This section is from the book "An Experimental History Of The Materia Medica", by William Lewis.
Zingiber Pharm. Lond. & Edinb. & C. B. Ginger: the root of a reed-like plant (Amomum Zingiber Linn.), growing spontaneously in the East Indies, and cultivated in some part of the Weft; brought over in knotty branched flattish pieces, freed from the outer bark, of a pale colour and fibrous texture: that which is least fibrous is accounted the best.
This warm aromatic root, of common use as a spice in flatulent colics, etc. appears to be much less liable to heat the constitution than might be expected from the penetrating heat and pungency of its taste, and from the fixedness of its active principles. It gives out the whole of its virtue to rectified spirit, and great part of it to water, tinging the former of a deep, the latter of a pale yellow colour: the spirituous tincture, infpifTated, yields a fiery extract, smel-ling moderately of the ginger: the watery infu-sion, boiled down to a thick consistence, dissol-ved a fresh in a large quantity of water and strongly boiled down again, retains still the heat and pungency of the root, though little or nothing of its smell: there does not seem to be any of the common spices whose pungency is of so fixed a kind. In the shops are kept a syrup made from an infusion of three † or four ounces of the root in four ‡ or three ‡ pints of boiling water, which is agreeably impregnated with its warmth and flavour; and the candied ginger ||, brought from abroad, which is likewise moderately aromatic.
Unguent, e cacee zinci Ph. Ed.
Syr. zingib. † Ph. Ed.
‡ Ph. Lond.
|| Zingiber conditum Ph. Ed.