-------------+---------------+---------------+------------------+------------- | | Proportion of | Color of the oil | Name of | Color of the | nitroprusside | after | Color of the the oil. | oil. | of | the experiment. | precipitate. | |copper to oil. | | -------------+---------------+---------------+------------------+------------- Caraway |clear as water | 1 : 1000 parts|slightly | dirty gray. | and colorless | | yellowish | Fennel |pale yellowish | 1 : 1000 " |brownish-yellow | black. Dill |pale | 1 : 1000 " |becomes first | " | reddish-yellow| | colorless, then | | | | yellowish | " Anise-seed |pale yellow | 1 : 1000 " |yellow | | | | " | Camomile | | | | (green) |yellowish | 1 : 1000 " |brownish-yellow | ash-gray. Lavender |pale yellow | 1 : 1000 " |wine-yellow | slate-gray. " | " | 1 : 100 " |brown-yellow | " Mint (curly) |colorless | 1 : 1000 " |wine-yellow | first gray, | | | | then black. Peppermint | " | 1 : 1000 " |yellowish | black. " | " | 1 : 100 " |brownish-yellow | " Balm |yellow | 1 : 1000 " |dark wine-yellow | " Marjoram |colorless | 1 : 1000 " |yellowish | " " | " | 1 : 100 " |brown-yellow | " Sage |slightly | 1 : 1000 " |wine-yellow | dark green. | yellowish | | | " | " | 1 : 100 " |brown-yellow | dark green, | | | | then nearly | | | | black. Thyme (field)| " | 1 : 1000 " |brownish-yellow | slate-gray. " | " | 1 : 100 " |dark brown-yellow | nearly black. Wormwood |yellow-brown | 1 : 1000 " |dark brown | black. Tansy |pale yellow | 1 : 1000 " |red-brown | dirty brown. Milfoil |dark | 1 : 1000 " |first pale blue, | gray-brown. | azure-blue | | then dark green | Cajeput |colorless | 1 : 1000 " |brownish-yellow | black. Clove |slightly | 1 : 2000 " |rose-red and clear| slate-gray. | yellowish | | | " | " | 1 : 1000 " |violet-red and | "