The Washburn leader. [volume] (Washburn, McLean County, N.D.) 1890-1986, 1897-01-30
SUBSTITUTES FOR GLASS.

rAree Compositions Coming IF. Use In
Europe. M ss5!.
There ore se1Sral substituted Tor glaai,
in use in Germany, the CHIEF among
them being tectorium. fensterpappe and
hornRlns. Tectorium consists1bf gal.
vanized iron web covered with gelat.
inous substance and is translucent. but
not transparent. It is described 40 q
substance that can be bent without be.
ing broken and is both tough aud dexi-
BILE. 1t is said not to be softened by the
rays of the sun, is nonsoluble, and is
not affected by severe cold. It is poor
conductor of hoat and is we'll adapted
for roofs OH account of its extreme light
ness.
When exposed to the sun, it leses ito
original yellowish color in time and be.
comes harder and more durable. One
advantage is that it can be easily re-
paired in case it is cut, does not break
aud is we'll adapted for factory windows
and skylights for hothouses, market
halls, verandas, transportable buildings
and for roofing.
For ordinary hotbeds and forcing
houses. such as are used by most florists
and market gardeners. there is another
aud cheaper substitute for glass in the
50 called fensterpappe. which is q tough.
strong MANILA paper, that may be
stretched on large sasl,cs or frames and
saturated by painting the exposed sur
face with boiled linseed oil until it be-
comes translucent ,.,and impervi6us to
water. Light wooden frames. 40 inches
in width, and of any desired length, are
provided and covered with the paper,
which is fastened BY mailing Of the
edges aud then painted with ordinary
boiled linseed oil until the paper is so
saturated that the last coat Of oil forms
a smooth, gllstening surface. like var
nish. As soon as dry the frame is ready
for use. It admits sufficient light for
growing plants, does not require to be
shaded in hot sunshine, is light, dur
able. secure against breakage by hail or
ordinary accident, and, taking every.
thing into account, is said to be about
100 times cheaper than glass. It is
largely used by florists aud market gar
deners in the district Of Frankfort, and
their general verdict is strongly in its
favor, although for handsome conserva-
tories. skyliRhts, ETC., it possesses less
durability and none Of the neatness and
elegance Of tectorium.
Finally. there is new product, called
hornRlas. which has been recently pat.
ented and placed on the German market.
HornRlas resembles tectorium in appear
ance. with tine difference that it is thin.
ner, and consequently lighter in weight.
and the insoluble gelatin with which
the wire gauze is covered is whittier aud
more nearly transparent than tectorium,
although it may be colored red, green,
blue or any other tint that may be de.
sired for special purposes. It is manu-
featured in two qualities, one being of
heavier wire and with larger meshes
shan the other. The special advantage
claimed for hornglas is that it does not
soften under sun heat and is therefore
adapted to use in any climate without
he danger Of becoming SO soft and ad-
aesive Us to retain dust and dirt. Its
1ses and general characteristics are slm-
liar to those Of tectoxium. Louis
Globe. Democrat. :. -