The liquid oil dissolves santalin: Oil of the aurantiaceæ.
The thick oil does not dissolve santalin: Mace oil.
β. The oil is laevorotatory.
The oil shows an acid reaction and dissolves in equal parts of alcohol: Lavender oil.
The oil shows a neutral reaction and dissolves in 12 to 15 parts of alcohol: Marjoram oil.
II. The oil gives no explosion with iodine, but shows an increase in temperature with or without emission of red vapors.
a. The oil shows an acid reaction.
α. The blue or green oil shows the acid reaction only indistinctly: Milfoil oil.
β. The colorless or brown oil gives a turbid fluid with sulphuric acid. It is laevorotatory: Spanish marjoram oil.