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WELDING-HEAT

Volume 18 · 81 words · 1797 Edition

in smithery, a degree of heat given to iron, &c., sufficient to make the surfaces of two pieces incorporate upon being beaten together with a hammer.

WANMANNIA, in botany: A genus of plants of the clas oelandria, order monogynia, and arranged in the natural classification with those plants the order of which is doubtful. The calyx is four-leaved, the corolla has four petals, and the capsule is bilocular and bifractated. There are four species, none of which are natives of Britain.