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148 "Powder Versus Dynamite"
The Explosive power of Dynamite
as compared to that of Blasting
powder is 2 2/3 to 1, that is to say
the same quantity of Dynamite
will do 2 2/3 times the work of
powder. At the Calamine Mines of
Chrzanow, the working effect of
Each hewer, driving in hard
dolomite rock is in a 8 hours Shift
Powder 6:5 cubic feet with dynamite,
Versus against 4 cubic feet with powder
Dynamite and when using the former, Each man
can bore and fire 3 holes of 16 inches
against 2 with powder. The Explosion
of dynamite is very sudden, and the
rock is far more shattered by it, without
being projected, as is the case with
powder. At the tin mines of Grauper
in Bohemia, dynamite only 2 hours
a decided advantage when deep
bore holes can be used, but is also
unquestionable in water bearing Rocks,
when a charge of dynamite has never
failed when properly placed, it is also
considered much safer than powder
March 1 1873
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Antidote for Arsenic
Antidote Tincture of Chloride of Iron 1 dram
for Bicarbonate of Soda or potash 1 dram
Arsenic Tepid Water a teacupfull. Mix
Give as much as you please. Sure.
May 24 1879
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Fly Paper
Boiled Linseed Oil and Resin
Melt and Add Honey. Soak
Fly the paper in a strong solution of
Paper Alum and dry it, before you
apply the above.
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Magnetic Iron 149
Magnetic Iron Ore, or "Magnetite"
received its name in Early times from
its magnetic properties. A mass of the
ore influences the needle, at a great
distance. The Magnetism of the Earth
is polar, the same side which repels
one End of the needle attracting the
other, and vice-versa with the other
side. It crystalizes in the cubical
system, the octahedron, and Rhombic
dodecahedron being common forms.
It occurs in Sweden, Norway, the
Ural mountains, Etc and on a very
Magnetic much smaller scale in England.
Iron It the southeast corner of Dartmoor
a band of this Kind of ore, deranges
a compass as it is carried past its
vicinity, and sailors say that there
is a place in Cardigan Bay where
on passing a reef of rocks the needle
is influenced and set oscillating.
A large mass of this deposit in the
southeast Extremity of the Island of
Elba, has a similar Effect; in Sweden
also, deposits are discovered by means
of this property. Meteorites frequently
contain a percentage of Iron greater
than magnetite, associated with Nickel
and cryoolite in some cases, but the
rarity of this occurrence precludes
them from being classed as Iron
ores, by which term we understand
a mineral in sufficient quantities
to be Economically and advantageously
Extracted March 1 1873
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