Beeswax dating candle
However, much brighter and more sophisticated lamps had emerged late in the 18th century, the most important being the Argand oil lamp.
This lamp had a broad flat wick held between two metal cylinders to form a circular wick, with air drawn through it and around it.
Most lamps also had a larger shade around the chimney often of opaque glass to diffuse the light.
Most colza oil lamps have a reservoir often shaped like a classical urn to one side which in some fittings obstructed the light.
As paraffin was much lighter than colza the reservoir could be placed below the flame, enabling many new designs of light fittings.