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or forming dibasic salts with potassium, sodium, or ammonium, in conjunction with vegetable, animal, or metallic coloringmat-ters. 2. Salts of manganese, lead, or nickel not containing ferrocyanogen. 3.Ferrocyanides, etc., of potassium, sodium, and ammonium, in conjunction with insoluble salts of manganese, lead, or nickel. 4. Insoluble ferro-or ferrid-cyanide of manganese, or soluble sulpho-cyanide of manganese alone, or forming double salts with potassium, sodium, or ammonium. Hooper, 1860. Oxides of iron, either alone or dissolved in an acid, are mixed with the pulp. Nissen, 1860. Treating paper with a preparation of iron, together with ammonia, prussiate of potash and chlorine, while in the pulp or being sized. Middleton, 1860. One portion of a bank-note is printed upon one sheet of thin paper and the other part on another; the two are then cemented together by india-rubber, gutta-percha, or other compound. The interior printing is seen through its covering sh