The daily gazette., 1875-06-07
From the N. 7. World, Of Saturday. -
NO MORE BROKEN CLANS.

NJ. DE LABAsTIE's scovERy-ExPERI-
MENTs WITH THE ToueHENEp GLASS.
The ancient admonition to occupants
of glass houses is in danger of losing
its force. III. A. de Ia Bastie, a French
man, has already succeeded in making
the demolition of that hitherto fragile
substance matter of no small difficult
ty. When saucers, plates and glass
dishes of every description, not TO
mention watch crystals and large plates
OF window-glass, are thrown about q
room in a miscellaneous manner, with
greater damage to the floor than to the
missiles, the inquiry. Cannot glass be
made practically unbreakables be-
comes one of inteest.
EXPERIMENTS WITH THE GLASS.
AS preliminary, Of the Professor
threw a few pieces of red glass, OF
considerable thickness, about the
room, which only excited smile from
the many glass.dealers present; next
saucers and various other glass dishes
of moro fragile Dimensions bounded
unbroken from the hard floor, and the
smiles pcrceptibly dwindled; and
when, in handfuls, watch crystals and
long thin pieces of glass fell on the
floor and remained whole, round of
applause broke from all present.
The next experiment consisted OF
testing the strength of ordinary and
this patent glass beneath steel weight
cartridge-shaped and tempered, drop
ped from different heights. Best Eng
lish plate glass was broke beneath
two ounce ball falling 10 inches, while
the La Bastie glass OF. an equal thick
ness was only broken by the same ball
falling feet 8 inches. Ordinary plate
glass was broken by a A ounce ball
dropped from height of foot while
the tempered glass resisted the blows
of the weight until it had been raised
to 3 feet inches. A pound weight
required to be raised 8 feet to break o
piece of this wonderful glass / of an
inch thick. To demonstrate the ad.
vantage of using this substance in roofs
of hothouses, a plate was placed in a
slanting position and 2 ounce ball
allowed to fall upon it perpendicular
ly, as hail stones strike upon slanting
roofs, and it was not until the ball fell
from height of 9 feet and had struck
the same spot thirty six times that 1t
was broken, while common glass of
twice the thickness was demolished at
4 feet. Another experiment consisted
in allowing strip of the glass inches
wide and 3-16 of an inch thick to pro-
ject from wise 8 inches and placing
weights upon the projecting end. In
this position it supported 40 pounds,
ordinary glass of the same dimensions
sustained but 161 pounds.
A strip of the patent glass 10 inches
in length, 3 inchis wide and 8.18 of an
inch thick, was bridged upon two up
rights and weights suspended from ii
in the centre. One hundred and eighty
pounds were thus suspended, when the
glass still remaining uhbroken, with
no signs of it giving way, and there
being no more weights on hand, the
experiment had to be abandoned.
Many similar experiments were tried,
all with great success. Glass dishes
were heated and cooled without inju-
ry, and one plate was exhibited which
Professor EgleStSp said had remained
upon the range in his house, subject
10 every change of temperature, for
over a week. The Professor also
vouchcd for having heated large
plate of the material In the centre to
two thousand degrees and still held it
comfortably by the edges in his bare
hands.