Eucalyptol (C_{24}H_{20}O_{2}) is limpid, colorless, turns the plane of polarization, has a specific gravity of 0.905, and boils at 347° F. Its vapor mixed with air has an agreeable, refreshing taste, and its dilute solutions remind one of roses. Eucalyptene (C_{24}H_{18}) has a specific gravity of 0.836, and boils at 329° F. _Fennel oil_ (_oleum fœniculi_) is derived by distillation from the fruits of _Fœniculum vulgare, Gaertner_. Large quantities of it are produced in Saxony, and also in Galicea. It is quite colorless, limpid, of specific gravity 0.940 to 0.970 and, with a full content of stearoptene, possesses a nauseous sweet taste and odor. It contains 60 to 70 per cent. of anethol and congeals at from 41° to 50° F. to a crystalline mass. The leaves of the plant also contain a volatile oil, which is, however, less valued than the seed-oil. Good fennel oil should dissolve clear in 1 to 2 parts of 90 per cent. alcohol. Direct adulterations of this oil do not occur, but the stearoptene is frequently withdrawn by fractional distillation whereby the oil loses much in value. Such oil freed from stearoptene does not congeal, has a more bitter than sweet taste and does not dissolve in the above-mentioned proportion in alcohol. In perfumery fennel oil is but little used; sometimes in connection with other volatile oils for perfuming soaps. _Geranium oil_, _palmarosa oil_, _Turkish geranium oil_ is obtained from _Andropogon Pachnodes_. It is yellowish, limpid, of specific gravity 0.890 at 59° F., possesses a very agreeable rose-like odor resembling that of geranium oils from _Pelargonium radula, Aiton_, and for this reason is generally designated as Turkish geranium oil. The odor of the oil is improved by shaking it with water containing lemon juice, any content of copper being thereby removed. The washed oil is then brought into shallow dishes and exposed for two or three weeks to the sun, whereby its odor becomes still more like that of rose oil. The oil thus prepared is much used for adulterating rose oil. Turkish geranium oil is also much used for the adulteration of genuine geranium oil and is itself adulterated with oil of turpentine. It is extensively employed in perfumery, especially for perfuming hair oils and pomades, and in conjunction with geranium oils for rose soap. _East Indian geranium oil_ is obtained, chiefly in the Presidency of Bombay, from _Andropogon Schoenantus, L._ It is greenish-yellow to yellow-brown, has a specific gravity of 0.906 at 59° F., and consists mainly of geraniol (C_{10}H_{18}O). Its odor is rose-like, though modified by a lemon-like odor. It is principally used for perfuming cheaper articles.