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

- - - - - folio image: 102r - - - - -

Glass vessel

The glass vessel must be either pear—shaped or round pyramid—shaped, of the same thickness as the small back of a knife, round on the bottom without folding over on itself, like flasks, its opening of such a size that a Dutch feathercan just about get in, with a lip at the end, in this way of the height of seven fingers’ width.

Figure at middle bottom margin of folio 102r Figure