Washington standard. [volume] (Olympia, Wash. Territory) 1860-1921, 1878-01-12

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Again, many people suppose that there
can De no danger Il . iamP explosioo
unless the whole body Of the oil in Q
lamp il heated 70 the fAshing point: that
because the temperature Of our rooms
never rises to 100 deg, there can be no
danger in using oil whose flashing point
is 1870 deg. But DR.. Baker, Secretary Of
the State Board Of Health of Michigan,
has proved by experiments with lamps
that an explosive mixture may form and
the lamp may explode while the body Of
oil in it 10 not above Is deg. F. The
temperature Of the body Of oil 10 not the
only factor to be considered, because
different parts of the lamp become very
unequslly heated. If you will touch the
brass collar Of lamp which has been
burning for some time, you will find it
quite hot, and the tube supporting the
wick is still more strongly heated. The
Of vapor will be determined
by the hottest part of tho lamp, which
comes in contact with the oil. When the
combustion Is imperfect from any cause,
the brass fittings of the lamp becomes
excessively heated. DR.. Baker found in
his experiments that when the chimney
was removed and the lamp continued to
burn, the temperature Of the brass collar
rose very rapidly in every instance; in
one case, in fourteen minutes 1t rose to
181 deg. F. In this last instance very
rapid explosions occurred BY the side Of
the wick, and to prevent the whole lamp
from exploding the light was extin-
guished. In node of these experiments
did the temperature Of the body of the
oil rise above IS deg. r. Many persons
on leaving room will "turn down the
lamp" to save oil, but such economy is
very liable to cause Z lamp explosion,
which is anything but economical. If
q light is not needed in . room, either
extinguish the lamp or leave it burn
ing with the usual blaze. Q.