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COLOUR: A HANDBOOK OF THE THEORY OP 

 COLOUR. By GEORGE H. HURST, F.C.S. With Teit 



Coloured Plates and Seventy-two Illustrations. 160 pp. Demy 8vo. 

 1900. Price 7s. 6d. ; India and Colonies, 8s. ; Other Countries, 8s. 6d. ; 

 strictly net. 



Contents. 



Chapters I., Colour and Its Production. Light, Colour, Dispersion of White Light,, 

 Methods of Producing the Spectrum, Glass Prism and Diffraction Grating Spectroscopes, The 

 Spectrum, Wave Motion of Light, Recomposition of White Light, Hue, Luminosity, Purity 

 of Colours, The Polariscope, Phosphorescence, Fluorescence, Interference. II., Cause of 

 Colour in Coloured Bodies. Transmitted Colours, Absorption Spectra of Colouring 

 Matters. III., Colour Phenomena and Theories. Mixing Colours, White Light from 

 Coloured Lights, Effect of Coloured Light on Colours, Complementary Colours, Young- 

 Helmholtz Theory, Brewster Theory, Supplementary Colours, Maxwell's Theory, Colour- 

 Photography. IV., The Physiology of Light. Structure of the Eye, Persistence of Vision, 

 Subjective Colour Phenomena, Colour Blindness. V., Contrast. Contrast, Simultaneous- 

 Contrast, Successive Contrast, Contrast of Tone. Contrast of Colours, Modification of Colours 

 by Contrast, Colour Contrast in Decorative Design. VI., Colour in Decoration and 

 Design. Colour Harmonies, Colour Equivalents, Illumination and Colour, Colour and 

 Textile Fabrics, Surface Structure and Colour. VII., Measurement of Colour. Colour 

 Patch Method, The Tintometer, Chromometer. 



Press Opinions. 



"This useful little book possesses considerable merit." Birmingham Post. 



" It will be found to be of direct service to the majority of dyers, calico printers and colour 

 mixers, to whom we confidently recommend it." Chemical Trade Journal. 



" It is thoroughly practical, and gives in simple language the why and wherefore of the many 

 colour phenomena which perplex the dyer and the colourist." Dyer and Calico Printer. 



TEXTILE RAW MATERIALS AND THEIR CON- 

 VERSION INTO YARNS. (The Study of the Raw 

 Materials and the Technology of the Spinning Process.) Text-book for 

 Textile, Trade and Higher Technical Schools. By JULIUS ZIPSER. 

 Translated from German by CHARLES SALTER. 302 Illustrations. 

 480pp. Demy 8vo. 1901. Price 10s. 6d. ; India and Colonies, 11s.;. 

 Other Countries, 12s. ; strictly net. 



Contents. 



Introduction. 



PART l.-The Raw Materials Used in the Textile Industry. 



GROUP I. MINERAL RAW MATERIALS. Asbestos Glass Metals. 



GROUP II. VEGETABLE RAW MATERIALS. Seed Fibres Cotton Bombax Wool 

 Asclepias Wool Poplar, Cotton Grass and Bulrush Wool Stem Fibres Flax Hemp Jute 

 Nettle Fibres Sunn Hemp Leaf Fibres New Zealand Hemp Manila Hemp Sisal and, 

 Domingo Hemp Aloe Fibre Pineapple Fibre Vegetable Wool Fruit Fibres Cocoanut 

 Fibre Other Vegetable Raw Materials employed in Weaving Straw Wood Cane 

 Caoutchouc. 



GROUP III. ANIMAL RAW MATERIALS. Animal Wool and Hair Sheep's Wool Goat 

 Wool Camel Wool Llama and similar Wools Cow Hair Poodle Hair Hare, Rabbit, Cat 

 and Beaver Fur Horse Hair Bristles Silk Natural Silk Artificial Silk Byssus Silk- 

 Detection and Estimation of Textile Raw Materials in Yarns and Fabrics Characteristics of 

 Mineral Raw Materials Detecting and Methods of separating Vegetable and Animal Raw 

 Materials in general The Combustion Test The Mandarin Test The Picric Acid Test The 

 Sulphuric Acid Test The Alkali Test Differentiation of Animal and Vegetable Fibres ia 

 detail Characteristics of Cotton Characteristics of Flax Characteristics of Sheep's Wool 

 Characteristics of True Silk Characteristics of Artificial Silk Determining the Constituents of 

 Textile Fabrics The Detection of Cotton in Linen Fabrics The Detection of Cotton in 

 Woollen Fabrics The Detection of Cotton in Silk Fabrics The Detection of Wool in Silk 

 Fabrics The Detection of Wild Silk in True Silk Fabrics The Detection of Artificial Silk in. 

 Silk Fabrics The Detection of Byssus Silk in Silk Fabrics. 



PART II. The Technology of Spinning or the Conversion of Textile Raw 

 Materials into Yarn. 



Spinning Sequence of Operations in Spinning General Observations on the Machinery 

 and Process of Spinning Fine Spinning Machines Requisite Properties for a Well-spun 

 Thread. 



GENERAL REVIEW OF THE VARIOUS BRANCHES OF 

 THE SPINNING PROCESS. 



GROUP I. SPINNING VEGETABLE RAW MATERIALS. Cotton Spinning Preparatory 

 Processes Mixing Opening and Cleaning Carding Combing Drawing and Doubling 

 Roving Roving Frames producing a Permanent Twist-r-Machines producing Temporary Twist 

 Fine Spinning The Throstle or Water Frame The Mule Frame Supplementary Treatment : 

 Finishing Finishing Processes producing no change in the Character of the Yarn Converting 

 Yarns into New Forms Additional Finishing Processes Packing Installation of a Cotton 

 Mill Humidifiers Spinning Waste Cotton and Waste Cotton Yarns Preliminary Operations- 



