New-York tribune., 1874-06-13

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sulphur is melted and then allowing them W cooi'
PREVENTION OF BOILER lSCRUsrAuoN.-Ihe pro-
cess of DIR de Haen consisting in the treatment OIL
the seed water with the proper amount oi pHlo
.l,or,d. and milk of lime, as determined by quant-
-. -. ,,,,s;s seems to grow in favor for locomo-
tive aud stationary engines and is TO DE employeu
Tar the $40 boilers of Krupps steel foundery at Essen
REMOVAL OF THE WooDY TASTE FROM CASKS
. Fill the eask with lime water, and add about
ounce of potash for each bucket of water Allow IL
20 remain for six to eight days, then empty, ana
wash out with clean water. The hqud may pe
used repeatedly, especially If little line anu potash
be added.
SAw-DUsT As FUEI--The expense of forming saw
dust into compact blocks IN which. like turf' tan'
&C. II is best adapted for fuel. leads many 10 De
satisfied with smaller heating results IN burning
them in less solid state. much better efeet
nav however be obtained with them in a loose con-
dition by mixing with them about one-slxth their
weight of mineral coal the high temperature pro-
duced by the combustion of the latter causing
more rapid expulsion OF the % TO ~ per cent OF
moisture present in the sawduSt, as we'll as more
rapid DEVELOPMENT. and more complete combustion
of inlammable gases. For the best effect, however
peculiar CRATE Is necessary.
RENDERING HOSE FOR FIRE ENGINES WATER
TIGHT-Its claimed that hemp or cotton hose for hre
engines may be rendered water-tlght without IN
juring the quality durability. according 10
patent of Kremer of Bavaria. by impregnating the
hose every time after use with a mixture of 100
parts of chemically pure glycerine and parts Of
crystallized carbolic acid, either by drawing the
hose through the liquid, brushing the hquld upon
the hose previously cleansed and dried. and laving
II aside IN this moist condition. The previous dry
ing after use Is not, however absolutely necessary
The effect of The slightly acid liquid on anv brass
fixtures the hose is practically unnotlceable. but
may. If desirable, be prevented by coating them
previously with shellac, yaTnlsh, OF tauow'
INFIUENCE OF FooD ON THE MILK Production
OF GOATs.-Our late journals bring accounts of the
continuation of the experiments performed under
the direction OF StOhmann at the experiment station
at Hab in Germany, on the influence of the food
upon the milk production of goats. The results are,
in the main in accordance with those of previous
experiments. The composition Of the organic sub
stance IF the mix was net essentially altered by
changes in the composition of the food. The milk
production was influenced by the amount of water
consumed This observation which is in accord
ance with agricultural experience shows the differ
ence between the fattening and milk-producing
processes" THE amount OF milk production Is de-
pendent upon the individual pecuhantles OF the an
imal and upon the duration OF period OF lactauon'
The very interesting observation was also made
that the decrease IN the amount OF milk during the
period uf lactatiOu may be- TO considerable extent,
prevented by increase IN the amount Of albu-
menOIds III the fodder.
OH PROM SHARKS LIvERs.-The preparation of
oil from the livers Of sharks rays saw-fsh &c. is
conducted on a large scale on various portions of
the seacoast of India For this purpose the fish
usually taken III October and November, the livers
being then in their best condition. Although the
quality does not vary with the season. the amount is
about three times great in Autumn as IN Spring.
The most esteemed iivers are firm and rose color
while those which are whtisb and fabby are re-
iected
The first operation consists in removing the gall
bladders, when the hvers slashed IL various
places and washed 20 remove the blood. They are
then placed in a large earthen vessel with enough
water TO cover them. are heated for fifteen
twenty inmates. and then allowed 20 cool. The
oil which floats the surface is gathered IN ladies'
and poured into glazed earthen jars; 1t is next
nassed through sieve and all which does not pass
through is thrown away. Three or tour DAYS later
II is again filtered through thick stralner to sepa
rate the deposit OF Stearn, tins operation belng re
peated three OF four intervals Of twenty 10
twenty five DAYS. The oil then remains clear, OF
6ne straw color smelling very much ike cOd-liver
nii An inferior qualicv of oil is made by simply
heating the livers. without previously washing or
picking them. The better quality OF TINS OH is Used
medical purposes lAat O1 INC sAau 4s slnl4aIlS
employed III CHINA.
NEw METHOD OF MAKING PAPER PUIP.-Mr.
Keepan's new process for the manufacture Of paper
liqneous fibers BY means of alkali SOFT wood,
as for instance pine. Is first cut into little tablets
from six to twelve inches long and half an inch
thick. Uniformity OF size is desirable, as insuIlng
Uniform rapdty of action upon the different pieces.
These tablets placed III cylindrical vessel
mounted a horizontal axis, winch reyOlves
slowly during the operation. solution OF caustlc
soda of about 20 is next admitted 10 the wood, the
vessel Is Theoretically sealed, and then by means of
"a powerful pump the liquid Is completely injected
into every pore. A pressure OF about 90 pounds 10
the square inch for half hour is sufficient for this
part of the process. After the wood has become
completely saturated with the caustic the Of
the latter is pumped away, 10 be used over again.
The vessel in which this operation has been carried
on is provided with double envelope. so that be-
tween ITS walls steam can be introduced The wood
ls thus heated up 10 nearly 300 Fahrenheit fm TWO
hOuIs. at the eud Of which time It's hbers can be
easily separated by washing. This washing IS con-
tipued until the escaping wash-water is perfectly
limpid. A semi-pulp Is the result OF tins process,
aud be easily converted by ordinary means into
a pulp suitable for the manufacture OF paper.
Bleaching may be performed either before or after
this conversion, according TO the color quality OF
paper 20 be produced. In me enuTe process but
LttIe soda is really consumed but little time Is
wasted, and the woody fbers are completely freed
from all reslnous substances
INFECTION OF SOUND POTATOES BY DISEASED
oSRs-Mr Worthington Smith has lately presented
the results of sundry experiments, made with view
To ascertain how far perfectly sound potatoes are
likely TO be contaminated by injected ones. For
this object be secured in the Autumq of 1872, sam
ples of different kinds of potatoes regarded pos
sessipe certain disease-ressting qualities From
these he selected samples in different stages OF dis
ease previous 10 planting and tested two supposed
cures. uamely-frst busting the cut surfaces with
sulphur; and second. dipping the potatoes in a So
luton in water of pure carbOhc acid and gycerine.