The book describes the general underground water system circulating within the Earth's crust, as seen through radiesthesical research accomplished by the author during the last forty five years. 

      It also supplies orientation for people interested in radiesthesia, specially in searching underground water, including instruments, principles, methods and equations to predict depth and productivity of wells. 

      Finally, it displays evidences about the influence of underground water on plants, animals and man itself, and discusses the probable effects of wells and of water extracting on the environment. 
You may find in its 98 pages, readily comprehensible information on the probable origin of water, how it comes up from the deep of the earth crust, irrigates the subsoil and the soil, issues in fountains and marshes feeding brooks, rivers and seas,  originates special geological ocurrences, turns possible life on earth and interferes in man's health. The book contains twenty nine, mostly colored illustrations.