"Cut your Thistles before St. John,
Or you'll have two instead of one."
This Milk Thistle (Carduus marianus) is said to be the empirical nostrum, anti-glaireux, of Count Mattaei.
"Disarmed of its prickles," writes John Evelyn, "and boiled, it is worth esteem, and thought to be a great breeder of milk, and proper diet for women who are nurses."
In Germany it is very popular for curing jaundice and kindred biliary derangements. When taken by healthy provers in varying quantities to test its toxic effects the plant has caused distension of the whole abdomen, especially on the right side, with tenderness on pressure over the liver, and with a deficiency of bile in hard knotty stools, the colouring matter of the faeces being found by chemical tests present in the urine: so that a preparation of this Thistle modified in strength, and considerably diluted in its doses proves truly homoeopathic to simple obstructive jaundice through inaction of the liver, and readily cures the disorder. A tincture is prepared (H.) for medicinal use from equal parts of the root, and the seeds (with the hull on) together with spirit of wine.
The Carduus benedictus (Blessed Thistle) was first [558] cultivated by Gerard in 1597, and has since become a common medicinal Simple. It was at one time considered to be almost a panacea, and capable of curing even the plague by its antiseptic virtues.
This Thistle was a herb of Mars, and, as Gerard says: "It helpeth giddiness of the head: also it is an excellent remedy against the yellow jaundice. It strengthens the memory, cures deafness, and helps the bitings of mad dogs and venomous beasts." It contains a bitter principle "cnicin," resembling the similar tonic constituent of the Dandelion, this being likewise useful for stimulating a sluggish liver to more healthy action.
The infusion should be made with cold water: when kept it forms a salt on its surface like nitre. The herb does not yield its virtues to spirit of wine as a tincture. Its taste is intensely bitter.
The Carline Thistle (Carlina vulgaris) was formerly used in magical incantations. It possesses medicinal qualities very like those of Elecampane, being diaphoretic, and in larger doses purgative. The herb contains some resin, and a volatile essential oil of a camphoraceous nature, like that of Elecampane, and useful for similar purposes, as cordial and antiseptic. This Thistle grows on dry heaths especially near the sea, and is easily distinguished from other Thistles by the straw-coloured glossy radiate long inner scales of its outer floral cup. They rise up over the florets in wet weather. The whole plant is very durable, like that of the "everlasting flowers:" Cudweed (Antennaria).
The name Carlina was given because the Thistle was used by Charles the Great as a remedy against the plague. It was revealed to him when praying for some means to stay this pestilence which was destroying his army. In his sleep there appeared to him an angel who shot [559] an arrow from a cross bow, telling him to mark the plant upon which it fell: for that with such plant he might cure his soldiers of the dire epidemic: which event really happened, the herb thus indicated being the said thistle. In Anglo-Saxon it was the ever-throat, or boar-throat.
On the Continent a large white blossom of this species is nailed upon cottage doors by way of a barometer to indicate the weather if remaining open or closing.