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Were the things to be analysed, it might transpire that the quantity of verdigris or subacetate on the copper plate had been excessive, so great as to look like deliberate purpose.

It is not precipitated by tannin or subacetate of lead.

Soluble starch is precipitated out of solution by alcohol, or by lead subacetate solution.

They are precipitated out of solution by alcohol and by lead subacetate solution.

Other methods have been suggested for the preliminary purification, e.g., silver oxide, silver carbonate and lead subacetate, and copper sulphate and caustic potash, but the lead subacetate alone with care gives satisfactory results.