The root is faintly aromatic, and has a sweetish taste. It contains a chemical principle, "apiin," sugar, starch, and a volatile oil. Likewise the fruit furnishes the same volatile oil in larger abundance, this oil comprising parsley-camphor, and "apiol," the true essential oil of parsley, which may be now had from all leading druggists. Apiol exercises all the virtues of the entire plant, and is especially beneficial for women who are irregular as to their monthly courses because of ovarian debility. From three to six drops should be given on sugar, or in milk (or as a prepared capsule) twice or three times in the day for some days together, at the times indicated, beginning early at the expected date of each period. If too large a dose of apiol be taken it will cause headache, giddiness, staggering, and deafness; and if going still further, it will induce epileptiform convulsions. For which reason, in small diluted doses, the same medicament will curatively meet this train of symptoms when occurring as a morbid state. And it is most likely on such account Parsley has been popularly said to be "poison to men, and salvation to women." Apiol was first obtained in 1849, by Drs. Joret and Homolle, of Brittany, and proved an excellent remedy there for a prevailing ague. It exercises a singular influence on the great nervous centres within the head and spine. Bruised Parsley seeds make a decoction which is likewise beneficial against [409] ague and intermittent fever. They have gained a reputation in America as having a special tendency to regulate the reproductive functions in either sex. Country folk in many places think it unlucky to sow Parsley, or to move its roots; and a rustic adage runs thus: "Fried parsley brings a man to his saddle, and a Woman to her grave." Taking Parsley in excess at table will impair the eyesight, especially the tall Parsley; for which reason it was forbidden by Chrysippus and Dionysius. The root acts more readily on the kidneys than other parts of the herb; therefore its decoction is useful when the urine becomes difficult through a chill, or because of gravel. The bruised leaves applied externally will serve to soften hard breasts early in lactation, and to resolve the glands in nursing, when they become knotty and painful, with a threatened abscess. Sheep are fond of the plant, which protects them from foot-rot; but it acts as a deadly poison to parrots.