Excerpts from a lecture by Mr. Hans Danner von Hagen in London, which was published in the June 1938 issue of the "Journal of the British Society of Dowsers".
In what was then German Southwest Africa, all known cases of cancer were examined in a hamlet founded by several families. The investigations of Mr. Dennert, who had 30 years of experience as a dowser, showed that seven farms were situated above water-veins and that each cancer case slept directly above one of these water-veins. After his return to Europe, he investigated -together with Dr. Heinrich- whether it is possible to prove any connection between "earth rays" and cancer and whether these earth rays have an electrical or electromagnetic character.
In 1932, Dr. Jenny from Aargau (Switzerland) agreed to conduct a study with the two physisist. In doing so, they specifically selected interference zones, which are subsequently referred to as zone A. They placed a small wooden frame (approx. 1.2 x 1.2 meters) on these interference zones, which marked the marked area and fenced it off to ¾.
After that, several elongated wooden cages were built and placed in the wooden fence in such a way that one half of the wooden cages were placed above zone A and the other half on a "neutral" area, called zone B. Mice were then placed in the cages, making sure that their food was placed at the end of zone A.

Soon it was noticed that the mice never crossed the center line of the wooden cage to move from the neutral to the "radiant" zone; apart from the fact to go quickly to the other side to get food. They completely avoided staying in zone A.

Further tests were performed with mice placed in two cages; one over zone A, another over zone B (neutral). When the cages were turned 180° on their own axis, the mice escaped, but not without having quickly transported their young to the neutral zone.
Other investigations showed that in contrast to the mice in the "neutral zone", the mice in the "contaminated" zone had no offspring. Moreover, one year after the start of this test series, it was found that 13% of the mice kept above the contaminated zone developed cancer, while those in the neutral zone were spared. This test series was then further extended by brushing all mice in both cages with "cancer tar" behind the ears. 100%, i.e. all mice kept in zone A developed cancer, while only 17% of the mice in zone B were affected.

Experiments with plants were also carried out. Half of the plant beds were planted over zone A and half over zone B. The plants in zone B bloomed and produced fruit after a short time, whereas the plants in zone A died successively.
After further studies, Mr. Dannert was invited to a special department of the Kaiser Wilhelm Institute in Dortmund to conduct further experiments. After the end of the first year of the new experiments with mice, it was found that of 123 animals, exactly 100 mice either died or had to be killed because they were afflicted with severe cancerous tumors. Practically identical comparisons could be made with the data obtained from the experiments in Switzerland.
During the second year supplementary experiments were carried out in which both blood values and body weight of the animals were measured: Every 4 weeks the animals were weighed and their hemoglobin content was tested. The older mice in zone A showed rapid weight loss and reductions in hemoglobin levels. Later, the younger mice above the watercourse (zone A) also showed considerable weight loss and reductions in hemoglobin levels. All mice in zone B were completely healthy and showed no weight loss or reduction in hemoglobin levels.
Third year tests were performed by separating both young and older mice and then examining them for cancer. It was then found that the younger mice were significantly less susceptible to cancer than the older mice. 13% of the older animals showed signs of cancer.
Similar tests with plants showed that 48 hours after planting, 51% of the plants in zone A grew less than the seedlings in zone B.

Experiments with tadpoles were also carried out, with exactly 300 specimens. 150 of them were placed in a container in which sand, marsh plants and water were added. This container was then placed in Zone A. The other 150 tadpoles were treated in exactly the same way and placed in zone B. The next day it was found that all tadpoles in zone A were sick and died four days later.
Those in zone B were completely healthy. These 150 tadpoles were then divided into two groups of 75 specimens each and moved into clean containers, which in turn were equipped with sand, swamp plants and water. One of these containers was then placed in Zone A and the other in Zone B. The results were virtually identical to the previous study.
Leeches were subjected to a similar test arrangement, whereby an absolutely strange phenomenon was observed.

Those in zone A made movements with their bodies that corresponded to the frequency curve of the radiations: they seemed to "dance" with the radiations. They changed their movements when the frequencies also changed. On the third day, a large number of leeches held in zone A died.
"As a result of all these experiments, it has been proven that animals and plants are affected by these "cancer rays".
These explanations, which were published more than 70 years ago, are certainly of great interest as they clearly provide a scientific explanation for so-called "cancer houses" and "cancer sites".
We advise you to contact a competent dowser before moving in or building a house.
>• summary: Earth radiation
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