An operation largely employed 111 the arts, a number of chemical agents being used therefor. Bleachingpowder is used on an immense scale, the materials to be bleached, such as calicoes and other fabrics, rags for papermaking, etc., being first steeped in a dilute solution of the blearhingpowdcr and then 111 dilute acid. I11 the case of calico, the fabric is first of all well washed, and boiled successively with limewater, much dilute sulphuric acid, and weak caustic soda, to remove the weavers

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Definition of  BLEACHING