Making and Knowing
A minimal edition of BnF Ms Fr 640

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instead of fine turpentine. And you can put into two lbs of toucommon turpentine one lb of fine turpentine oil & proceed as with the other one. This one will cost you no more than five or six sols per lb & is sold for 40 sols per lb.

Figure Figure

This vessel is used to make large quantities of turpentine oil, that is to say a bucket an hour. And no matter which turpentine it may be, whether fine or coarse. One needs to give, as you know, a little fire at the beginning. And always keep cold water in the cooler on the top. The lb is sold at xii sols, & at the bottom of the vessel remains the colophony, known as pix graeca. Eau de vie are also made well in this vessel and there is no need to distill it again. You do not need a small oven for this coppervessel, but only charcoal around it if it has a flat bottom, but if it is round, you will place it on a trivet.

at left top margin

@ It is better to heat the varnish a little bit, rather than to put it out in the sun, because this makes the panel warp.

at left middle margin

@ Some say it is not good to distil in this copper vessel because it is made green. However, when tinned, it is good.

For varnishing

Turpentine varnish does not need any glue because it is fat and viscous and it is not absorbed in the wood like that of spike lavender and sandarac. Also, that ofspike lavender does not require any glue on iron & similar materials that do not absorb, but on wood and on colors which have do not have gum or colle de destrempe, it is necessary to lay one coat of the said colle de retailles & to let it dry & to varnish.