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This effect, so admirably complete, too, as it is, and perfect in its way, probably results from the extraordinary intensity of the light, apart from its useful photographic property; for side by side with the magnesium light the wax candle flame looked not much brighter than the red granite of the walls of the room.

Three pieces of photographic apparatus were working together in different parts of the room, and the illumination was furnished by a magnesium light at the opportune moment.

It was taken instantaneously by a flash of magnesium light.

These photographs, taken rapidly by magnesium light, are not perfect, but they are records.

The dazzling magnesium light enables us all to verify the reality of the phenomenon.