24 



make, and for whatever kind of cloth required. A comprehensive summary is also included of' 

 the various yarns and methods of numbering them, as well as a few useful hints and a number 

 of coloured diagrams for mandarin weavings. The book is printed in bold, legible type, on 

 good paper, has a copious index, and is well and strongly bound." Ashton-under-Lyne herald. 



" In dealing with the complicated parts of various classes of power-looms, the writer, who is 

 one of the professors at the Royal Weaving School of Asch, brings to the work a thorough 

 knowledge of the subject, and, what is of great value, he has the gift of communicating his 

 knowledge in a way which is easily understood. The smallest details of loom-setting are 

 entered into, and a full explanation of problems, which are a source of anxiety to many en- 

 gaged in overlooking, is given. Students wHl find the work an admirable text-book, and all 

 who are interested in weaving will see in it a valuable addition to the literature on this subject. 

 . . . The book is in small compass, and is crowded with valuable information." Bradford 

 Observer. 



" A short and valuable review is given of the power-loom as a whole, and this is followed by 

 a description of the mounting of the different parts of the machinery, with their advantages 

 and defects. In preference to illustrations the readers being presumed to already possess a 

 suitable acquaintance with the subject the various systems of numbering yarn are explained, 

 .together with certain calculations useful in weaving. . . . How power-loom weaving has 

 advanced in recent years is explained at some length in this book, which will prove invaluable 

 to intending students of practical weaving, and will also be found very useful to those whose 

 knowledge of the subject is more, advanced, to whom the calculations, which give evidence 

 of careful study, will frequently come in handy." Stockport Advertiser. 



COLOUR: A HANDBOOK OF THE THEORY OF 

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

 Coloured Plates and Seventy-two Illustrations. 160 pp. 1900. 

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

 strictly net, post free. 



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 oi 

 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, and will be of great utility to those for 

 whom it is primarily intended." 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. 



" We have found the book very interesting, and can recommend it to all who wish to master 

 the different aspects of colour theory, with a view to a practical application of the knowledge so 

 gained." Chemist and Druggist. 



" Mr. Hurst's Handbook on the Theory of Colour will be found extremely useful, not only to. 

 the art student, but also to the craftsman, whose business it is to manipulate pigments and 

 dyes." Nottingham Daily Gtiardian. 



" This is a workmanlike technical manual, which explains the scientific theory of colour in. 

 terms intellig ble to everybody. ... It cannot but prove both interesting and instructive to all) 

 classes of workers in colour." Scotsman. 



