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LIST OF THE PLATES.
PLATE I.
The winged figure of Victory will give a white spectre by Artificial light (rather green by daylight), the red wreaths green, the green roses red, and the orange stars blue.
PLATE II.
This black figure will give a white spectre.
PLATE III.
This will give a dark spectre.
PLATE IV.
This green figure will give a red spectre.
PLATE V.
And this red figure will give a green spectre.
PLATE VI.
This orange figure will give a blue spectre.
PLATE VII.
And this blue figure an orange spectre.
PLATE VIII.
This purple hand will give a yellow spectre.
