See _Meyer_
Muensterberg, acetylene flame,
Mustard, oil of,
N
Naphey burners,
Naphthalene, formation of, from acetylene,
Neuberg, illuminating power of acetylene,
radiant efficiency of acetylene,
Nieuwland, mixtures of acetylene and chlorine,
Nichols, illuminating power of acetylene after storage,
temperature of acetylene flame,
Nickel and acetylene, reactions between,
Nipples, burner, materials for,
Nitrides in carbide,
Nitrogen in flames, effect of,
Non-automatic generators. See _Generators (non-automatic)_
Non-luminous acetylene flame, appearance of,
burners. See _Burners (atmospheric)_
Non-return valves,
O
O. C. A. burner,
Odour of acetylene,
Oil, action of, on carbide,
castor, for acetylene joints,
in generators,
in residues,
in seals,
linseed, for acetylene joints,
mustard,
olive, for seals,
(See also _Paraffin oil_)
Olive oil for seals,
Oil-gas, enrichment of,
Optical efficiency of acetylene,
Orders in Council, air in acetylene,
compression of absorbed acetylene,
acetylene-oil-gas,
neat acetylene,
Origin of petroleum,
Orka burner,
Ortloff, friction of acetylene,
Overheating in generators,
See also _Polymerisation_
Oxide of iron purifier,
Oxy-acetylene blowpipe,
Oxygen required for combustion of acetylene,
of benzene,
combustion of acetylene with,
flames burning in,
P
Paint, cause of frothing in generators,
gas-fitters',
Paraffin oil,
action of, on carbide,
flash-point of,
illuminating power of,
in residues,
lamps,
lighting, effect of on air,
heat developed by,
quality of different grades of,
use of in automatic generators,
seals,
Paraffin wax, treatment of carbide with,
Partial pressure,
Pendants, water-slide for acetylene,
Petroleum oil.
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