Last edited 21 Jul 2020

Kelp

Archaeological Evidence for Glassworking, Guidelines for Recovering, Analysing and Interpreting Evidence, published by Historic England in 2018, defines kelp as: ‘A term for a type of seaweed, and also ash from burning the seaweed, which was used as a source of sodium oxide flux in glassmaking in the 18th and early 19th centuries.’

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