A short dictionary entry describing Chevalier Claussen's process for cottonizing flax so it can be handled by cotton-type machinery. It outlines the steps: boiling flax straw in caustic alkali, an acidulated bath, scutching, then steeping in bicarbonate of soda and acid so that released gas bursts the fibers apart. It also mentions Lady Moira's earlier experiments, around 1770, with converting tow and refuse flax into a cotton-like material that took dye better than flax.