Take 1 gallon of water, in which are to be dissolved,
1 pound of binacetate of copper (distilled verdigris), and 3
libs. of sulphate of copper.
This solution is to be thickened with
2 libs. of gum senegal, 1 lib. of British gum, and 4 libs. of
pipe-clay; adding afterwards, 2 ounces of nitrate of copper--as
a deliquescent substance.