LSE4333873: The rust of flax (maceration to facilitate the separation of the bark from the stem) in the Lys (river north of France and Belgium).Engraving by Emile Claus, to illustrate the story “” La Belgique””, by Camille Lemonnier (1844-1913), writer and art critic. the direction of Edouard Charton (1807-1890), Hachette edition, Paris., Claus, Emile (1849-1924) / Bridgeman Images