Natural Sources of Power. Robert S. Ball, B.Sc., A.M.Inst.C.E. With 104 Diagrams and Illustrations. Ex. Crown 8vo. 7/6 net.
Pumps
The Efficiency of Pumps and Ejectors. E. C. Bowden-Smith, M.I.Mech.E., etc. Late Egyptian Civil Service. Demy 8vo. Illustrated. 14/6 net.
Centrifugal Pumps. Louis C. Loewenstein, E.E., Ph.D., and Clarence P. Crissey, M.E. 320 Illustrations. 26/- net.
Contents.—Theory of Centrifugal Pumps. Consumption of Power and Efficiency. The Calculation of Impeller and Guide Vanes. Design of Important Pump Parts. Types of Centrifugal Pumps. Testing of Centrifugal Pumps.
Iron, Steel, and other Metals
An Introduction to the Study of Physical Metallurgy. Walter Rosenhain, B.A., D.Sc., F.R.S., Superintendent, Metallurgy Department of the National Physical Laboratory. With 32 Plates and 131 Illustrations in the Text. Demy 8vo. 12/6 net. ([See p. 49.])
The Basic Open-Hearth Steel Process. Carl Dichmann. Translated and Edited by Alleyne Reynolds. 2nd Imp. Demy 8vo. Numerous Tables and Formulæ. 12/6 net.
Iron and Steel. An Introductory Text-Book for Engineers and Metallurgists. (Outlines of Industrial Chemistry.) O. F. Hudson, M.Sc., A.R.C.S., Lecturer on Metallography, Birmingham University, with a Section on Corrosion by Guy D. Bengough, M.A., D.Sc., Lecturer in Metallurgy, Liverpool University; Investigator to the Corrosion Committee of the Institute of Metals. Demy 8vo. 8/- net.