Obs. The oil of fennel of the shops is the product of the fruit of Fœniculum vulgare, or common, wild, or bitter fennel. It closely resembles that of sweet fennel, but is scarcely so agreeable either in taste or smell. It is chiefly used to scent soaps.
Oil of Firwood. Syn. Oleum pini sylvestris.
An essential oil, distilled from the leaves of Pinus sylvestris.
Oil of Fleabane. (Ph. U. S.) Syn. Oleum erigeronis canadensis. An essential oil, distilled from Canada erigeron.—Dose, 5 minims in hæmorrhage.
Oil, Fu′sel. Noticed at page 772.
Oil of Gal′banum. Syn. Oleum galbani (Ph. Bor.), L. From galbanum, 2 lb.; water, 16 fl. oz.; distilled together. Yellow; resembles oil of asafœtida, but milder.
Oil of Gar′lic. Syn. Sulphide of allyl. From the bruised bulbs or ‘cloves’ of Allium sativum, or garlic. It possesses the peculiar odour, taste, and other properties of the bulbs, in a highly exalted degree.
Obs. When a mixture of oil of black mustard and sulphide of potassium is exposed in a sealed glass tube to a temperature above that of 212° Fahr., sulphocyanide of potassium and garlic oil are formed. On the other hand, when the compound of garlic oil and chloride of mercury (formed by adding to an alcoholic solution of the oil a like solution of the chloride) is gently heated with sulpho-cyanide of potassium, mustard oil, with all its characteristic properties, is called into existence.
Oil of Gaulthe′′ria. See Oil of Partridge berry (below).
Oil of Gen′tian. Syn. Oleum gentianæ, L. From the root. Butyraceous; smells strongly of gentian. 3 cwt. yield 1 dr. (barely).