Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

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Making grey wood

It is necessary to take three demi—sestiers of iron filings per 18 deniers of rock alum, and for as much 18 deniers green copperas for six deniers of verdigris, pitch and a quart of currier water; and if you can’t find any, use rainwater [blank] of a slight degree.