New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1860-05-26

SALT or gum, and this retains trace of the suphuret
Of carbon; and any amount of concentration can De
gwen To the Notwithstanding TO the relative pro-
portions Of the absorbent aud of the spice employed.
In treang Of garlic onions and such vegetables The
juice expressed by hydraulic pressure lie mixed with
she suphuret of carbon which dsscives It's active Pn-
eipie.
At the Exhibition at Rouen many of these prepare
lions were especially noticed by the Committees and
were used at the restaurant OF the palace Of tne eXh
bition.
So.Ps-Great improvements have been made in the
manufacture of soaps and cleansing preparations by
she processes Of Mrs. Rowland of Golden square Lon
don. These depend chiefly upon the introduction of
certain chemical compounds into ordinary soaps, by
which their deterive properties greatly increased
The soap being dissolved in warm wafer, ammonia OF
anmoniacal compound is added to the solution,
together with some liquid hydrocarbons, equiva-
lent substance, as spirits Of tupentiDe coal tar naph
ths, eamphene, benzule, some Of the similar com
pounds derived from the distlaicn Of bitumnous mat;
ters. The proportions Of the mixtures determined
by the nature Of the soap and the required. On
sccoaut Of The volatility of the cubs ances added much
heat is avoided in mixing 1t is well TO add some flour,
dextrine, or some gelanous muclagnoas substance
which is soluble in water; it serves vehicle for
substances III suspension OF lcCi.nl'
cal comb aion. Perfumes or essential oils intro
duced disgue tie odor of the chemical ingredients.
The following is more particular description of
one Of the processes Six pounds Of soap dissolved
in two pounds Of warm water. To the same quantity
Of water are added about 3, ounces of -four or starch
oexirine, oatmeal other such substancege latne
glue, or other eelatinous mueilaginous substance
may be employed which viii give body to the compo
~. u. i
ls prepared by boiling aud added while hot to the
solution of soap, and the whole is thus heated ane
srred till the Ingredients thoroughly incorporated
together 1t is now taken off the ire and the stirring
is continued till the temperature has fallen TO about
1907 when about fourteen Of spirits Of turpcn
tine naphtha eampbene, benzule, other su,h sub
stunce is added together with equal quantity Of a
saturated solution of carbonate Of ammonia. Tue mix
tire should again be- thoroughly stirred, and then
tured into suitable vessels AND he1nettaly sealed To
the carbonate Of ammonia II may be well % add one
eighth ts'weigh Of The liquid caustic ammonia Of
the Pbarnmcopeias.
AT the March meeting Of the Royal Institution,
Professor Faraday read paper the of the cleo
tric light fo lighthouse Illumination lie says that
the great value Of the electric light for lighthouse pur
poses consists in it, intensity. So much light is gained
by IL in very small space that only small optical ap-
paratus is needed converge the light and throw all
into the required direction. In order 10 obtain
equal amount Of light from oAame the size of the
flame must be two thousand times large that OF
the electric light and the apparatus must be very much
larger An electric light has been used in the South
F0reand high light for six months past 1t is obtained
froa magnetic electricity which supplied from mag
netic wheels driven by two two-horse-power engines.
The whole cost beyond the and tear is that Of the
coke and water required raise steam for the engines
and carbonpoints for the lamp in the lantern The
pertinent has been successful one; The light has shonc
up and down the Channel and into France with
power far surprising that Of any other fixed light IN
existence.
M Nontignv in a note addressed 10 the Academy
Of Belgium questions the rate at which sound travels
laid down in the books lie states that in storm in
September last be, while at distance Of three miles
from where the lightning struck could count but two
seconds between the lightning and the thunder Had
tie rate Of travel Of the sound been more than lOD
feet PER second as generally supposed there would
have been an interval Of fifteen seconds. Another
gentleman, situated at nearly similar distance IN an
other direction from the place struck by the Lightning
could perceive no greater interval than NJ. Montigny
Many other facts noted BY NJ. Montigny, al tend
ing 10 prove that the rate al which the sound Of thun
der travels is much greater than 100 feet per second
In the meeting Of the British Association for the Ad
vanoement Of Science Of 1853 it was shown that the
sound Of cannon travels faster than the sound Of the
human voice.
M Delaunay is engaged in preparing set Of Ia
bles Of the moons motions, which are IN process Of
publication by tie Academy Of Sciences. NJ. lie Yer
rer objected to them that they incorrect,-that
bis theory Of the moons motion did not concur with
tie observations. NJ Deaunay replied with much
acrimony and pretty quarrel ensued which for sew
era weeks crowded tire s6aaees Of the Academy.
When NJ. lie verrer : lsst reply was finished in the
sfanoe Of March 18th, the greater portion OF the audi
enoe left the hall NJ Dumas, the great chemist, is
said TO have remarked with much bitterness: did
not know that there were many astronomers in
Paris"
M. Guillemin has made an apparatus by which the
time Of transmission Of electric currents be measur
ed 20 the forteth Of a second With II he has found
thst with certain battery the current travels from
Paris 10 Mans and back some 800 miles filling the
wires with electricity 10 their utmost capacity, in
tweuty-one huudredths Of a second; by TRIPPING the
force Of tie battery be reduced the time 70 eighteen
hundreaths Of q second This is not the time Of TIE
transmission Of intelligence which is far less, but the
time which requires get up the maximum tension
Of electricity in the wires aferthey connected with
tie battery.
Spain is not idle in astronomy The Royal Obser-
yatory al Madrid under the direction of Don Aguilar
Vela has two astronomers, with two ASSISTANTS us
principal instruments theodolie Of Repsold, sex