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 HÜbner, 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. Price 15s. net. (Post free, 15s. 6d. home; 16s. 6d. abroad.)

Contents.

Behaviour of the Paper Fibres during the Process of Dyeing, Theory of the Mordant -- Colour Fixing Mediums (Mordants) -- Influence of the Quality of the Water Used -- Inorganic Colours -- Organic Colours -- Practical Application of the Coal Tar Colours according to their Properties and their Behaviour towards the Different Paper Fibres -- Dyed Patterns on Various Pulp Mixtures -- Dyeing to Shade -- Index.

THE PAPER MILL CHEMIST. By Henry P. Stevens, M.A., Ph.D., F.I.C. Royal 12mo. 60 Illustrations. [In the press.]

Contents.

Introduction. -- Dealing with the Apparatus required in Chemical Work and General Chemical Manipulation, introducing the subject of Qualitative and Quantitative Analysis. Fuels. -- Analysis of Coal, Coke and other Fuels -- Sampling and Testing for Moisture, Ash, Calorific Value, etc. -- Comparative Heating Value of different Fuels and Relative Efficiency. Water. -- Analysis for Steam Raising and for Paper Making Purposes generally -- Water Softening and Purification -- A List of the more important Water Softening Plant, giving Power required, Weight, Space Occupied, Out-put and Approximate Cost. Raw Materials and Detection of Adulterants. -- Analysis and Valuation of the more important Chemicals used in Paper Making, including Lime, Caustic Soda, Sodium Carbonate, Mineral Acids, Bleach Antichlor, Alum, Rosin and Rosin Size, Glue Gelatin and Casein, Starch, China Clay, Blanc Fixe, Satin White and other Loading Materials, Mineral Colours and Aniline Dyes. Manufacturing Operations. -- Rags and the Chemical Control of Rag Boiling -- Esparto Boiling -- Wood Boiling -- Testing Spent Liquors and Recovered Ash -- Experimental Tests with Raw Fibrous Materials -- Boiling in Autoclaves -- Bleaching and making up Hand Sheets -- Examination of Sulphite Liquors -- Estimation of Moisture in Pulp and Half-stuff -- Recommendations of the British Wood Pulp Association. Finished Products. -- Paper Testing, including Physical, Chemical and Microscopical Tests, Area, Weight, Thickness, Apparent Specific Gravity, Bulk or Air Space. Determination of Machine Direction, Thickness, Strength, Stretch, Resistance to Crumpling and Friction, Transparency, Absorbency and other qualities of Blotting Papers -- Determination of the Permeability of Filtering Papers -- Detection and Estimation of Animal and Vegetable Size in Paper -- Sizing Qualities of Paper -- Fibrous Constituents -- Microscopical Examination of Fibres -- The Effect of Beating on Fibres -- Staining Fibres -- Mineral Matter -- Ash -- Qualitative and Quantitative Examination of Mineral Matter -- Examination of Coated Papers and Colouring Matters in Paper.

CONTENTS OF "THE TESTING OF PAPER"--continued.

Tables. -- English and Metrical Weights and Measures with Equivalents -- Conversion of Grams to Grains and vice versa -- Equivalent Costs perlb., cwt., and ton -- Decimal Equivalents oflbs., qrs., and cwts. -- Thermometric and Barometric Scales -- Atomic Weights and Molecular Weights -- Factors for Calculating the Percentage of Substance Sought from the Weight of Substance Found -- Table of Solubilities of Substances Treated of in Paper Making -- Specific Gravity Tables of such substances as are used in Paper Making, including Sulphuric Acid Hydrochloric Acid, Bleach, Milk of Lime, Caustic Soda, Carbonate of Soda, etc., giving Percentage Strength with Specific Gravity and Degrees Tw. -- Hardness Table for Soap Tests -- Dew Point -- Wet and Dry Bulb Tables -- Properties of Saturated Steam, giving Temperature, Pressure and Volume -- List of Different Machines used in the Paper Making Industry, giving Size, Weight, Space Occupied, Power to Drive, Out-put and Approximate Cost -- Calculation of Moisture in Pulp -- Rag-Boiling Tables, giving Percentages of Lime Soda and Time required -- Loss in Weight in Rags and other Raw Materials during Boiling and Bleaching -- Conditions of Buying and Selling as laid down by the Paper Makers' Association -- Table of Names and Sizes of Papers -- Table for ascertaining the Weight per Ream from the Weight per Sheet -- Calculations of Areas and Volumes -- Logarithms -- Blank pages for Notes.

THE TREATMENT OF PAPER FOR SPECIAL PURPOSES. By L. E. AndÉs. Translated from the German. Crown 8vo. 48 Illustrations. 250 pp. [In the Press.]

Contents.

I., Parchment Paper, Vegetable Parchment. -- The Parchment Paper Machine -- Opaque Supple Parchment Paper -- Thick Parchment -- Krugler's Parchment Paper and Parchment Slates -- Double and Triple Osmotic Parchment -- Utilising Waste Parchment Paper -- Parchmented Linen and Cotton -- Parchment Millboard -- Imitation Horn and Ivory from Parchment Paper -- Imitation Parchment Paper -- Artificial Parchment -- Testing the Sulphuric Acid. II., Papers for Transfer Pictures. III., Papers for Preservative and Packing Purposes. -- Butter Paper -- Wax Paper -- Paraffin Paper -- Wrapping Paper for Silverware -- Waterproof Paper -- Anti-corrosive Paper. IV., Grained Transfer Papers. V., Fire-proof and Antifalsification Papers, VI., Paper Articles. -- Vulcanised Paper MachÉ -- Paper Bottles -- Plastic Articles of Paper -- Waterproof Coverings for Walls and Ceilings -- Paper Wheels, Roofing and Boats -- Paper Barrels -- Paper Boxes -- Paper Horseshoes. VII., Gummed Paper. VIII., Hectograph Papers. IX., Insecticide Papers. -- Fly Papers -- Moth Papers. X., Chalk and Leather Papers. -- GlacÉ Chalk Paper -- Leather Paper -- Imitation Leather. XI., Luminous Papers -- Blue-Print Papers -- Blotting Papers. XII., Metal Papers -- Medicated Papers. XIII., Marbled Papers. XIV., Tracing and Copying Papers -- Iridescent or Mother of Pearl Papers. XV., Photographic Papers -- Shellac Paper -- Fumigating Papers -- Test Papers. XVI., Papers for Cleaning and Polishing Purposes -- Glass Paper -- Pumice Paper -- Emery Paper. XVII., Lithographic Transfer Papers. XIX., Sundry Special Papers -- Satin Paper -- Enamel Paper -- Cork Paper -- Split Paper -- Electric Paper -- Paper Matches -- Magic Pictures -- Laundry Blue Papers -- Blue Paper for Bleachers. XX., Waterproof Papers -- Washable Drawing Papers -- Washable Card -- Washable Coloured Paper--Waterproof Millboard -- Sugar Paper. XXI., The Characteristics of Paper -- Paper Testing.