=THE DYEING OF PAPER PULP.= A Practical Treatise for the use of Papermakers, Paperstainers. Students and others. By JULIUS ERFURT, Manager of a Paper Mill. Translated into English and Edited with Additions by JULIUS HUeBNER, F.C.S., Lecturer on Papermaking at the Manchester Municipal Technical School. With Illustrations and =157 patterns of paper dyed in the pulp.= Royal 8vo, 180 pp. 1901. Price 15s.; India and Colonies, 16s.; Other Countries, 20s.; strictly net. Limited edition. =Contents.= I., =Behaviour of the Paper Fibres during the Process of Dyeing, Theory of the Mordant=--Cotton: Flax and Hemp; Esparto; Jute; Straw Cellulose: Chemical and Mechanical Wood Pulp; Mixed Fibres: Theory of Dyeing.--II., =Colour Fixing Mediums (Mordants)=--Alum: Aluminium Sulphate; Aluminium Acetate; Tin Crystals (Stannous Chloride); Copperas (Ferrous Sulphate); Nitrate of Iron (Ferric Sulphate); Pyrolignite of Iron (Acetate of Iron); Action of Tannic Acid; Importance of Materials containing Tannin; Treatment with Tannic Acid of Paper Pulp intended for dyeing; Blue Stone (Copper Sulphate): Potassium Bichromate: Sodium Bichromate; Chalk (Calcium Carbonate); Soda Crystals (Sodium Carbonate): Antimony Potassium Tartrate (Tartar Emetic).--III., =Influence of the Quality of the Water Used.=--IV., =Inorganic Colours=--1. Artificial Mineral Colours: Iron Buff; Manganese Bronze: Chrome Yellow (Chromate of Lead): Chrome Orange (Basic Chromate of Lead): Red Lead; Chrome Green: Blue with Yellow Prussiate: Prussian Blue: Method for Producing Prussian Blue free from Acid: Ultramarine--2. Natural Mineral Colours (Earth Colours): Yellow Earth Colours: Red Earth Colours; Brown Earth Colours; Green, Grey and Black Earth Colours: White Earth Colours: White Clay (China Clay): White Gypsum; Baryta: Magnesium Carbonate: Talc, Soapstone.--V., =Organic Colours=--1. Colours of Vegetable and Animal Origin: _(a) Substantive (Direct Dyeing) Colouring Matters:_ Annatto; Turmeric: Safflower; _(b) Adjective (Indirect Dyeing) Colouring Matters:_ Redwood; Cochineal; Weld: Persian Berries; Fustic Extract; Quercitron: Catechu (Cutch); Logwood Extract--2. Artificial Organic (Coal Tar) Colours: Acid Colours; Basic Colours: Substantive (Direct Dyeing) Colours; Dissolving of the Coal Tar Colours: Auramine O O; Naphthol Yellow S O; Quinoline Yellow O: Metanil Yellow O: Paper Yellow O: Azoflavine RS O, S O; Cotton Yellow G X X and R X X: Orange 11 O: Chrysoidine A O O, RL O O: Vesuvine Extra O O; Vesuvine BC O O; Fast.