This section is from the book "An Experimental History Of The Materia Medica", by William Lewis.
Juncus Odoratus five aromaticus C. B. Schsenantbus) squinanthum, saenum camelorum, & palea de mecha quibujdam, Andropogon Schaenan-thus Linn. Sweet rush or Camel's hay: a dried herb, of the grass kind, brought from Turkey and Arabia, in bundles about a foot long; confiding of smooth stalks, in shape and colour somewhat resembling barley draws, full of a fungous pith like those of rushes; and leaves like those of wheat surrounding the stalk with several coats: towards the tops of the stalks are sometimes found short woolly spikes of imperfect red flowers, set in double rows.
The sweet rush, when in perfection, has an agreeable smell, and a warm, bitterish, not unpleafant taste. Diftilled with water, it yields a small quantity of a yellowish, fragrant, and very pungent essential oil: the remaining decoction, thus divested of the aromatic matter of the plant, proves unpleasantly roughish, bitter-ish, and somewhat acrid. A tincture made in rectified spirit, in colour greenish yellow, yields, on being infpiffated, a tolerably grateful, bit-terifh, aromatic extract. This plant, formerly employed as a warm stomachic and deobstruent, appears from the above experiments to be of no inconsiderable activity; but in this country, more common aromatic vegetables have now superseded its use. It has been kept in the shops only as an ingredient in the mithridate and theriaca; and the two colleges, having at last expunged those compositions, have dropt the juncus odoratus.