DAMP n.
A gaseous prodact, formed in coal mines, old wells, pints, etc. Choke damp, a damp consisting principally of carboniCarbonic acid, under Carbonic. -- Damp sheet, a curtain in a mine gallery to direct air currents and prevent accumulation of gas. -- Fire damp, a damp consisting chiefly of light carbureted hydrogen; --…
JERUSALEM n.
ith the glory of the Jewish nation, and the life and death of Jesus Christ. Jerusalem artichoke Etym: [Perh. a corrupt. of It. girasole i.e., sunflower, or turnsole. See Gyre, Solar.] (Bot.) (a) An American plant, a perennial species of sunflower (Helianthus tuberosus), whose tubers are sometimes used as food. (b) One…
LEVULIN n.
A substance resembling dextrin, obtained from the bulbs of the dahlia, the artichoke, and other sources, as a colorless, spongy, amorphous material. It is so called because by decomposition it yields levulose. [Written also lævulin.]
PONDWEED n.
of the genus Potamogeton, of which many species are found in ponds or slow-moving rivers. Choke pondweed, an American water weed (Anarcharis, or Elodea, Canadensis.) See Anacharis. -- Horned pondweed, the Zannichellia palustris, a slender, branching aquatic plant, having pointed nutlets.