KELP

A common term for sea weed or vraic, which consists of different species of Fucm (Lin.). In a strict sense, the term kelp is confined to the produce of sea weeds when burned, which consists of alkaline ashes used in the manufacture of gla and soap. It has been recently found, however, that the alkali required for these purposes can be obtained more abundantly from sea-salt, and kelp is at present chiefly used as a manure. For this purpose it is eagerly sought after by all farmers on the sea coast, and especially by those who have dry soils, the salt contained in the kelp being a powerful absorbent of moisture from the atmosphere. It has lately acquired much importance as a source of iodine. [s. 639]