The New International Encyclopædia/Arbor Dianæ

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The New International Encyclopædia
Arbor Dianæ
Edition of 1905. See also Diana's Tree on Wikipedia, and the disclaimer.

ARBOR DIA'NÆ (Lat., tree of Diana, the alchemic name of silver). An arborescent precipitate of metallic silver from a solution of silver nitrate, produced by the addition of a metallic element such as mercury. The proportions recommended are as follows: Dissolve twenty grains silver nitrate in one fluid ounce of water in a convenient bottle, add one-half dram of pure mercury, suspend a piece of zinc by means of a fine thread secured to the cork, and in a day or two the arborescent appearance will present itself.