glass came into use early in the eleventh 
century, and attained perfection as compositions in gor- 
geous and jeweled yet harmonious color at the close of 
the twelfth and throughout the thirteenth century. After 
the thirteenth century, while much admirable work was 
done, the tendency asserted itself to paint pictures on the 
glass, following more and more closely the manner and 
ideals of ordinary opaque pictures, until in the course of 
the sixteenth century the art, having become grotesque, 
died out, and colored windows gave place to those of 
plain glass. During, the present century this beautiful 
art has been revived, following the inverse process of its 
fall, so that the harsh, glaring, and perfunctory attempts 
of the early years of the modern medieval revival have 
now given place to work of real merit, in which the pic- 
tures are made to fill their true purpose of arrangements 
of glowing and transparent light, instead of imitating the 
methods of painting on an opaque surface, (b) Less prop- 
erly, same as enameled glass. See glass-painting. Stop- 
ping the glass. See the extract. 
During the last two or three hours the fireman or tiseur 
ceases to add fuel ; all the openings are shut, and the glass 
is allowed to assume the requisite fluidity ; an operation 
called stopping the glass, or performing the ceremony. 
Ure, Diet., II. 664. 
Stove-glass, sheets of mica used in the fronts of stoves, 
etc. Tempered, toughened, or hardened glass. () 
Glass hardened by being plunged at a high temperature 
into an oleaginous bath, according to a process invented 
by SI. de la Bastie in 1875 and following years. Such glass 
cannot be cut by the diamond, and will endure heavy blows 
and great changes of temperature, but when fractured 
flies into minute fragments. (6) Olass that has been 
heated and then suddenly cooled, under the process of 
F. Siemens. When the articles to be made are such as 
are generally molded, the molten glass is run into suitable 
molds and squeezed while it is highly heated, the mold 
cooling it sufficiently without the liquid bath. To crush 
a glass. See to crush a cup, under crush. to draw 
the glass, to perform the operation of testing the glass, 
after the founding and refining are finished, to determine 
whether it is ready for casting. It is done by plunging the 
end of a rod into the pot. To get a glass in one's head, 
to have one's drink go to one's head ; become flustered 
with drink. 
It is common for a number of them that have got a glass 
in their heads to get up into some belfry and ring the 
bells for hours together for the sake of exercise. 
Slrutt, Sports and Pastimes, p. 40. 
Toughened glass. See tempered glass. Venetian 
glass, ornamental glassware 
made at and near Venice. See 
def. 1. Sometimes called Mu- 
rano glass, Venice glass. 
No illustrations can do justice 
to the endless diversities of Ve- 
netian glasses; they rival in 
lightness those of Greece and 
Rome. ... To examine them 
is to imagine that the inventive 
faculty can go no farther. 
A. M. Wallace-Ditnlop, Mag. of 
[Art, March, 1884. 
Venice glass. Same as Vene- 
tian glass. 
Though it be said that poyson 
will break a Vfnfce-glaxs, yet 
have we not met with any of 
that nature. 
Sir T. Browne,\n\g. Err.,vil. 17. 
Volcanic glass, obsidian. 
Water-glass. Same as soluble 
glagf. (see also plate-glass.) 
II. n. [Attrib. use of 
the noun. The older adj. is t/la-en. q. v.] Made 
of glass; vitreous: as, a glass bottle Glass en- 
amel, tear, wool, etc. See the nouns. Glass house, a 
2531 
house or structure largely composed of glass : sometimes 
written glass-hnusn as a name for a greenhouse. Glass 
mosaic, mosaic made of small tesserse of glass, the colors 
being produced by glass of different colors and by various 
enamels, and the gold by gold-leaf protected by a thin 
coating of clear glass, usually over an opaque vermilion 
ground. See mosaic. To live in a glass house, to be 
in a vulnerable state or condition morally; be open to 
damaging retort: in allusion to the proverb, "They who 
live in glass houses should not throw stones." 
glass (glas), c. *. [< glass, n. The older verb 
is ijltizc, q. v.] 1. To case in glass ; cover with 
or as if with glass; protect by a covering of 
glass-glazed 
Example of Modern Vene- 
tian Glass, with spray of flow- 
ers in color on a transparent 
body. 
Methought all his senses were lock'd in his eye, 
As jewels in crystal for some prince to buy ; 
Who, tend'ring their own worth, from whence they were 
glass'd, 
Did point out to buy them, along as you pass'd. 
