There is a saying in Scotland: "He who eats of the Dulse of Guerdie, and drinks of the wells Kindingie, will escape all maladies except black death." This marine weed contains within its cellular structure much iodine, which makes it a specific remedy for scrofulous glandular enlargements, or morbid deposits.
[502] In Ireland the Dulse is first well washed in fresh water, and exposed in the air to dry, when it gives out a white powdery substance, which is sweet and palatable, covering the whole plant. The weed is presently packed in cases, and protected from the air, so that being thus preserved, it may either be eaten as it is, or boiled in milk, and mixed with flour of rye. The powdery substance is "mannite," which is abundant likewise on many of our Sea Weeds.
Cattle and sheep are very fond of Dulse, for which reason in Norway it is known as Soudsell, or Sheep's Weed. This Iridea edulis is pinched with hot irons by the fishermen in the south west of England, So as to make it taste like an oyster. In Scotland it is roasted in the frying-pan.
The Maritime Sea Tang (Laminaria digitata) was belauded in the Proverbial Philosophy of Martin Tupper:—
"Health is in the freshness of its savour; and it cumbereth the
beach with wealth;
Comforting the tossings of pain with its violet tinctured Essence."
Tang signifies Anglo-Saxon "thatch," from Sea Weed having been formerly used instead of straw to cover the roofs of houses. When bruised and applied by way of a poultice to scrofulous swellings and glandular tumours, the Sea Tang has been found very valuable. The famous John Hunter was accustomed to employ a poultice of sea-water and oatmeal.
This weed is of common marine growth, consisting of a wide smooth-brown frond, with a thick round stem, and broad brown ribbons like a flag at the end of it. It is familiarly known as Seagirdles, Tangle, Sea Staff, Sea Wand, and Cows' Tails. Fisher boys cut up the stems as handles for knives, or hooks, because, after the haft of [503] the blade is inserted within the stem, this dries, and contracts on the iron staple, becoming densely hard and firm.
The absorbent stem power of the Laminaria for taking up iodine is very large; and this element is afterwards brought out by fire in the kelp kilns of Ireland and Scotland. Sea Tang acts most beneficially against the various forms of scrofulous disease; and signally relieves some rheumatic affections. It is also used largely in the making of glass.
Likewise for scrofula, seawater, being rich in chlorides and iodides, has proved both curative and preventive. Dr. Sena, of Valencia, gave bread made with sea-water in the Misericordia Hospital for cases of scrofulous disease, and other states of defective nutrition, with singular success.
Another Laminaria (Saccharina), with a single olive yellow semi-transparent frond, yields an abundance of sweet "mannit" when boiled and evaporated.