Arbor Veneris, or, the Copper 'free. 201 
and pale, with a flight Teint of a pearly Co¬ 
lour, was fuppofed to be only faturated with 
Fin : but on trying Tin with other Aqua For¬ 
th, and making Experiments with Aqua 
Forth prepared by other Scarlet Dyers, we 
found ourfelves difappointed and the Vege¬ 
tation very imperfedt. 
Aqua Forth bought at feveral Shops in 
London, corroded, or rather burnt the Shav¬ 
ings of Fin, with great Fermentation, Heat 
and Violence ; reducing them to a white 
Pafte-like Subfiance, that lay at the Bottom 
and left the Liquor perfectly colourlefs : and 
when the Copper was afterwards put in, 
conduced not at all towards giving the Mix¬ 
ture a Confidence, or promoting the Branch¬ 
ings out; whereas the Fin in Mrs. Colembine s 
Aqua Forth was kept fufpended, threw down 
no Sediment, and thickened the Mixture. 
But as that Aqua Forth can not be got by 
People diftant from Norwich, many Endea¬ 
vours have been ufed to produce the fame 
Effect by other Means: and we luckily found 
it might be done by the Method juft now 
defcribed. We difcovered alfo, in making 
Experiments without Number on this Oc- 
cafion, that different Kinds of Branchings 
equally furprizing and beautiful may be pro-* 
duced by different Mixtures. Viz . 
Aqua Forth faturated with Copper, and 
applied to a Nail, will without any Addi¬ 
tion fhoot forth very pretty Branches, after 
Handing quiet a few Hours, if a due Pro¬ 
portion 
