How To Dowse (Experimental & Practical Radiesthesia)

The first part of this book consists of twenty-one lessons, each followed by a number pf practical exercises, and deals with the subject in all its aspects, except the medical, such as instruments used, the effect of amplifiers, samples and colours, the detection of water, minerals, telluric emissions (earth rays) and the more recondite subjects of detection on plans and teleradiesthesia.