Such virtues as the herb possesses were thought to have been taught by the god Mercury. The Greeks called it Mercury's Grass (Ermou poa). When boiled and eaten with fried bacon in error for the English spinach, Good King Henry, it has produced sickness, drowsiness, and convulsive twitchings. The root affords both a blue and a crimson colour for dyeing.
MINTS. (Pennyroyal, Peppermint, and Spearmint).
Several kinds of the Mints have been used medicinally from the
earliest times, such as Balm, Basil, Ground Ivy, Horehound,
Marjoram, Pennyroyal, Peppermint, Rosemary, Sage, Savory,
Spearmint, and Thyme, some being esteemed rather as pot herbs,
than as exercising positive medicinal effects. The most useful as
Herbal Simples which have yet to be considered are Pennyroyal,
Peppermint, and Spearmint. The Cat Mint (Nepeta cataria) and
Horse Mint are of minor importance.
[334] All the Mints are severally provided with leaves of a familiar fragrant character, it having been observed that this aromatic vegetation is a feature of deserts, and of other hot, dry places, allover the world. Tyndall showed the power exercised by a spray of perfume when diffused through a room to cool it, or in other words to exclude the passage of the heat rays; and it has been suggested that the presence of essential oils in the leaves of these plants serves to protect them against the intense dry heat of a desert sun all effectively as if they were partly under shelter. Nevertheless Mints, with the exception of "Arvensis," are the inhabitants of wet and marshy wastes.
They have acquired their common name Mentha from Minthes (according to Ovid) who was changed into a plant of this sort by Proserpina, the wife of Pluto, in a fit of jealousy. Their flowering tops are all found to contain a certain portion of camphor. Pliny said: "As for the garden Mint, the very smell of it alone recovers and refreshes the spirits, as the taste stirs up the appetite for meat, which is the reason that it is so general in our acid sauces, wherein we are accustomed to dip our meat." The Mints for paying tithes, with respect to which the Pharisees were condemned for their extravagance by our Saviour, included the Horse Mint (Sylvestris), the round-leaved Mint, the hairy Mint (Aquatica), the Corn Mint (Arvensis), the Bergamot Mint, and some others, besides the "Mint, Rue, and Anise," specially mentioned. "Woe unto you Pharisees; for ye tithe Mint and Rue, and all manner of herbs. Ye pay tithe of Mint, and Anise, and Cummin."
The Mint Pennyroyal (Mentha Pulegium) gets its name from the Latin puleium regium, because of its royal efficacy in destroying fleas (pulices). The French call [335] this similarly, Pouliot. It grows on moist heaths and pastures, and by the margins of brooks, being cultivated further in our herb gardens, for kitchen and market uses. Also, it is produced largely about Mitcham, and is mostly sold in a dry state. The herb was formerly named Pudding Grass, from its being used to make the stuffing for meat, in days when this was termed a pudding. Thus we read in an old play, The Ordinary:—
"Let the corporal
Come sweating under a breast of mutton stuffed with
[pudding]."
The Pennyroyal was named by the Greeks Bleekon and Gleekon, being often used by them as a condiment for seasoning different viands. Formerly it was known in England as "Lurk in ditch," and "Run by the ground," from its creeping nature, arid love of a damp soil. Its first titles were "Puliall Royall," and "Hop Marjoram." A chaplet of Pennyroyal was considered admirable for clearing the brain. Treadwell says, the Pennyroyal was especially put into hog's puddings, which were made of flour, currants, and spice, and stuffed into the entrail of a hog.
The oil of Pennyroyal is used commercially in France and Germany. Its distilled water is carminative and anti-spasmodic; whilst the whole plant is essentially stimulating. The fresh herb yields about one per cent. of a volatile oil containing oxygen, but of which the exact composition has not been ascertained. From two to eight drops may be given as a dose in suitable cases, but not where feverish or inflammatory symptoms are present.
If added to an ordinary embrocation the oil of [336] Pennyroyal increases the reddening and the benumbing (anodyne) effects, acting in the same way as, menthol (oil of Peppermint) for promptly dispelling severe neuralgic pain. With respect to the Pennyroyal, folk speak in Devonshire of "Organs," "Organ Tea," and "Organ Broth." An essence is made of the oil, mixed and diluted with spirit of wine. The Pennyroyal has proved useful in whooping cough; but the chief purpose to which it has long been devoted, is that of promoting, the monthly flow with women. Haller says he never knew an infusion of the herb in white wine, with steel, to fail of success; Quod me nunquam fefellit. It is certain that in some parts of England preparations of Pennyroyal are in considerable demand, and a great number of women ascribe emmenagogue properties to it, that is, the power of inducing the periodical monthly flux. Many married women of intelligence and close observation, assert as a positive fact, that Pennyroyal will bring on the periodical flow when suppressed; and yet the eminent jurisprudist, Dr. Taylor, was explicit in declaring that Pennyroyal has no such properties. He stated that it has no more effect on the womb than peppermint or camphor water. So there is difficulty in collecting evidence as regards the real action of Pennyroyal in such respect. Chemists supply the medicine in the full belief of this eminent opinion just quoted: at the same time they know it is not wanted for "catarrh of the chest," as alleged. The purchaser keeps her secret to herself, and does not communicate her experience to anyone. Dr. Taylor evidently supposed Peppermint water and Camphor water to be almost inert, especially as exercising any toxical effect on the womb. The medicinal basis of the latter is certainly a powerful agent, and its stimulating volatile principles [337] are found to exist in most of the aromatic herbs; in fact, Camphor is a concrete volatile vegetable oil, and camphoraceous properties signalise all the essences derived from carminative Herbal Simples.