MEDICINAL PART. The whole plant.
    Description. -- This marine plant has a cartilaginous, tufted, entangled frond, with branches marked indistinctly with transverse streaks. The lower part is dirty-yellow, the branches more or less purple.
    History. -- It is found growing on the Mediterranean coast, and especially on the Island of Corsica. It is cartilaginous in consistence, is of a dull and reddish-brown color, has a bitter, salt, and nauseous taste, but its odor is rather pleasant. Water dissolves its active principles.
    Properties and Uses. -- It is an excellent anthelmintic. The influence it exercises upon the economy is entirely inappreciable, but it acts very powerfully on intestinal worms. Dr. Johnson says: "It destroys any worms domiciliating in the bowels as effectually as choke-damps would destroy the life of a miner."  This excellent vermifuge plant is one of the ingredients of my Male Fern Vermifuge, see page 469.
    Dose. -- From ten to sixty grains, mixed with molasses or syrup, or in infusion.
    The FUCUS VESICULOSIS, Sea-wrack, or Bladder Fucus, possesses analogous properties.