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Let the seed of lycopodium be scattered over a glass plate, or even like a cloud in the air, and let a distant point of light be regarded through it; the luminous point will appear surrounded by a series of coloured rings, and when the light is intense, like the electric or the Drummond light, the effect is exceedingly fine.

The famous Drummond Light, that a few years ago astonished Europe—what is that but the ignited flame of a mixture of oxygen and hydrogen projected against a small piece of lime?

The rays of the new moral Drummond Light were first concentrated to a focus at Paris, to illuminate the universe.

When this flame impinges on a piece of lime, we have the dazzling Drummond light.

The Drummond light had raised thoughts and hopes of vast improvements in public illumination.