Improperly Chosen Raw Material or Improper Mixtures -- Wrong Treatment of the Material in Washing, Carbonisation, Drying, Dyeing and Spinning -- Improper Spacing of the Goods in the Loom -- Wrong Placing of Colours -- Wrong Weight or Width of the Goods -- Breaking of Warp and Weft Threads -- Presence of Doubles, Singles, Thick, Loose, and too Hard Twisted Threads as well as Tangles, Thick Knots and the Like -- Errors in Cross-weaving--Inequalities, _i.e._, Bands and Stripes -- Dirty Borders -- Defective Selvedges -- Holes and Buttons -- Rubbed Places -- Creases -- Spots -- Loose and Bad Colours -- Badly Dyed Selvedges -- Hard Goods -- Brittle Goods -- Uneven Goods -- Removal of Bands, Stripes, Creases and Spots. #SPINNING AND WEAVING CALCULATIONS,# especially relating to Woollens. From the German of N. REISER. Thirty-four Illustrations. Tables. 160 pp. Demy 8vo. 1904. Price 10s. 6d. net. (Post free, 10s. 10d. home; 11s. abroad.) #Contents.# Calculating the Raw Material -- Proportion of Different Grades of Wool to Furnish a Mixture at a Given Price -- Quantity to Produce a Given Length -- Yarn Calculations -- Yarn Number -- Working Calculations -- Calculating the Reed Count -- Cost of Weaving, etc. #WATERPROOFING OF FABRICS.# By Dr. S. MIERZINSKI. Crown 8vo, 104 pp. 29 Illus. Price 5s. net. (Post free, 5s. 3d. home; 5s. 4d. abroad.) #Contents.# Introduction -- Preliminary Treatment of the Fabric -- Waterproofing with Acetate of Alumina -- Impregnation of the Fabric -- Drying -- Waterproofing with Paraffin -- Waterproofing with Ammonium Cuprate -- Waterproofing with Metallic Oxides -- Coloured Waterproof Fabrics -- Waterproofing with Gelatine, Tannin, Caseinate of Lime and other Bodies -- Manufacture of Tarpaulin -- British Waterproofing Patents -- Index. #HOW TO MAKE A WOOLLEN MILL PAY.# By John MACKIE. Crown 8vo. 76 pp. Price 3s. 6d. net. (Post free, 3s. 9d. home; 3s. 10d. abroad.) #Contents.# Blends, Piles, or Mixtures of Clean Scoured Wools -- Dyed Wool Book -- The Order Book -- Pattern Duplicate Books -- Management and Oversight -- Constant Inspection of Hill Departments -- Importance of Delivering Goods to Time, Shade, Strength, etc. -- Plums. (_For "Textile Soaps and Oils" see p. 7._) #DYEING, COLOUR PRINTING, MATCHING AND DYE-STUFFS.# #THE COLOUR PRINTING OF CARPET YARNS.# Manual for Colour Chemists and Textile Printers. By David PATERSON, F.C.S. Seventeen Illustrations. 136 pp. Demy 8vo. Price 7s. 6d. net. (Post free, 7s. 10d, home; 8s. abroad.) #Contents.#