purifying water using shredded horseradish-how?

[Richard Silbiger PhD]

: Another is quartz crystals.  Boil the quartz first in 
: salt water then add to the drinking water ( the crystals
: not the salt water).  These perform as ion exchangers.
: Regenerate the crystals on occasion in a salt 
: solution.  New age magic, scientific explanation.
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Brain damage is what we had in mind all along.  Chromosome damage
is just gravy.  -Steward Brand- The Last Whole Earth Catalogue. 1971.