25 APRIL 1914, Page 11

STUDIES IN WATER SUPPLY.

Studies in Water Supply. By A. C. Houston. (Macmillan and Co. 5s. net.)—Dr. Houston has been engaged for more than eight years as Director of Water Examination under the Metropolitan Water Board. In this valuable monograph he presents an epitome of his researches, which were previously scattered through a number of reports and papers. His experience must be of the greatest use to others engaged on similar tasks. "London possesses the largest waterworks undertaking in the world, and the Metropolitan Water Board, by instituting an elaborate system of water examination, by providing facilities for carrying out many important re- searches, and generally by looking at the whole subject of water supply from an Imperial point of view, has shown itself fully alive to its serious responsibilities." From a non- technical point of view, Dr. Houston's most important con- clusion is that, "even if we disregard all humanitarian considerations, the provision of a pure water supply is a sound financial proposition."