The Spotted Hemlock (Conium maculatum), and the Sickly-smelling Henbane (Hyoscyamus niger), are plants of common wild growth throughout England, especially the former, and are well known to everyone familiar with our Herbal Simples. But each is so highly narcotic as a medicine, and yet withal so safely useful externally to allay pain, as well as to promote healing, that their outward remedial forms of application must not be overlooked among our serviceable herbs. Nevertheless, for internal administration, these herbs lie altogether beyond the pale of domestic uses, except in the hands of a doctor.

The Hemlock is an umbelliferous plant of frequent growth in our hedges and roadsides, with tall, hollow stalks, powdered blue at the bottom, whilst smooth and splashed about with spotty streaks of a reddish purple. It possesses foliage resembling that of the garden carrot, but feathery and more delicately divided.

The name has been got from healm, or haulm, straw, and leac, a plant, because of the dry hollow stalks which remain after flowering is done. In Kent and Essex, the Hemlock is called Kecksies, and the stalks are spoken of as Hollow Kecksies.

Keckis, or Kickes, of Humblelockis are mentioned by our oldest herbalists. In a book about herbs, of the fourteenth century, two sorts of Hemlock are specified—one being the Grete Homeloc, which is called "Kex," or "Wode Whistle," being of no use except for poor men's fuel, and children's play.

Botanically, it bears the name of Conium maculatum (spotted), the first of these words coming from the Greek, konos, a top, and having reference to the giddiness which the juice of hemlock causes toxically in the [249] human brain. The unripe fruit of this plant possesses its peculiar medicinal properties in a greater degree than any other part, and the juice expressed therefrom is more reliably medicinal than the tincture made with spirit of wine, from the whole plant.

Soil, situation, and the time of year, materially affect the potency of Hemlock. Being a biennial plant, it is not poisonous in this country to cattle during the first year, if they eat its leaves.

The herb is always uncertain of action unless gathered of the true "maculatum" sort, when beginning to flower. Its juice should be thickened in a water bath, or the leaves carefully dried, and kept in a well-stoppered bottle, not exposed to the light. Cole says, "if asses chance to feed on Hemlock, they will fall so fast asleep that they seem to be dead, insomuch that some, thinking them to be dead indeed, have flayed off their skins; yet after the Hemlock had done operating they had stirred and wakened out of their sleep."

The dried leaves of the plant, if put into a small bag, and steeped in boiling water for a few minutes, and then applied hot to a gouty part, will quickly relieve the pain; also, they will help to soften the hard concretions which form about gouty joints. If the fresh juice of the Hemlock is evaporated to a thick syrup, and mixed with lanoline (the fat of sheep's wool), to make an ointment, it will afford wonderful relief to severe itching within and around the fundament; but it must be thoroughly applied. For a poultice some of this thickened juice may be added to linseed meal and boiling water, previously mixed well together.

Conium plasters were formerly employed to dry up the breast milk, and are now found of service to subdue palpitations of the heart.

[250] An extract of Hemlock, blended with potash, is kept by the chemists, to be mixed with boiling water, for inhalation to ease a troublesome spasmodic cough, or an asthmatic attack. In Russia and the Crimea, this plant is so inert as to be edible; whereas in the South of Europe it is highly poisonous.