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3. Control of River Quality, covering river-water quality criteria in relation to waterworks requirements (G. W. HOUGHTON),effects of abstractions and discharges on river-water quality (D. MERCER), and control of water quality (W. F. LESTER, M. LOVETT; R. BRIGGS; K. V. MELBOURNE and G. E. EDEN). 4. The Present State of Knowledge and Problems awaiting Solution, covering research on river management, river regulation, the use of ground water for regulating river flows, pollution, and further research needs in river management (V. K. COLLINGE). The Proceedings provide a substantial contribution to the knowledge of river management, and should prove of value to Water Engineers, Water Authorities, Hydrologists, Water Chemists and others engaged in this field. F.D. S. D. FAUSTand J. V. HUNTER(Editors) : Principles and Applications of Water Chemistry, Proceedings of the Fourth Rudolfs Conference. John Wiley& Sons, Ltd., London&New York. 643 p. 9 × 6 ins. 1967. 100/The book presents the research papers and discussions given at the Fourth Rudolfs Research Conference held at Rutgers University, New Brunswick, New Jersey. Following the somewhat surprising statement in the Preface and the Publishers announcement that "by focussing on the more practical aspects of water chemistry, the contributors hoped to create an awareness that chemical principles can and should be applied to the technology of water and wastewater treatment", the papers presented are in fact all of high scientific standard, as may be expected from the standing of the contributors as members of University research organizations. The volume is accordingly to be commended to all who are interested in the chemistry of water from both the scientific and the technological points of view. "Water chemistry" is described as an applied chemistry, which is concerned with water and wastewater treatment, with ground and surface waters, and with the oceans, but the volume "does not pretend to offer solutions to everyday problems of the chemistry of water and wastewater treatment". The Proceedings comprise six "Principle" papers, each of which is followed by two or more "Application" papers. The "Principle" papers given comprise the following, and in the case of papers (5) and (6), of particular interest to Hydrologists, they are followed by the relative "Application" papers: 1. Reaction Rates in Solution (H. EYRING and E. M. EYRING)
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2. Physical Adsorption on Solids (L. I. OsIPOW) 3. Electrical Phenomena at Surfaces (M. BIER and F. C. COOPER) 4. Factors determining Chemical Oxidation and Reduction in Solution (F. R. DUKE) 5. Mineralogic Factors in Natural Water Equilibria (O. P. BRICKER and O. M. GARRELS) The Formation and Behaviour of Hydroxyapatite (G. CORSARO and S. SUTHERLAND)
Ion Exchange in Solution (J. WALDEN and H. P. GREGOR) Geochemical Control of Solubility of Aqueous Silica (W. L. POLZER) 6. Metal Ions in Aqueous Solutions (W. STUMM) Chemical Equilibria and Kinetic Properties of Manganese in Natural Waters (J. J. MORGAN) Equilibrium Chemistry of Iron in Ground Water (J. D. HEM). F.D.
Water Resources Newsletter No. 7 of October, 1966. Australian Water Resources Council, Canberra, A.C.T. As in the case of earlier numbers of this series, Newsletter No. 7 contains much of interest not only to hydrologists and hydrogeologists in Australia but also in other continents as well. Part of the issue is devoted to underground water investigations in the various States of Australia. Much drilling has been carried out in arid and semi-arid areas under a wide range of geological and other conditions, providing records of great interest to hydrogeologists. An account is given also of the proceedings of the ECAFE 7th Regional Conference on Water Development; it was the first Regional Conference of ECAFE to be held in Australia, and it was attended by 100 delegates from 18 countries, apart from representatives from UN specialized agencies and non-governmental international bodies. Australia as host country was able to present a large delegation of over 40 senior officers from water authorities and research institutions. In his opening address the Minister for National Development, the Hon. David Fairbairn, referred to the devastating effects of the recent drought in Australia; current losses of animals were estimated at 15½ million sheep and 1360000 cattle; there was also a large decline in the wheat crop, amounting to 100 million bushels in New South Wales alone. A brief account is given also of the symposium entitled "An Exposure on Drought" held at Sydney in August, 1966. In his opening address the N.S.W. Minister for Conservation said it was estimated that the recent