The weekly democratic statesman. [volume] (Austin, Tex.) 1871-1883, 1877-03-22

Each one is intended to receive q chi
ney fresh from the furnace.
As the chimney falls from thu IN
rod into the oil great flame goes
from the ignited fat, the chimney
ing so much hotter than the oil. III
however, is only instantaneous.
dies away, leaving the Chimney inv
BILE in the blackened contents of
bath. When chimney has been pla<
in each of the high saucepan-like
sells, all are left quietly in the mel
tsllow some fifteen or twenty minus
and are then taken out by the mum
Gus small boys who hover about
little fire demons, to be by them
veyed to the boiling and washing rod
When they are thus removed 81
the bath, after haying been trea,
with the hot oil, the chimneys look,
though they were made of So
percha. They are completely Coz
with a thick, brown, fatty substaii
This is cleaned of, first by boil
them, and subsequently by hand-ws
ing. The process of toughenini
then complete.
The comparative cost of glass VIII
has been subjected to the La Ba
treatment was stated To be about n
per cent. higher than that of ordin
glass. The comparative toughp
and durability were illustrated by
written statements of two of our 9
railroad companies, exhibited by
manager, that since they had used
toughened lamp chimneys they lost
one by breakage, where they
formerly lost eight and ten respd
lively. Further illustrations wd
given by practical experiments in {
presence of the visitors. Eight Of IN
toughened chimneys were placed owe
burners and allowed to become very
hot. An attendant stood by with
pail of cold water and brush, and
showered the chimneys with the water|
Only one broke under this severe test.
He did succeed in breaking another,
but not until he took it off the gas and
plunged it hot into the cold water. Ths
rest stood firm through all the shove
A more striking experiment was per
formed by the foreman, who, with one
of the chimneys as hammer, drove
sixpenny nail its whole length into /
thick plank. 1t was repeated by on,
of the visitors, who dou1te what h
saw until he had done the same thinl
himself. As yet Mr.. de Ia Chapellt
has made nothing but chimneys Of
various sorts on large scale; but b,
ls testing the applicability of the pro
cess to other objects, such as plates oil
different sizes, saucers, bowls and win
dow glass, with view to their eco
nomical production. Specimens OF
these were shown in mis- storeroom.
Thin and delicate plates were allowed
to fall to the floor, and even violently
hurled upon it from the height Of :
mans head without breaking; a fay
of ten feet or more on hard brick
failed to fracture some little glass but.
ter plates whitened with cryolite, so as
to look like ordinary chinaware; and
the severe shocks sustained by the
panes Of ground glass which were ex
hibited, suggested the value OF this
glass for covering green houses. No
ball could break it.
The La Bastie process is protected
by several patents. The nature Of the
change it effects in the glass is not
thoroughly understood-unless, in
deed, by the inventor and a few highly
trained experts. One curious fact was
mentioned by the foreman OF the
Brooklyn works that the fragments
of the toughened glass have not the
sharpened edges of ordinary glass
when broken, and are much less likely
to inflict bad cuts. -NeD York Sun. 4,