The Red Cloud chief., 1880-12-30
NIrRo.GLYCERIsR,

Doo8cg0os AxRsossNob
ABOUT one hundred yards beyond
the VI sthe Hoosae Tunnel is
s,ssss1@iZ,ssaisffSosSsss @ IN!
noul D~glycerine Works!
~ Okfors admitted" A
between two rows of
brings the visitor TO the
Be. q well ventilated building,
long. Here are eleven stills,
en- feet long and two feet in
Under these a light, slow fire
ich is carefully attended to,
.1of the fcinperatpre must be kept mod
crate. In each Of these stills is placed
q charge of nitrate of soda and of sui
phuric acid. A stoneware pipe con-
ducts the gases, at "a temperature of
ab0uts $50. degrees Fahrenheit, from
each still into q stone Her or con-
denser, or rather a seri.A four con-
densers connected by stonetAN pipes.
ranged on q platform three feet above
the ground. Into three Of these sui.
phuric acid is poured, and tho fourth is
empty. The nitrous vapor passes from
q still to the first condenser, where .
portion of it, forming. as It condensesy
widsffc IS taken Hp BY tbe snsFndfIc
acid; the 33.ihder passes on to the
second, third and fourth condensers.
though q very small portion is left TO
pass into the last, which only requires
to be emptied once q month.
1t takes about twenty-four hours for
the still to complete the conversion of
its contents into nitric acid. at the end
of which time the resultant mixture.
about six hundred pounds. is run off
into carboys, twelve of these being filed
from three stills. .Kbout one hundred
carboys are generally kept in stock, as
the acid does. not spoil when kept
closed. These cSrboys are then emp
tied into q soaprstone tank having a
capacity of eighteen carbcys, and an
iron pipe, connected with the main
leading from thahlowers, in the engine
red intothe acid, .cansing
H".r~ent of air 80 agis~AT@s as to
: coara the nitrous fumes mhSt thor
rellU and bring it all = MORN
ougna.h Formerly this was 2SSAed
s.re raHoying the acid into q gls vessel
edntarTTno NsJhasrfryr 1iions, and it
required boiling for hours The mode
now practiced occupies only five min
utes, and the risk of fracture of a glass
Vessel in a sand-bathi is avoided. The
cid is then carried into a converting
BON, about one hundred feet long and
kell-lighted. where it is divided among
ne hundred and sixteen stone pitchers,
Rr-snged in nine wooden troughs placed
N the center and at the end of the
rpan. andHhese troughs are now filled
ice-celd water or ice and salt, so
30 within -four inches of the
IN shelves above the
gfTss- Jars. one to
q Into each of these
tpure glycerine is
means of a siphon.
& attached about two
pp by drop. into the
cher of mixed sui
cids. Immediately
Ehich the glycerine
d one-fourth inch
ngs a current OF
ceivers connected
above mentioned.
distributed to each
and glycerine are
r pipe, to which is
tube sixteen inches
one fourth-inc bore.
Jour and half or two
eglycerine takes to run Of
the pitchers, the greatest care and
est attention is requisite. The three
mn whose duty it is to attend to the
mixing process have each q row of pitch
Su~BtolMxfch. walking the whole time
up md down beside them, with Their
mQmeter in haAd, and, as the nitrous
rise Sfrcm the forming nitro
Find- then str the mixture with
fE0Isass lube before mentioned, in a
pitcher that may be giving out too
rio(&ntk furnns. Sometimes this is
e24std by the glycerine running 8
!,Ae freely, which fires the mix
.r65nSes the glycerine, forming
] [, and develops unpleasant
In such a case, by pushing
lbStk 8 little wooden peg in the glass
jar the flow of glycerine is lessened,
kapdJAx stirring with the glass tube the
zftFess Tapors are dispelled. Should
ne et8ine stop working by any unfore-
een circumstance, the current of air
ylll Of course, be stonped, when the
mixture win take fire. In this ease it is
Necessary to stir the mixture, and at
unce step the flow nj giroerine. i
EWhenfhegfycerine and acid are oil
Ss0dthe nitrous fumes cease to
k2ehe snllro-glycerine from each
dumped jlto-a large tapk of
afePperat6re Of 20 degrees,
punds Of uitro-glycerine
fine sinks to
about six
ius for fif-
eequently
s.. This
ar Tn q