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Mixed colours. Colours change. Tongues of white flame formed.

The colour of the light was chiefly red; but every tint had its turn, and sometimes two or three were mingled; blue and yellow streamers shot across the terrible glare, or, starting side by side from the wide expanse of the radiant arch, melted into each other, and flung a strange shade of emerald over the illuminated landscape. Again this green subdues and overcomes the red; then azure and orange blend in rapid flight, subtle rays of violet pierce through a broad flash of yellow, and the combined streams issue in innumerable tongues of white flame, which mount towards the zenith.

The illustration which accompanies this description in the work is reproduced on Plate II., and forcibly reminds one of the “curtains” of the Aurora described in the preceding Chapter by Mons. Lottin.

Plate II.