Chemically the Horse radish contains a volatile oil, identical with that of mustard, being highly diffusible and pungent by reason of its "myrosin." One drop of this volatile oil will suffice to odorise the atmosphere of a whole room, and, if swallowed with any freedom, it excites vomiting. Other constituents of the root are a bitter resin, sugar, starch, gum, albumen, and acetates.
A mixture of the fresh juice, with vinegar, if applied externally, will prove generally of service for removing freckles.
Bergius alleges that by cutting the root into very small pieces without bruising it, and then swallowing a tablespoonful of these fragments every morning without chewing them, for a month, a cure has been effected in chronic rheumatism, which had seemed otherwise intractable.
For loss of the voice and relaxed sore throat the [273] infusion of Horse radish makes an excellent gargle; or it may be concentrated in the form of a syrup, and mixed for the same use—a teaspoonful, with a wine-glassful of cold water.
Gerard said of the root: "If bruised and laid to the part grieved with the sciatica, gout, joyntache, or the hard swellings of the spleen and liver, it doth wonderfully help them all." If the scraped root be macerated in vinegar, it will form a mixture (which may be sweetened with glycerine to the taste) very effective against whooping cough. In pimply acne of the skin, to touch each papula with some of the Compound Spirit of Horse Radish now and again will soon effect a general cure of the ailment.
HOUSE LEEK (Crassulaceoe).
The House Leek (Sempervivum tectorum), or "never dying" flower of our cottage roofs, which is commonly known also as Stone-crop, grows plentifully on walls and the tops of small buildings throughout Great Britain, in all country districts. It is distinguished by its compact rose-shaped arrangement of seagreen succulent leaves lying sessile in a somewhat flattened manner, and by its popularity among country folk on account of these bland juicy leaves, and its reputed protective virtues. It possesses a remarkable tenacity of life, quem sempervivam dicunt quoniam omni tempore viret, this being in allusion to its prolonged vitality; for which reason it is likewise called Ayegreen, and Sengreen (semper, green).
History relates that a botanist tried hard for eighteen months to dry a plant of the House Leek for his herbarium, but failed in this object. He afterwards restored it to its first site when it grew again as if nothing had interfered with its ordinary life.
[274] The plant was dedicated of old to Thor, or Jupiter, and sometimes to the Devil. It bore the titles of Thor's beard, Jupiter's eye, Joubarb, and Jupiter's beard, from its massive inflorescence which resembles the sculptured beard of Jove; though a more recent designation is St. George's beard.
"Quem sempervivam dicunt quoniam viret omni
Tempore—'Barba Jovis' vulgari more vocatur,
Esse refert similem predictoe Plinius istam."
Macer.