Gems and Gem Minerals. Oliver Cummings Farrington

1904 The Journal of geology  
The author lays much stress upon the fact that problems arise from irrigation that cannot be successfully handled by individuals or even by states. The setting apart of forest lands for the regulation of the water supply; the building of reservoirs for impounding the headwaters of streams; the adjusting of water rights on streams that cross state lines; the establishing of experiment stations; and the investigation of a wide range of conditions of water supply and the adaptation of crops to
more » ... ion of crops to climate and soil-these are subjects for an authority which can act in a disinterested way for all concerned. As the book is intended for popular reading, it is in no sense a manual, though the practical man will find that fundamental principles have been so clearly stated, and happily illustrated by photographs and diagrams, that he can judge intelligently concerning his own particular conditions, and avoid expenditure on ill-advised schemes. The manner in which the author deals with the questions of artesian water, the building of dams and ditches, the use of windmills as a source of power, the methods of measuring water, and the means of conducting water to land in a great variety of situations, must appeal to the common-sense of every practical farmer. Sixty-two plates and ninety-four diagrams admirably supplement the lucid text. Among the cartograms are a number that show in a striking way the relative size of western states as compared with the Atlantic states, and are well calculated to impress the reader with the vastness of the area with which the book deals. If the book were supplied with definite references to the wide literature of the field, it
doi:10.1086/621129 fatcat:u6hg2cjogzfwdbq3vyghszj5ei