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are appreciating the benefits to be derived from having an assured amount of water. It will be necessary, however, for these small plants to multiply many times before the construction of large works can be undertaken with fair assurance of financial success. When by the multiplication of small pumping plants in various localities a considerable body of successful irrigators has been established, it will be possible to construct great canals from the larger rivers, bringing water to thousands of acres of rich lands, and to dispose of water rights at remunerative prices. The small pumping plants may therefore be considered as the necessary forerunners of more economical and efficient systems which will render possible a dense population along the fertile valleys where now farming is precarious and often unprofitable.