Burlington tri-weekly hawk-eye. [volume] (Burlington [Iowa]) 1852-1855, 1855-02-10
ART, SCIENCE AND MECHANICS.


new stone water filter has been ntrodu-
ced in Boston, which is said to possess great
value. The fltering chamber is large, and
filled with charcoal and quartz sand, and the
water chamber sufficiently large for the con-
venient supply of a large quantity of water
for family. Smoky rain water has been
passed through it, and the Cochituate water
when it was the most disagreeable, and both
were rendered pure and tasteless. 1t is Of
American construction, and has been pro-
nounced by several eminent chemists, who
have tested it, the best filter in use.
NJ. Delande, Of Paris, has brought forward
an invention, which consists in certain pro-
cesses for producing a new metallic alloy,
similar to silver in appearance. and intended
to supersede it in various applications. Tin
forms the base of the composition and to
pare it, the inventor calcnes i. two or
three times with saltpetre, and reduces the
caiu:ncd part to powder, which is melted
down with q crucihle. When in a fluid state
it is purified by being mixed with charcoal
powder, the clear part being drawn Oft into
another crucible ready for use.
The strength of corrugated sheets of thin
iron was admirably exhibited at the Crystal
Palace, in this city, last year. Two sheets
of the same metal were rested at the ends
on blocks foot high; enc sheet was smooth
but the other was CORFU ted or wrinkled,
as if it had been laid upon the side Of wood
en- house, and ronnded until it fitted closely
% the claI boards. The first sheet, with on
" its own weight, hung down until its mid
die touched the floor, while the other with
COL pounds Of iron on it, did not bend a
hairs breadth, land felt under the pressure of
the spectators bodv, just like a block Of
granite. Corrugated metal is much used in
the West Indies.
Papier- mache is the name given to articles
manufactured Of the pulp Of parer, or of
old paper ground up into pulp, bleached if
necessary, ard moulded into various forms.
This article has lately been used upon an
extensive scale for the manufacture of moul-
dings rozettes and other architectural ornl-
ments; pilasters, capitols,. and even feures
as large as life, have been made Of it. 1t is
lighter more durable, and less brittle and Ii
able to danger, than plaster, and admits Of
being colored, guilt or otherwise ornament
ed. Another article goes under the same
name which is more like PASTE board, con-
sisting of sheets of paper pasted or glued,
and powerfully put together, so rs to &C
quire when dry the hardness Of board,
and yet to admit, while moist of curvature
and Texture.
By far the largest proportion Of all the
matches made in this country are known as
split matches-bits of wood split off by ma
chinery, from suitable block. After the
splitting, the pieces require to have their
ends furnished with the Illuminating COM
pound, which is done by dipping them into a
vessel containing the mixture in a liquid
form. In the dipping process, the end Of
each match which enters the mixture, must
be held separate from the others, otherwise
the dipped ends would stick together and
rem Ter it impossible to seperate them af-
without ignition. In order to hold |
the matches properly during the dipping pro-
cess, dipping board is commonly made use
Of. 1t 10 q thin plane board, having its sur
face perforated with small holes, arranged
1T suitable intervals apart, into witch the
matches are stuck by hand. The operator
.akes the board, dips the ends of the project
ing matches into mixture, coating them sim
At Coperas Hill, STAFFORD, VT, there is
annually manufactured three million pounds !
If Operas, Thirty men are employed in
making copsras, and twenty in raising the
copper ore.