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KELP (in M.E. culp or culpe, of unkno...

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Originally appearing in Volume V15, Page 721 of the 1911 Encyclopedia Britannica.
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KELP (in M.E. culp or culpe, of unknown origin; the Fr. See also:equivalent is varech)  , the ash produced by the incineration of various kinds of See also:sea-See also:weed (See also:Algae) obtainable in See also:great abundance on the See also:west coasts of See also:Ireland and See also:Scotland, and the See also:coast of See also:Brittany . It is prepared from the deep-sea tangle (Laminaria digitata), See also:sugar wrack (L. saccharina), knobbed wrack (Fucus nodosus), See also:black wrack (F. serratus), and See also:bladder wrack (F. vesiculosus) . -The Laminarias yield what is termed " See also:drift-weed See also:kelp," obtainable only when See also:cast up on the coasts by storms or other causes . The See also:species of Fucus growing within the tidal range are cut from the rocks at See also:low See also:water, and are therefore known as " cut-weeds." The weeds are first dried in the See also:sun and are then collected into shallow pits and burned till they. See also:form a fused See also:mass, which while still hot is sprinkled with water to break it up into convenient pieces . A ton of kelp is obtained from 20 to 22 tons of wet sea-weed . The See also:average See also:composition may vary as follows: See also:potassium sulphate, xo to 12%; potassium chloride, 20 to 25%; See also:sodium carbonate, 5%; other sodium and See also:magnesium salts, 15 to 20%; and insoluble ash from 40 to 50% . The relative richness in See also:iodine of different samples varies largely, See also:good drift kelp yielding as much as-xo to 15 lb per ton of 22i cwts., whilst cut-weed kelp will not give more than 3 to 4 lb . The use of kelp in See also:soap and See also:glass manufacture has been rendered obsolete by the See also:modern See also:process of obtaining carbonate of soda cheaply from See also:common See also:salt (see IODINE) .

End of Article: KELP (in M.E. culp or culpe, of unknown origin; the Fr. equivalent is varech)
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