Arbor Veneris , or, the Copper Tree. 195 
to the Surface of the Glafs, reprefenting 
Leaves and Flowers* 
.V v l A *,- 
Arbor Veneris, or, the Copper Tree . ■ 
The feeming Vegetation of Silver and 
Iron jlift before deferibed, I give from' 
other Writers; but this of Copper is I 
believe entirely .a new Difcovery : arid I 
can affirm, from my owii Experience, that 
it is extremely wonderful arid pretty, and 
tnade with little Trouble. 
In half an Ounce of Aqua Fortis , let 
ri bright Halfpenny, or fome fmall ^ Piece 
of clean pure Copper remain for about 
twelve Hours, and then take it out, Diffolve 
a little gjuick-Jilver in as fmall a Quantity 
ris you can of the farrie or ftronger Aqua 
Fortis. The Solution will be white, and 
like Flour and Water ; at which Inftant it 
mud be put into the firft Licfuor, which will 
immediately become of a lovely blue, and 
throw down fomething of a white Sediment, 
but have very little Body or Confidence,, 
* Tho’ Aqua Fortis a£ts on the filings of Copper fafter 
than it can oV a Lump of that Metal, I have bv Experience 
found that very fmall Particles of Tron rubbed from the 
File, and mixed with the Copper Filings, do much Pre» 
judice to the Experiment. 
. As Fume' arifing from the Solutions of Metals in Aqua 
For'is , See. are difagreeable and unwholefome, ’tis advifeable 
tP make them in the open Air, and fo placed that the Wind 
may blow the Fumes from you. 
o % 
Ha ye 