Shak., L. L. L., ii. 1. 
No specialized hot-house treatment, as if a boy were an 
orchid or other frail exotic to be glassed away from the 
rough air of manhood. The Century, XXXII. 862. 
2. To make glassy; give a glazed surface to; 
glaze or polish. 
I have observed little grains of silver to lie hid in the 
small cavities, perhaps glassed over by a vitrifying heat, 
in crucibles wherein silver has been long kept in fusion. 
Boyle. 
To obtain the finish, the hides are blacked on the flesh 
side with a preparation of soap and lamp-black . . . and 
again glassed. Uarper's Mag., LXX. 278. 
3. To reflect, as a mirror or other reflecting 
surface ; show or observe a reflection of. 
Then take a shield I have of diamonds bright, 
And hold the same before the warrior's face, 
That he may glass therein his garments light. 
Fairfax, tr. of Tasso, xiv. 77. 
Thou glorious mirror, where the Almighty's form 
Glasses itself in tempests. 
Byron, Childe Harold, iv. 183. 
Here and there on a jutting point a light blossomed, its 
duplicate glassed in the water, as if the fiery flower had 
dropped a petal. A.ldrich, Ponkapog to Pesth, p. 160. 
glass-argonaut (glas ' ar " go - nat) , n. A hete- 
ropod of the family Firolida; (or Carinariidic) : 
so called because the shell is thin and glass- 
like, and shaped like that of an argonaut. 
glass-blower (glas'blo"er), n. One whose busi- 
ness is to blow and fashion glass. 
glass-blowing (glas'blo"ing), . The process 
of making glassware and window-glass by tak- 
ing a mass of viscid glass from the melting- 
pot on the end of a blowing-tube and inflating 
it by blowing through the tube. For common 
window-glass the hot blown mass is extended into a long 
cylinder by swinging a bulb of hot glass from a bridge on 
which the workman stands. It is then cut open and flat- 
tened out in the flattening-furnace. For fine window-glass 
the bulb of blown glass is cut open and whirled round in 
the flashing-furnace till it flashes, or opens into a flat disk 
with a bull's-eye in the center. A small quantity of glass is 
also put into molds, and then expanded by blowing till it 
fills the molds. Blown glass is also cut and shaped while 
hot, and decorated, twisted, and united with other pieces 
of glass in many different ways. The term glass-blowing 
is also applied, though incorrectly, to the making of spun 
glass and filigree-glass by melting and molding rods of soft 
Bohemian glass in the flame of a blowpipe. Toys and ware 
made in this way are not properly called blown glass, but 
filigree-glass. 
glass-cavity (glas'kav"i-ti), . See inclusion. 
glasschord (glas'k6rd),"n. A musical instru- 
ment, having a keyboard like a pianoforte, in 
which the tone is produced by cloth-covered 
hammers and bars or bowls of glass. 
glass-cloth (glas ' kldth), n. 1. Linen cloth 
usually woven with a slight open pattern of 
colored threads, like gingham, used originally 
as a towel for drying fine porcelain, glass, etc., 
and now employed as a background for em- 
broidery. 
Well scrape with glass or steel scraper, afterwards with 
finest glass-cloth. Workshop Receipts, 1st ser. , p. 407. 
2. A woven fabric made of threads of glass, 
which are very pliable when extremely thin. 
The fibers are bunched without twisting, and 
the stuff is woven of these bunches or groups. 
glass-coach (glas'koch'), M. A coach, superior 
to a hackney-coach, hired for the day or any 
short period as a private carriage: so called 
because originally only private carriages had 
glass windows. [Eng.] 
My Lady Peterborough being In her glass-coach, with 
the glass up, and seeing a lady pass by in a coach whom 
she would salute, the glass was so clear, that she thought 
it had been open, and so ran her head through the glass. 
Pepys, Diary, III. 254. 
I have been to Holland House. I took a glass-coach, 
and arrived, through a fine avenue of elms, at the great 
entrance toward seven o'clock. 
Macaulay, Life and Letters, I. 191. 
glass-crab (glas'krab), . A crab of the spuri- 
ous genus Pliyllosoma, or of the spurious order 
Phi/Hosomatn that is, any young shrimp of 
either of the families Palianrirln' and KryVaridte. 
Glass-crab ( larva ol Palinurus\. 
