New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1873-09-22
APPLIED SCIENCE.

CASING FOR STEAM BOILERS, PIPES, &C.-The fol-
lowing composition has been patented in England
for easing steam pipes, &c: Potters clay, ls c"'''
Rawdust "a pounds; fine shavings, l2 pounds; COWS
hair % pounds; tar, Is pounds; water-glass TSP e
In, rs pounds; creasote 8 pints Another 1ornuia
consists of clay, Il cwt cork dust - ponu5i, OK
hair, pounds; tar, 10 pounds; Wa'e. En1dS,
pounds; chalk, 10 pounds; coarse soap P'unu0'
sTeasOte, pInts.
Explosive PAPER CARTRIDGEs-Paper prepared
in the following way explodes without fonness ana
only on contact with fire. and is said to be ~ per
cent cheaper than gunpowder' ADD toeether 20
parts of water 9of chlorae OF potash ~ OF hllrate
of potash 8! Of yellow prussate OF potash 81 Oh
finely pulyerized charcoal l-2l of part OF starch
and l16of part of chromate of potash; str well.
and boil for an hour. Soak paper cuttings IN tiIs
honld and dry them and make INTO cartridges III
tubes of proper size formed from sneets OF paper
saturated with the liquid. and dried at l6' Proect
the cartridges from moisture py Solu'lVh Va
ayl0idin III acetlc aeid.
GAS MANUFACTURE BY EYELEIGHs PROCESS
Fxhaustiye experiments have been made by PROBES
sors Odiing and Keates, with this process which
consists in dstilling the coal at low temperature,
and redstilng the tar obtained thus 1t is claimed
obtaining more and better gas from given weight
of coal They found no better Quantitatlve but
better qualitative production by the process with
entire absence however Of the tar as an accessory
product. More fuel was also required than Dy the
ordinary process and since the gas is gwen OIL more
slowly the outlay of capital in the works. as well as
the running expenses, must be greater and the IN
crease in quality is Offset TO these increased eX-
Psnses.
SEBOR's METHOD OF OBTAINING SUGAR FROM Mo
LAssEs-This method, patented by Sebor for the eX-
traction of sugar from bee-ToOt molasses consists
essentially IN separating the sugar IN combination
with lime, and then employing the sugar-lime so
d,fp irnnlo limo for spO1ratlOQ and
saturation of the juice; the sugar of the molasses
being in this way, in a great measure, returned to
the luice and obtained by the subsequent treat
nent In addition, the alkalies and other mineral
Ingredients and organic matter, that do not pass
INTO the sugar-lIme may be obtained as fertilizers
1t has been thoroughly tried in the Concordia manu-
factory at Brieg and that at SwOjschtz, and details
Of the results in both given IN the journals
Of Sugar Industry of Prague for 1877 and lo'3 ana
the conclusions from them summed up by the editor
Of that Journal about as follows: l. The process
rs simple, demands no very expensive machinery,
aud but little ROOM @ The results, in the various
manufactures show it TO be practicable. g. The
sugar-me is very properly used for the separation
and saturation of the Juice Qeavng nothing to he
desiredi aud by proper care the juice obtained Is
purer than that by usual saturatiOn with me whiIe
the time required for saturatioD, contrary to the
fears of MANY is the same. 4. The Swojschitz man
ufactorv produces exclusively a white article; and
most exhaustive investigations were made as To-
whether the continuous operation OF the process had
any injurious effect upon the quaty OF the juice or
the syrup filled into the mods or the whtehess Vi
the product, or whether more spodlum or GARNER
were needed and conclusions on all points taVOTa-
bic 20 the process established 1t was espeGlay
decided by experts that there was not the shghteSt
difference in the sugar made in the same time, with
and without sugaI-lime, although the same quantity
of spodium was used for filtration and OF hquor Or
bleaching the quality of the beets and other con-
Sitiong being Identical D. The SwOlschltZ manufac-
tory affords Trustworthy data for calculating expen
dturos necessary per hundred weight OF lnOlaSses.
q Where fuel is costly the minimum product of 23-4
per cent Of the sugar Is the limit OF ploht, but
where fuel is cheap 1t viii be found pr0ntable 10
employ the most complete process, which AFFORDS "a
return Of 30 per cent OF sugar. lne process is Oh the
highest importance TO the agricultural interests,
since il preserves for the soil the potash salts, so
valuable fertilizers especially IN their effect hpon
the amount of sugar IN the Juce OF the beet; ana
also the organic matters beside sugar, an Oh Whlch
are otherwise carried away with the molasstS when
sold A well known manufacturer stated that the
increase in quantity Of beets and polarization OF
iuise, bv use of this manure, would OF ltseu DC
sufficient profit from the process
Dyr1NG FrArHERs.-Feathers color almost pre-
eisely like silk but special must be taken TO
free them from fatty matter, and also that they
retain their form and briliancy. For this reason,
I've or any caustic material cannot be employed to
remove the grease but carbonate of ammonia OF at
most very diluted solutions of soda, may be used.
The feathers must be carefully laid in the bath,
without breaking OF bending and kept in constant
motion whilst driving, after being dyed so that the
down NAV stand out and the natural form he re-
stored Black is the most important color and at
the same time the most difficult 10 produce. The
following processes leach for half "A pound Of
feathersl according to ReimaRnS Journal, give most
excellent results !. Black: Prepare bath Of one
hound calcined carbonate Of soda in 30 quarts of
wafer M temperature Of 100. Rub the
shafts Of the feathers with a piece of earbO-
nate of ammonia, and place the feathers quarter
of an hour III the soda solution instead of it, in
q solution of twice the amount of carbonate OF am
uonia over night Rinse them with warm water
oil removal from this bath, and lay them for or
hours in bath Of nitrate of iron, Of . b.; remove,
rinse with cold water, and work them in "A luke
warm bath Of a decOcton Of pounds logwOod and
pounds quercitron, heating il gradually, but not
allowing it TO boil, and let them remain in il until
they are perfectly black then remove, aud rinse
with lukewarm water. Dissolve ounces Of potash
In quarts Of water, and stir pound of oil into the
solution. until II is completely disseminated. Pass
the feathers singy through this bath. allow them 10
drain without squeezing them, and keeping them IN
motion until dry by fastening their shafts to long
cord stretched in weheated drying room, num-
Der of such cords being kept in motion. by connect
ing them with one at right angles. which can I've
recover their natural luster If but few treated,
they NAV be dried by holding slngly IN the hand,
aud moving before fire. Many dyers dispense
with the oil bath by placing the feathers, after dry
ing and Tnsing leuQthwlse ia layers IN box, pow
dering each layer with gypsum. removing them
while moist. and swinging them dry; the last poI-
sions of gypsum being removed with soft brush:
The shafts are then polished, and the veins curled
with suitably shaped hot irons . AnOtker Black
The feathers cleaned in the previous case and
laid from TO hours IN q bath prepared by boiling