But these notions, in my opinion, are counterbalanced by the authority of a writer of the very highest repute: for we find the poet Sophocles asserting that the trefoil is a venomous plant. Simus, too, the physician, maintains that a decoction of it, or the juice, poured upon the human body, is productive of burning sensations similar to those experienced by persons when they have been stung by a serpent and have trefoil applied to the wound. It is my opinion, then, that trefoil should never be used in any other capacity than as a counter-poison; for it is not improbable that the venom of this plant has a natural antipathy to all other kinds of poisons, a phænomenon which has been observed in many other cases as well. I find it stated, also, that the seed of the trefoil with an extremely diminutive leaf, applied in washes to the face, is extremely beneficial for preserving the freshness of the skin in females. CHAP. 89.—TWENTY-EIGHT REMEDIES DERIVED FROM THYME. Thyme[2334] should be gathered while it is in flower, and dried in the shade. There are two kinds of thyme: the white thyme with a ligneous root, which grows upon declivities, and is the most esteemed of the two, and another variety, which is of a darker colour, and bears a swarthy flower. They are, both of them, considered to be extremely beneficial to the sight, whether used as an article of food or as a medicament, and to be good for inveterate coughs. Used as an electuary, with vinegar and salt, they facilitate expectoration, and taken with honey, they prevent the blood from coagulating. Applied externally with mustard, they dispel chronic fluxes of the fauces, as well as various affections of the stomach and bowels. Still, however, these plants must be used in moderation, as they are of a heating nature, for which reason it is that they act so astringently upon the bowels. In cases of ulceration of the intestines, the dose should be one denarius of thyme to one sextarius of oxymel; the same proportions, too, should be taken for pains in the sides, between the shoulder-blades, or in the thoracic organs. Taken with oxymel, these plants are used for the cure of intestinal diseases, and a similar draught is administered in cases of alienation of the senses and melancholy.