LIGHT PRODUCED FROM SMOKE ALONE. 39
vessel must then be placed on a clear fire ; as soon as the
heat reaches the coal, it begins to melt and run together
like tar. At the same time a vapour rises from the coal
and passes through the tube, to the end of which a candle
or other light must then be applied. The vapour, which
is of an inflammable nature, immediately takes fire, and
continues to burn with an extremely bright flame, as long
as any vapor, or gas, arises from the coal. The flame
produced from the tube of a common tobacco-pipe, is
equal in volume to that of a large candle, but the light
is much clearer and more intense.—Having now described
the process on a small scale, it may easily be imagined
what an effect may be produced by an iron pot, from
which tubes of any number and any length, may convey
the inflammable vapour to every part of a building of any
magnitude or extent.
The extraordinary advantages of this method of pro-
ducing light must be obvious to the most superficial ob-
server. In public buildings, manufactories, light-houses,
&c. its benefits, when it becomes generally known, will
be incalculable. It should be observed that by means of
tubes, either of tin, iron, or any other material, the vapor
or gas may be conveyed to any part of a building where
light is required. The expence with which this method
of illumination is attended is comparatively insignificant,
particularly as the coal employed in the process, when
exhausted of its vapour, is found caked together, and
forms a solid mass of coke, which may afterwards be ap-
plied to any of the purposes for which that material is
used.
After this explanation it would be needless to expa-
tiate on all the applications which may be made of this
useful discovery. There can be no doubt but that the
ingenuity of some of our countrymen, will soon put the
public
vessel must then be placed on a clear fire ; as soon as the
heat reaches the coal, it begins to melt and run together
like tar. At the same time a vapour rises from the coal
and passes through the tube, to the end of which a candle
or other light must then be applied. The vapour, which
is of an inflammable nature, immediately takes fire, and
continues to burn with an extremely bright flame, as long
as any vapor, or gas, arises from the coal. The flame
produced from the tube of a common tobacco-pipe, is
equal in volume to that of a large candle, but the light
is much clearer and more intense.—Having now described
the process on a small scale, it may easily be imagined
what an effect may be produced by an iron pot, from
which tubes of any number and any length, may convey
the inflammable vapour to every part of a building of any
magnitude or extent.
The extraordinary advantages of this method of pro-
ducing light must be obvious to the most superficial ob-
server. In public buildings, manufactories, light-houses,
&c. its benefits, when it becomes generally known, will
be incalculable. It should be observed that by means of
tubes, either of tin, iron, or any other material, the vapor
or gas may be conveyed to any part of a building where
light is required. The expence with which this method
of illumination is attended is comparatively insignificant,
particularly as the coal employed in the process, when
exhausted of its vapour, is found caked together, and
forms a solid mass of coke, which may afterwards be ap-
plied to any of the purposes for which that material is
used.
After this explanation it would be needless to expa-
tiate on all the applications which may be made of this
useful discovery. There can be no doubt but that the
ingenuity of some of our countrymen, will soon put the
public