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COLOUR AND CHEMICAL CONSTITUTION OF NATURE. [Footnote: 'Fortnightly Review,' November 1876, see article 'Fermentation.'] of the same wire raised gradually to incandescence, the obscure radiation Dark 1 Dark 6 Faint red 10 Dull red 25 Red 37 Full red. 27 Orange 60 Yellow 93 White 122 Here, as elsewhere throughout nature, if accuracy.