The sheer amount of material on water conservation threatens shortly to engulf the interested reader. The pollution problem certainly is one of the largest confronting mankind today, but one begins to wonder what use it is to transform our libraries into an appropriate setting for the Ancient Mariner's piteous cry, and then do little or nothing. However, before drowning in inky seas, there are a few works so far which should not be overlooked, and Mr. Briggs' is one. His conservation data and suggestions are no less or more comprehensive than any previously intended for a non-specialist public; what makes his book stand out is the way in which he has tied the problems in with the exciting contemporary activity in oceanography, and assembled a survey of everything from Cousteau's explorations to deepsea mining, to the aesthetic and religious connotations of water around the world, to the grandiose plans for international super-TVA's. The result is a good introduction designed to stimulate the genuine, creative involvement this entire subject desperately requires.