Abstract
In his discussion concerning human magnetoreception, Baker (this volume) cites the work of Harvalik (1978) on human dowsers as an example of prior work suggesting a magnetic sense in humans. This is a poor example. Harvalik claims to have measured the sensitivity of his subjects by passing direct electric current through the ground between the copper electrodes separated by about 20 m. With the current on, the dowsers walked between the electrodes and gave signals and claimed to detect the small field present. In one publication (Harvalik, 1975), he built and used a “randomizer” to make things double-blind. In several other papers published in The American Dowser (Harvalik, 1973, 1974,1976), he describes localizing the site of the receptors in the pineal and adrenal glands and measuring field sensitivities down to an astounding 0.00001 γ (10 −14 Tesla).
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© 1985 Plenum Press, New York
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Kirschvink, J.L. (1985). A Cautionary Note on Magnetoreception in Dowsers. In: Kirschvink, J.L., Jones, D.S., MacFadden, B.J. (eds) Magnetite Biomineralization and Magnetoreception in Organisms. Topics in Geobiology, vol 5. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0313-8_33
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