be in the same amount as the green, not more; and then rub it on a grindstone real well, and put in a little lead yellow. The more you add to it, the more yellow or leaf color you will get; and if you want to get bast green, add a little dark green to it or take the juice of rue. Also you may stir in a little white tartar and when it is well ground, then temper it with wine or vinegar and a little gum water, not too strong; and let it stand, that it gets quite dry. and wet it again with wine and then use it.

The sap green you shall not grind, not on a stone nor on a glass pane, nor with a finger. Pour a little pure water over it, and let the sap green dissolve gently, and when it gets as thick as an ink, with which it is easy to write, then the sap green is right. You shall put it on with a brush. / red lead

The red lead you shall grind well with egg white or with gum water, and temper it then with pure water but so that it does not get too weak. The red lead tends to get thick after grinding. Let it dry and temper it until it dissolves, and the thicker the better; and then put it on with a brush. / Black

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