The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1856-02-10


grlse. and kept separate from those stocked with
salmon ova. It 70 said TO be the intention Of the
perintendent TO impreguAte the ova of q salmon or
grise from the met taken from one Of the pars In
the pond, many OF which at present full Of melt
A London architect has discovered Q simple pro-
cess by which beautiful eject may be produced in
stained glass, for ecclesiastical purposes at very
moderate expense BY union Of two pieces Of flushed
glass, having different patterns and different colors
. design 10 produced of great beauty Of form, rich
ness Of color and possessing sparkling brilliancy
which Is almost unrivalled in any other variety Of
glass. The process is unique and beautiful one.
The horizontal single cylinder engine L. gaining
ground In Europe on the double cylinder vertical
engine. At one time the great objection to hori-
z0nal engines the excessive unequal wear Of the
piston upon the lower side of the cylinder; but owing
to the accuracy with which pistons are now made,
the wear and tear upon cylinders ia greatly re-
duced. In France, the consumption Of coal per
horse power, in the most common steam engines,
is very low--only about three pounds, and the
makers OF them guarantee that they will not exceed
that amount. The steam is used at about SO lbs.
pressure the square inch and is cut off oneith
Of the stroke and so far as economy of fuel goes,
they are equal to an engine with two cylinders, the
one for high pressure and the other for expansion
the well known Wolfe principle.
Gun cotton is now extensively used in blasting
rocks The objections to its more general the
inequality Of its action compared with gunpowder;
the effect on the gun ID greater; its proecte force
varies with the compression of it in the gun 1t at
tracts more moisture alters slowly from loss of acid
and expiodes under some circumstances at l54 de-
grees Fahrenheit.
At the Boston locomotive establishment, twenty
two ton passenger locomotive is building as an ex-
pertinent. In the g. neraton ofsteam in the engine,
coils of pipes placed one upon the top of the
other, which contains the water, and upon which
pipes the fire is directly brought 1t is intended to
burn coal and it is thought steam can be made in
ten or twelve minutes from the time OF kindling the
fire. Another novelty is that the engineer placed
ahead of the smoke pipe. The fireman is to be placed
behind the boiler.
patent car brake, involving some new improve
ments designed to meet long felt desideratum has
been invented by Mr. Paul Moody. 1t consists Of an
additional steam chest on the locomotive, inside of
cylinders, and connected with this piston is the ma
chnery for "brakeing" the train. The machinery is
merely movable arm or lever, which con.
meets with another lever, and that with another,
These levers are connected with the brakes
and perform the operation of checking and stop
ping the cars simply by the hand of the engineer
applied to spring or valve. A.. ~.
Adams & Gee, printers, of London, have found that
metallic plates, of the thickness Of ordinary sheet
tin, may be printed upon with the usual printing
types If the plates be first coated with compost
printed upon be afterwards subje tied to q GER
tain japanning process an even lnstrous
surface is produced, which cannot be acted
upon except by q sharp, steel instrument. 1t
uuy VIC hppilcu LII any luStdHCc WucIc pIlutcO
matter is either to be exhibited, even handled,
for any length Of time, and may be advantageously
substituted for the hitherto mounted lessons. How
ever soiled copy Of the metal print may become
by exposure to dust of every kind it can be clean
ed and washed, even without being taken of.
NJ Barrere, of Paris, has exhibited craving ma
chine by which medals, canoes any other re-
!eved surfaces may be reproduced. medal. for
instance is placed fiat on metal disk, to which It
is firmly attached, and metal pencil the size of an
ordinary crayon, and very sharp at the end so as to
trace line no larger than the finest hair Is brought
down upon it's centre. The sheet Of ivory or metal
which is to serve the basis of the copy is placed
on another disk, upon which is brought down sim-
liar pencil furnished with the sharpest possible
diamond point The medal and the copy-plate being
are connected by q rod, are set in move
ment by the machinery OF this very ingenious
invention, and which may be worked by hand or
steam at pleasure. The reproductions are perfect
facsimies Of the original, and Of great decacy and
beauty.