Worcester daily spy. [volume] (Worcester [Mass.]) 1850-1888, 1858-02-10
HOUSE-
Scientific In,eIIirenne.

Prof. Silliman has pronounced the recent
Canada invention for printing bank notes so
that they cannot be photographed entirely
successful. The method is simply the use Of
two permanent and Opaque inks, both of
which are indelible and insoluble. The one
is black carbon ink in which the engrav-
lngs OF bank note are usually printed, and
the other is natural green ink, for tinting
the surface of the note, which is produced
directly from the sesqui. oxide of chromium.
The discovery of light-colore ink, possess
ing the same qualities as the we'll
black ink, whose basis is carbon is certainly
an important event. And if these two inks,
when united on bank note, have no photo
graphic contrast-if they are permanent in
their color, and, as Professor Silliman SAYS,
Interchangeable by anything which the chem
list has at his disposal-then the new method
is certainly one Of decided value. This opin-
ION Will however, be seriously qualified, if
the announcement that colored photographs
have been recently taken in Paris and at Bos-
ton should prove true. The Boston Trans
crtpt testites to the reality of the coored pho.
tosrahs taken by Jesse Harding of Cam.
bridgeport, in which the colors of blue, green
and purple are produced beyond question.
The incrnstations of boilers, which consti.
tutes one of the chief defects of steam en-
gines, is obviated by new eontriyance of a
Mr.. Wissenburn. 1t may be described as
mechanical filter, by which the water before
1t passes into the boiler, is purified of its
salts and foreign particles.
Artificial ear-drums are now made of fine
silver wire with disc of India rubber or gut
ia percha between. They are placed in the
ear and worn without inconvenience, and it
is said the effect is magical
A French disrnvarv f,r .o,do.;,o. ,....J
and cloth ineombustbe was lately tried be-
fore the emperor. Ladies' d1 esses of the
most gauzy material that had been prepared
with It, could not be made to burn. A cot.
tage, one half of which had been covered
with the preparation, was filled with straw
and set on fire. Half the building was con-
suined, but when the flames reached the pro
tected portion, they died away without iniur-
ing it.
new process for Irritating the skins of
animals upon fulled cloth produces a very
beautiful article. The cloths are printed be-
fore they are dressed, and the nap is then
raised and dressed in the usual manner, thus
producing all the delicate shading of the nat.
ural fur.
Mr.. Garcia, Louisiana sugar reiner, has
brought before the academy Of sciences at
Paris, process for clarifying sugar with soap.
The same soap is used over repeatedly, aud
there is said to be less waste of sugar and
more perfect article than by the old methods.
Mr.. Meme, French chemist, has discovered
an application of hydrate of alumina for the
same purpose.
NJ. Regazzali, an Italian, has originated
method of impelling railway trains up steep
ascents. A cylinder having on its circum.
ference two hellces, forming double thread
ed screw, is placed under and parallel to the
axis of the boiler This screw cylinder is set
In motion by the engine, and it geare with
series OF horizontal pulleys placed between
the line of rails, which pulleys act as left-
handed screw, and in this manner the train
is wormed up the incline.
The New Haven Palladium, few DAVIS
since, was printed upon paper mede of ivory
shavings. 1t was pnre and white, but rather
too hard and elastic for printing purposes,
For writing or card paper we would suppose
1t might answer very good purpose. The
Mechanics Journal recommends pure croton
oil as lubricator for machinery it does not
clog from viscidity and is free from acid, while
1t remains in place and requires to be applied
less frequently than other oils.
A machine has been introduced for the man
utacture Of Mimic rifle balls, which will turn
out $4,000 per day. The bars are cut from
boAS Va SN4O lSdds Ing IudCQln6 was invented
by workman in one of the arsenas
Photography is the name of new branch of
art that has recently acquired great devsop-
ment in Paris, 1t consists simply in cutting
out sheets of black paper in such way as to
make it into picture-hgures or landscapes
which has all the finish of an engraving bv
the best masters. 1t appears that psyllo-
graphy is German discovery, its Columbus
being one Herr Schmidt, who, armed with a
pair of scissors and sheet of paper, is able
to reproduce the most complicated landscape,
A member of the academic of sciences of
Paris, who is also an eminent chemist, has
invented an apparatus which he thinks will
enable human beings to breath as freely at
the bottom OF the sea as on the surface of the
earth. lie proposes to form an association
for collecting all the treasures now living at
the bottom of the ocean, and estimates at
about $500, 100000 sterling the harvest Of
treasure to be CLEANED on the route between
England and India only.