Irrigation Principles and Practices

THE practice of irrigation is so widespread in all parts of the world, there being more than 200 million acres of land artificially treated with supplies of water in the five continents, that it is a little surprising to find in a book dealing with the subject of irrigation under a general title, without qualification of any kind, a complete absence of reference (apart from a few photographs of primitive appliances in Oriental countries) to processes and methods other than those to be found in a group of some seven or eight of the United States lying to the west of long. 100 ° W. and embracing an area of about twenty million acres under treatment? say, a tenth part of the whole. While this localisation detracts somewhat from the serviceability of the book to the general reader, it does not, of course, invalidate it as a useful compendium of information on methods of irrigation in that particular region and, indeed, within its purview, it is an admirable guide.Irrigation Principles and Practices.By Prof. Orson W. Israelsen. (Wiley Agricultural Engineering Series.) Pp. xiv + 422 + 8 plates. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1932.) 31s. net.