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The Iron Tree


Dissolve iron filings in aqua fortis, moderately concentrated, till

the acid is saturated; then add to it gradually, a solution of fixed

alkali, (commonly called oil of tartar per deliquum.) A strong

effervescence will ensue, and the iron, instead of falling to the

bottom of the vessel, will afterwards rise so as to cover the sides,

forming a multitude of ramifications heaped one upon the other, which

will sometimes pass over the edge of the vessel, and extend themselves

on the outside, with all the appearance of a plant.



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