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.

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. 10d. home; 8s. abroad.)

Contents.

Introduction -- Physical Properties of the Metals -- Action of Certain Agents on Metals -- Alloys -- Action of Oral Bacteria on Alloys -- Theory and Varieties of Blowpipes -- Fluxes -- Furnaces and Appliances -- Heat and Temperature -- Gold -- Mercury -- Silver -- Iron -- Copper -- Zinc -- Magnesium -- Cadmium -- Tin -- Lead -- Aluminium -- Antimony -- Bismuth -- Palladium -- Platinum -- Iridium -- Nickel -- Practical Work -- Weights and Measures.

Engineering, Smoke Prevention and Metallurgy.

THE PREVENTION OF SMOKE. Combined with the Economical Combustion of Fuel. By W. C. Popplewell, M.Sc., A.M. Inst., C.E., Consulting Engineer. Forty-six Illustrations. 190 pp. Demy 8vo. Price 7s. 6d. net. (Post free, 7s. 10d. home; 8s. 3d. abroad.)

Contents.

Fuel and Combustion -- Hand Firing in Boiler Furnaces -- Stoking by Mechanical Means -- Powdered Fuel -- Gaseous Fuel -- Efficiency and Smoke Tests of Boilers -- Some Standard Smoke Trials -- The Legal Aspect of the Smoke Question -- The Best Means to be adopted for the Prevention of Smoke -- Index.