25 



Varieties of Commercial Flax — Retting of Flax — Lustrous Linen— Use of Linen as a Textile 

 —Characteristics of the Fibre— Structure— Action of Reagents— Physical Properties— Com- 

 position— Flax Wax. Ramie : Source— Preparation— History— Properties— Composition. 

 Jute and other Fibres. Brush Fibres Vegetable Downs and Upholstery Fibres.— 



Bombax Cottons— Kapok— Ochroma Down— Kumbi or Galgal— Vegetable Siik— Airclepias 

 Cotton— Calotropis Down— Beaumantia Down— Other Vegetable Suks— Vegetable Wool— 

 Tillandsia Fibre— Vegetable Horsehair. Index. 



Ring Spinning. 



THE RING SPINNING FRAME FOR OVERLOOKERS 

 AND STUDENTS. By N. Booth. Crown 8vo. 76 pages. 

 Price 3s. net. (Post free, 3s. 3d. home ; 3s. 6d. abroad.) [yust published. 



Collieries and Mines. 



RECOVERY WORK AFTER PIT FIRES. By Robert 



Lamprecht, Mining Engineer and Manager. Translated from the 

 German. Illustrated by Six large Plates, containing Seventy-six 

 Illustrations. 175 pp., demy 8vo. Price 10s. 6d. net. (Post free, 

 10s. lOd. home; lis. abroad.) 

 VENTILATION IN MINES. By Robert Wabxer, Mining 

 Engineer. Translated from the German. Royal Svo. Thirty Plates 

 and Twenty-two Illustrations. 240 pp. Price lOs. 6d. net. (Post free,. 

 lis. home ; lis. 3d. abroad.) 



HAULAGE AND WINDING APPLIANCES USED IN 

 MINES. By Carl Yolk. Translated from the German. 

 Royal Svo. With Six Plates and 148 Illustrations. 150 pp. Price 

 8s. 6d. net. (Post free, 9s. home ; 9s. 3d. abroad.) 



Contents. 



Haulage Appliances— Ropes— Haulage Tubs and Tracks— Cages and Winding Appliances- 

 Winding Engines for Vertical Shafts— Winding without Ropes— Haulage in Levels and 

 Inclines— The Working of Underground Engines— Machinery for Downhill Haulage. 



THE ELECTRICAL EQUIPMENT OF COLLIERIES. By 



W. Galloway Duncan, Electrical and xMechanical Engineer, Member 

 of the Institution of Mining Engineers, Head of the Goxernment School 

 of Engineering, Dacca, Ind'ia ; and David Penman, Certificated Colliery 

 xManager, Lecturer in Mining to Fife County Committee. Demy Svo. 

 310 pp. 155 Illustrations and Diagrams. Price 10s. 6d. net. (Post 



free, lis. home ; Us. 3d. abroad.) 



Contents. 

 General Principles, Magnetism, Units, Ceils, etc.— Dynamos and Motors— Trans= 

 mission and Distribution of Power-Prime Movers-Lighting by Electricity-lnitial 

 Outlay and Working Cost of Electrical Installations— Electricity Applied to Coal= 

 cutting- Electric Haulage, Winding, and Locomotives— Electric Pumps and Pump= 

 ing—Electric= Power Drills and Underground Coal Conveyers— Typical Colliery 

 Electrical Installations-Miscellaneous Applications of the Electric Current-Com- 

 parison of the Different Modes of Transmitting Power— Dangers Occurring from the 

 Use of Electricity in Colleries— Appendix : Questions suitable for students preparing tor 

 colliery managers' examinations — Index. 



Dental Metallurgy. 



DENTAL METALLURGY : MANUAL FOR STUDENTS 



AND DENTISTS. By A. B. Griffiths, Ph.D. Demy 



8vo. Thirty-six Illustrations. 200 pp. Price 7s. 6d. net. (Post free, 



7s. lOd. home; 8s. abroad.) 



Contents . 



Introduction— Physical Properties of the Metals— Action of Certain Agents on Metals— 

 AUovs— Action of Oral Bacteria on Alloys— Theory and Varieties of Blowpipes— Fluxes- 

 Furnaces and Appliances— Heat and Temperature— Gold— Mercury— S.lver-Iron-Copper— 

 Zinc— Magnesium— Cadmium— Tin— Lead — Aluminium — Antimony— Bismuth — Palladium— 

 Platinum— Iridium— Nickel— Practical Work— Weights and Measures. 



