Abstract Molecular Physics, their Transforms and Thermal Diffuse Scattering. By Jose Luis and Marisa Amorós. (John Wiley & Sons, 1968.) [Pp. 479.] Price £10 10s. od. The Radiation Belt and Magnetosphere. By Wilmot N. Hess. (Blaisdell Publishing Company, Waltham, Mass., U.S.A., 1968.) [Pp. 548.] Price $16.50. Théorie du Magnétisme. By A. Herpin. (Presses Universitaires de France, 1968.) [Pp. 882.] Applied Optics: A Guide to Modern Optical Design. By L. Levi (Wiley, 1968.) [Pp. xviii+620.] Price £8 18s. Od. Spectral Properties of Disordered Chains and Lattices. By J. HORI. (Pergamon, 1968.) [Pp. 229.] Price £3 15s. Od. Mathematical Tools for Modern Physics. By J. F. Schuh. (Philips Technical Library, 1968.) [Pp. 456.] Price £6 18s. Od. Problems in Solid State Physics. Edited by H. J. Goldsmid. (London : Pion Ltd., 1968.) [Pp. 466.] Price £4 4s. Od. Fundamentals of Quantum Optics. By J. R. Klauder and E. C. G. Sudarshan. (Benjamin, 1968.) [Pp. 279.] Price $13.50. Statistical Theory of Signal Detection. Second edition. By Carl W. Helstrom. (Pergamon Press, 1968.) [Pp. 467.] Price £4 10s. Od. 14th International Conference on High Energy Physics. Vienna, 1968. Edited by J. Peentki and J. Steinberger. (Geneva : European Organization for Nuclear Research, 1968.) [Pp. 527.] Price Sw. Fr. 50. A dvances in Particle Physics. Vol.I. Edited byR.L.CooL and R. E. Maeshak. (Interscience, 1968.) [Pp. 497.] Price £9 0s. Od. Lectures in Theoretical High Energy Physics. Edited by H. H. Aly. (John Wiley, 1968.) [Pp. 440.] Price £6 15s. Od. Annual Review of Physical Chemistry. Vol. 19. Edited by H. Eyeing. (Annual Reviews, Inc., 1968.) [Pp. 645.] Price $9.00. Soft X-Ray Band Spectra and the Electronic Structure of Metals and Materials. Edited by Derek J. Fabian. (Academic Press, 1968.) [Pp. 382.] Price £5 5s. Od. Optical Physics. By S. G. Lipson and H. Lipson. (Cambridge University Press, 1969.) [Pp. xiii + 494.] Price £3 15s. Od. The CP Puzzle. By P. K. Kablr. (Academic Press, 1968.) [Pp. 137.1 Price £2 0s. Od. Physics of Negative Viscosity Phenomena. By Victor P. Starr. (McGraw-Hill, 1968.) [Pp. 256.1 Price £4 13s. Od. Grundlagen der Mathernatik I. Second edition. By D. Hilbert and P. Bernays. (Springer-Verlag, 1968.) [Pp. 473.] Price DM 68,—. Fundamentals of Electricity and Magnetism. Second edition. By Arthur F. Kip. (McGraw-Hill, 1969.) [Pp. 630.1 Price £4 9s. Od. Vorträge über Supraleitung. By K. Mendelssohn et al. (Base1 : Birkhäuser Verlag : 1968.) [Pp. 208.1 Price Sw. Fr. 26.—. The Education of Physicists for Work in Industry. Proceedings of an International Seminar held at Eindhoven, The Netherlands, 2-6 December 1968. Edited by G. DIEMER and J. H. EMCK. (Centrex Publishing Company, 1969.) [Pp. 55.] Mathematical Methods in Solid State and SuperJiuid Theory. Edited by R. C.clark and G. H. Derrick. Scottish Universities’ Summer School 1967. (Oliver & Boyd, 1969.) [Pp. 400.1 Price : hardback £7 7s. Od.; paperback £3 3s. Od. Progress in Nuclear Physics. Vol. 10. Edited by D. M. Brink and J. H. Mulvey. (Pergamon, 1969.) [Pp. 390.1 Price £7 10s. Od.