These larvsp are as thin as paper, flat and trans- 
parent, and have no resemblance to the adult. 
glass-CUtter (glas'kut/er), n. 1. One whose 
occupation is the cutting of glass, or the grind- 
ing of it into various ornamental forms. 2. 
That which cuts or is used for cutting glass. 
glass-cutting (glas'kut'iug), . The art of or- 
namenting the surface of glass vessels or ware 
by grinding it. The first or rough grinding is done 
with an iron wheel with sand and water, finer grinding 
with fine stone wheels, and finishing and polishing with 
wooden, cork, or brush wheels, or wheels covered with 
leather, india-rubber, or cloth, charged with emery-pow- 
der, pumice-stone powder, putty-powder, rouge, or other 
polishing material. Only flint-glass is used, and ware so 
treated is called cut glass. Glass is also said to be cut 
when treated by the sand-blast, whenever the work is 
more than a simple depolishing of the surface. See sand- 
blast. 
glass-dust (glas'dust), ii. Glass more or less 
finely powdered, used in the arts for grinding 
and polishing, and especially for the manufac- 
ture of glass-paper (which see), it is imported 
into the United States from those countries where glass 
is made in quantity, as Bohemia, and where refuse pieces 
are utilized in this way. 
glassent (glas'n), a. [< glass, n., + -eift. The 
older form is glazen, q. v.] Glass; glassy; 
glazed. 
Buy a loaf of wace ; 
Do shape it bairn and bairnly like, 
And in it twa glassen een you'll put. 
Willie's Ladye (Child's Ballads, I. 165). 
He that no more for age, cramps, palsies, can 
Now use the bones, we see doth hire a man 
To take the box up for him ; and pursues 
The dice with glassen eyes to the glad viewes 
Of what he throws. B. Jonson, Epistle to a Friend. 
glass-engraving (glas'en-gra"ving), . The 
art of decorating glass by grinding and depol- 
ishing; glass-cutting. 
Qlasserian, a. See Glnserian. 
glass-eye (glas'i), M. 1. A popular name of a 
Jamaican thrush, Turdiis jamaicensis : so called 
from the whitish iris. 2. A local name of the 
wall-eyed pike of the United States, Stizoste- 
dion vitreum, a pike-perch of the family Perci- 
dw. See cut under piTcc-percli. 
glass-eyed (glas'id), a. Having a white eye, 
or one which in some other respect, as texture 
or fixedness, is likened to glass or to a glass 
eye; wall-eyed; goggle-eyed. 
glass-faced (glas'fast), . Having a face of 
glass, or like a glass or mirror. 
From the glass-fac'd flatterer 
To Apemantus, that few things loves better 
Than to abhor himself. Shak., T. of A., i. 1. 
glassfuPt (glas'ful), a. [Irreg. < glass + -ful, 
1.] Glassy; shining like glass. 
All the sting, 
All the vaine fome, of all those snakes that ringes, 
Alinervas glassefull shield can never taint. 
Marston, The Fawne, Epil. 
glassful 2 (glas'ful), , [< glass + -ful, 2.] As 
much as a glass holds. 
"Ale, Squeery?" Inquired the lady. "Certainly," said 
Squeers. . . . "a glassful." 
Dickens, Nicholas Nickleby, vii. 
glass-furnace (glas'fer"nas), n. In glass- 
manuf., a furnace in which the ingredients are 
fused together; in a process in which frit is 
used, the second or refining furnace, in which 
the frit is reheated and made ready for work- 
ing. The regenerative system has been applied to such 
furnaces and gas employed as a fuel. In the Siemens form 
the furnace itself forms a melting- and refining-tank, in 
which the glass is made continuously, without the aid of 
independent glass-pots. See regenerator and furnace. 
glass-gall (glas'gal), n. See anatroii, 1. 
glass-gazing (glas ' ga " zing), a. Addicted to 
viewing one's self in a glass or mirror. 
A ... whoreson, glass-gazing, superserviceable, finical 
rogue. Shak., Lear, ii. 2. 
glass-glazed (glas'glazd), a. Covered with or 
as if with glass.-Glass-glazed -ware, (a) A ce- 
ramic ware whose surface is covered with a glaze of pure 
glass without lead. See glazf. (b) Ware whose glaze has 
definite thickness and forms a vitreous envelop, as dis- 
tinguished from those glazes which have no perceptible 
thickness and seem a mere polishing of the surface. 
