Flea Trainer

Limelight is a type of stage lighting once used in theaters and music halls. An intense illumination is created when an oxy-hydrogen flame is directed at a cylinder of lime (calcium oxide,) which can be raised to 2572°C before melting. The light is produced by a combination of incandescence and cando-luminescence.

This vaudeville act is from a 1952 Charlie Chaplin movie named "Limelight" that has the famous music score by Chaplin himself.