New-York tribune., 1910-10-09

bI1-7 ned o \
only with much rapdity, and this acton IS tech
ncalv termed explosion The heat at the surface con
verts the body under the fame into gases so that as
fast as the solid is disspated into gas the oxygen car
RED in the material combines with the cOmbustbIe ee-
ents thus evolving still more heat which maintains
the action until the body is entirely consumed
How 1t Is Mad.
ULTIMATELY, as the nature OF this acton became
~ understood after much experimenting, chemists
able to render nltrogycer1n bit more docle al
though even vet it IS far from being stOd dependable
creature Purity of the compound has been secured at
last. and some measure of stability.
In the present method of manufacture, charge OF
seventv-ve hundred pounds OF mixed nitric and sui
rric acids one part nitric to seven parts suphuc, IS
run into steel tank which IS provided with vertical
rotating shaft armed with paddles for rapid stirring OF
the acids when glycern is admitted. The tank IS
equipped with coils also, through which cold water IS
circulated for the purpose OF maintaining low tenn
pcrature. In order to keep down the neat developer
bv reaction, the temperature must be held between
twenty and twenty-five degrees Centgrade (5Xty-elght
and seventyseven degrees Fahrenhe1t Ih1s IS regu,
lated bv the amount Of glycerin injected into the mixed
acids and bv the efficacy of the cooling device The
glvcern IS allowed into the acids IN continuous
stream while the acids are constantly a8Itatcu very
gently. The quantity OF glycern should De fourteen
and oneha per cent of the total weight OF ACIDS used
When all the gvCerin has been run IN, the charge IS
drawn off into separating tank where the niLIogCcr
rises to the top, while the acids are drawn OH 70 DC re
covered and the nitrOgycern conducted INTO drowning
and washing tanks One pound OF sweet gycern should
Weld nearly two and quarter pounds OF nItrogycern
Despite all advances IN the art OF Iillui 'Io'
ever ntrogvcerin has teadasty retained It's unsavory
reputation a freak lnVehIlOI 100 SeIS'I'0 10' 0'o
employment II y,
i was Nobel who at last came to the rescue He dis
covered that bv absorbing the treacherous hquld IN
infusoria earth the sensltveness became greatly re-
duced He offered this mixture to the world IN $500
under the OF dynamite mat I'u ilo9ei' '1I''o
glvcern, was in chains.
Several wears later Nobel discovered that form OF
nitroceIluI0se or guncotton, could be made Whlch
would dissolve in nltroglycerin, establishing
thick ielIy and that this Jelly ntrogelatn, could be
rendered very inscnsve as the percentage ol HIVIo
celluOse dissolved in 1t was increased.
To-day the Use Of infusoral earth IN the manufacture
Of dynamite has been generally abandoned; Dut thc
principle involved has survived to splendid ecienCy o
achievement for it IS that which undereS the pro
duct0n of all dynamite, and IN 1t are tound SaIety'
economy, and supreme energy ~ Ile =, 80 ~ - ;. @
absorbent for nitrogycern IS composed OF mixture
containing wood meal and pulVerlZed nitrate o So Oi
nitrate of ammonia often with the addition ol d SIilI
percentage of sulphur or charcoal FIequoiIIy'
too nitroglvcerin is thiCkened with about TWO per
cent of gelatin -pyTOXylln. before DtliB HiAcu WIN
absorbent materials This is known gelatin dy ailhte'
Both common dynamite and gelatin dynamite dte
classed according to the percentage Ol HIosyceliH
contained IN them The favonte IS the forty per cent
the Others used Otenest the nifty the Sixty anu IC
seventy Der cent But the dynamite TORN Is peSeTVeu
to as low as five Der cent in bank-blastIng powder;
while it may run as high as nlnetylouT per cent III
blasting gelatne The commoneSt' lhaI Known liS
forty per cent contains thlrtynIne ana Ieht'S
per cent of pure nitrogyCern. ana along Win Is are
forty-sx and one-tenth per cent OF SODIUM hltIIe'
eleven and half of woOdpulp seVen-tenths oil calcium
carbonate, and one and nine-tenths oil moisture
The Monster Controlled
1T would be difficult overestmate the tremendous
l. import of this invention whereby the trlghtu force
of nitrogycerin was made tractable. BY the new