The cochineal insects furnish the gorgeous carmine, crimson, scarlet, and purple "lakes." Seventy thousand cochineal insects go to a pound of dried cochineal, says the "Newcastle Weekly Chronicle." Prussian blue comes from fusing horses hoofs with impure potassium carbonate. Various "lakes" are derived from roots, barks, and gums. Blue-black comes from the charcoal of the vine-stock. Turkey red is made from the madder plant, which grows in India. The yellow sap of a Siam tree produces gamboge yellow. Raw sienna is the natural earth near Siena, Italy, and raw umber is an earth • found near Umbria. Chinesewhite is made from zinc; scarlet is iodide of mercury; vermillion is from cinnabar; Indian ink is made from burned camphor.
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Evening Post, Volume CXIII, Issue 62, 15 March 1927, Page 13
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117Untitled Evening Post, Volume CXIII, Issue 62, 15 March 1927, Page 13
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