get better and better at it.
  The second exercise is to give a practical experiment in medical radiesthesia. We can detect the radiations of particular tissues. To determine if a organ is unhealthy it seems that some time should be spent getting to know that frequency of radiation, then we can determine if an organ is diseased or about to become so. This second exercise needs a hunk of liver from a chicken or from a cow, three bowls, and three cardboard covers that cover the bowls. Place the liver in one of the bowls. For this it is best to have someone else shuffle the bowls, as you can feel the weight difference. (You have a good friend who will help you shuffle raw liver in a bowl) Determine with what ever instrument you have chosen, which bowl has the liver. Over time you will be able to detect liver vibrations. While these are dead cells the atomic structure is intact as long as the liver is fresh. Our attempt to see if we could determine how long liver tissue had been dead was a bit gross and had to be tossed before we could get any real idea.
Dowsing Clips
http://www.hlla.com/reference/dowsing.html
  Dowsers have frequently conducted experiments at dowsing conventions in which they passed electricity through ground, and found they could easily pick up the resulting electromagnetic energies. Scientists have identified three sensors that can pick up this electromagnetic information. One is near or in the pituitary gland (in the brain), and there is one on each adrenal gland (near each kidney). The theory is that by comparing the information from these three internal sensory points, the brain can determine both the distance and direction of an electromagnetic-source without our conscious awareness--much in the way the brain uses the two eyes to calculate how far away an object is, another thing the brain does without us consciously thinking about it.

http://www.connect.ab.ca/~tylosky/--
  Divining rods and all common dowsing devices, are the simplest forms of electroscopes. The bent rod for example is just a variation of Gilbert's straw needle electroscope. The divining rods are charged with static electricity from the dowser's own body. This static electricity can be seen quite adequately with a simple millivolt meter. This voltage is measured between the hands of the dowser, to measure this voltage accurately a diff amp should be used at the input to the voltmeter, "this eliminates stray signals which are common to both hands". The amount of voltage will vary depending on the person. A good dowser will have a high reading, "above 100 mv" while a poor dowser may read as low as,"0 mv.". For males the right hand is usually a negative polarity, and the left hand is positive in polarity. these polarities are usually reversed in females.